problema scheda Wifi Intel 3945ABG

[Geak]

Salve,
vi chiedo aiuto per risolvere questo problema: La mia scheda wifi all'improvviso non è più abilitata, non vede le reti e non si connette (non è lenta o a connessione intermittente, non c'è proprio.) Ho un pc Lenovo 3000 N200 con soltanto Ubuntu. Non sono un'informatico ma un utente affezionato.
Al momento ho solo potuto stabilire che mentre ethernet (che funziona) è gestito da una scheda Broadcom BCM5906M, la Wifi è gestita da una Intel 3945ABG.
Adesso procedo a riportare i risultati che mi da xterm seguendo questa pagina-guida cui mi hanno rimandato

[Geak]

lsb_release -a

Codice: Seleziona tutto

 utente@utente-3000-N200:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04.3 LTS
Release:        14.04
Codename:       trusty]

uname -a

Codice: Seleziona tutto

utente@utente-3000-N200:~$ uname -a
Linux utente-3000-N200 3.13.0-67-generic #110-Ubuntu SMP Fri Oct 23 13:24:41 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

sudo lshw -c network

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 utente@utente-3000-N200:~$ sudo lshw -c network
[sudo] password for utente: 
  *-network DISABLED      
       description: Wireless interface
       product: PRO/Wireless 3945ABG [Golan] Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlan0
       version: 02
       serial: 00:1f:3c:37:89:08
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwl3945 driverversion=3.13.0-67-generic firmware=15.32.2.9 latency=0 link=no multicast=yes wireless=IEEE 802.11abg
       resources: irq:47 memory:f8000000-f8000fff
  *-network
       description: Ethernet interface
       product: NetLink BCM5906M Fast Ethernet PCI Express
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:06:00.0
       logical name: eth0
       version: 02
       serial: 00:1e:ec:09:d1:a6
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.134 duplex=full firmware=sb v3.03 ip=192.168.1.128 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:48 memory:c8000000-c800ffff

lspci -knn | grep -A 2 -i net

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 utente@utente-3000-N200:~$ lspci -knn | grep -A 2 -i net
04:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4227] (rev 02)
        Subsystem: Intel Corporation ThinkPad T60/R60e/X60s [8086:1011]
        Kernel driver in use: iwl3945
06:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM5906M Fast Ethernet PCI Express [14e4:1713] (rev 02)
        Subsystem: Lenovo Device [17aa:3861]
        Kernel driver in use: tg3 

lspci -vvnn | grep -i net

Codice: Seleziona tutto

  utente@utente-3000-N200:~$ lspci -vvnn | grep -i net
04:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection [8086:4227] (rev 02)
06:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM5906M Fast Ethernet PCI Express [14e4:1713] (rev 02)

lsusb

Codice: Seleziona tutto

utente@utente-3000-N200:~$ lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 002: ID 04d9:a01c Holtek Semiconductor, Inc. 
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 08ff:2580 AuthenTec, Inc. AES2501 Fingerprint Sensor
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

cat /etc/NetworkManager/NetworkManager.conf

Codice: Seleziona tutto

utente@utente-3000-N200:~$ cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false  

cat /var/lib/NetworkManager/NetworkManager.state

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utente@utente-3000-N200:~$ cat /var/lib/NetworkManager/NetworkManager.state
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
  

ls -l /etc/NetworkManager/system-connections

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utente@utente-3000-N200:~$ ls -l /etc/NetworkManager/system-connections
totale 24
-rw------- 1 root root 308 mag 12  2015 ASSISTENZA
-rw------- 1 root root 331 mag 12  2015 ASSISTENZA 1
-rw------- 1 root root 331 mag 12  2015 ASSISTENZA 2
-rw------- 1 root root 403 nov  3 20:49 FASTWEB-1-0021965C2AA0
-rw------- 1 root root 203 set  2 14:55 idem
-rw------- 1 root root 215 set  2 15:01 unito-wifi
  

sudo cat /etc/NetworkManager/system-connections/*

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 utente@utente-3000-N200:~$ sudo cat /etc/NetworkManager/system-connections/*
[sudo] password for utente: 
[connection]
id=ASSISTENZA
uuid=f419a9ea-b4b0-4f5a-960d-054f87d153d8
type=802-11-wireless

[802-11-wireless]
ssid=ASSISTENZA
mode=infrastructure
mac-address=00:1F:3C:37:89:08
security=802-11-wireless-security

[802-11-wireless-security]
key-mgmt=wpa-psk
auth-alg=open

[ipv4]
method=auto

[ipv6]
method=auto
[connection]
id=ASSISTENZA 1
uuid=cb792e1c-01c1-4dcc-a241-35194dbb0fc0
type=802-11-wireless

[802-11-wireless]
ssid=ASSISTENZA
mode=infrastructure
mac-address=00:1F:3C:37:89:08
security=802-11-wireless-security

[802-11-wireless-security]
key-mgmt=wpa-psk
auth-alg=open
psk=*********

[ipv4]
method=auto

[ipv6]
method=auto
[connection]
id=ASSISTENZA 2
uuid=712758ac-c88d-4318-b60d-90ee72267595
type=802-11-wireless

[802-11-wireless-security]
key-mgmt=wpa-psk
auth-alg=open
psk=*********

[802-11-wireless]
ssid=ASSISTENZA
mode=infrastructure
mac-address=00:1F:3C:37:89:08
security=802-11-wireless-security

 [ipv4]
method=auto

[ipv6]
method=auto
[connection]
id=FASTWEB-1-0021965C2AA0
uuid=0efc6048-bfda-4bd4-b224-003241b786f8
type=802-11-wireless
timestamp=1446500123

[802-11-wireless]
ssid=FASTWEB-1-0021965C2AA0
mode=infrastructure
mac-address=00:1F:3C:37:89:08
seen-bssids=00:21:96:5C:2A:A8;00:21:96:6B:4D:D0;
security=802-11-wireless-security

[802-11-wireless-security]
key-mgmt=wpa-psk
psk=*********

[ipv4]
method=auto

[ipv6]
method=auto
[connection]
id=idem
uuid=712368a4-0039-47b4-bc26-c1645ed44656
type=802-11-wireless

[802-11-wireless]
ssid=idem
mode=infrastructure
mac-address=00:1F:3C:37:89:08

[ipv6]
method=auto

[ipv4]
method=auto
[connection]
id=unito-wifi
uuid=e5739f48-2c51-496b-9b97-80d5f2db523c
type=802-11-wireless

[802-11-wireless]
ssid=unito-wifi
mode=infrastructure
mac-address=00:1F:3C:37:89:08

[ipv6]
method=auto

[ipv4]
method=auto

nmcli device status

Codice: Seleziona tutto

utente@utente-3000-N200:~$ nmcli device status
DEVICE     TIPO              STATO        
eth0       802-3-ethernet    collegato    
wlan0      802-11-wireless   non disponibile
  

sudo nmcli device show (qui dice Errore: il comando «dev» «show» non è valido.)

Codice: Seleziona tutto

 utente@utente-3000-N200:~$ nmcli device status
DEVICE     TIPO              STATO        
eth0       802-3-ethernet    collegato    
wlan0      802-11-wireless   non disponibile
utente@utente-3000-N200:~$ sudo nmcli device show
Usage: nmcli device { COMMAND | help }

  COMMAND := { status | list | disconnect | wifi }

  status
  list [iface <iface>]
  disconnect iface <iface> [--nowait] [--timeout <timeout>]
  wifi [list [iface <iface>] [bssid <BSSID>]]
  wifi connect <(B)SSID> [password <password>] [wep-key-type key|phrase] [iface <iface>] [bssid <BSSID>] [name <name>]
               [--private] [--nowait] [--timeout <timeout>]

Errore: il comando «dev» «show» non è valido. 

sudo nmcli device show wlan0

Codice: Seleziona tutto

 utente@utente-3000-N200:~$ sudo nmcli device show wlan0
Usage: nmcli device { COMMAND | help }

  COMMAND := { status | list | disconnect | wifi }

  status
  list [iface <iface>]
  disconnect iface <iface> [--nowait] [--timeout <timeout>]
  wifi [list [iface <iface>] [bssid <BSSID>]]
  wifi connect <(B)SSID> [password <password>] [wep-key-type key|phrase] [iface <iface>] [bssid <BSSID>] [name <name>]
               [--private] [--nowait] [--timeout <timeout>]

Errore: il comando «dev» «show» non è valido.

  

sudo nmcli device list iface wlan0

Codice: Seleziona tutto

    utente@utente-3000-N200:~$ sudo nmcli device list iface wlan0
GENERAL.DEVICE:                         wlan0
GENERAL.TIPO:                           802-11-wireless
GENERAL.VENDOR:                         Intel Corporation
GENERAL.PRODOTTO:                       ThinkPad R60e/X60s
GENERAL.DRIVER:                         iwl3945
GENERAL.VERSIONE-DRIVER:                3.13.0-67-generic
GENERAL.VERSIONE-FIRMWARE:              N/A
GENERAL.HWADDR:                         00:1F:3C:37:89:08
GENERAL.STATO:                          20 (non disponibile)
GENERAL.MOTIVO:                         2 (Il dispositivo è ora gestito)
GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1c.1/0000:04:00.0/net/wlan0
GENERAL.IP-IFACE:                       
GENERAL.NM-MANAGED:                     sì
GENERAL.CONN-AUTOMATICA:                sì
GENERAL.FIRMWARE-MANCANTE:              no
GENERAL.CONNESSIONE:                    non collegato
CAPABILITIES.RILEVAMENTO-PORTANTE:      no
CAPABILITIES.VELOCITÀ:                 sconosciuto
CONNECTIONS.PERC-CONNESSIONI-DISPONIBILI:
WIFI-PROPERTIES.WEP:                    sì
WIFI-PROPERTIES.WPA:                    sì
WIFI-PROPERTIES.WPA2:                   sì
WIFI-PROPERTIES.TKIP:                   sì
WIFI-PROPERTIES.CCMP:                   sì
WIFI-PROPERTIES.AP:                     no
WIFI-PROPERTIES.ADHOC:                  sì

  

cat /etc/network/interfaces

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utente@utente-3000-N200:~$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback  

ifconfig

Codice: Seleziona tutto

 utente@utente-3000-N200:~$ ifconfig
eth0      Link encap:Ethernet  IndirizzoHW 00:1e:ec:09:d1:a6  
          indirizzo inet:192.168.1.128  Bcast:192.168.1.255  Maschera:255.255.255.0
          indirizzo inet6: fe80::21e:ecff:fe09:d1a6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:337809 errors:0 dropped:0 overruns:0 frame:0
          TX packets:205980 errors:0 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:1000 
          Byte RX:455847683 (455.8 MB)  Byte TX:23439918 (23.4 MB)
          Interrupt:19 

lo        Link encap:Loopback locale  
          indirizzo inet:127.0.0.1  Maschera:255.0.0.0
          indirizzo inet6: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:11357 errors:0 dropped:0 overruns:0 frame:0
          TX packets:11357 errors:0 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:0 
          Byte RX:1710607 (1.7 MB)  Byte TX:1710607 (1.7 MB)
 

ethtool eth0

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utente@utente-3000-N200:~$ ethtool eth0
Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
        Advertised pause frame use: Symmetric
        Advertised auto-negotiation: Yes
        Link partner advertised link modes:  10baseT/Half 10baseT/Full 
                                             100baseT/Half 100baseT/Full 
        Link partner advertised pause frame use: Symmetric
        Link partner advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 1
        Transceiver: internal
        Auto-negotiation: on
        MDI-X: off
Cannot get wake-on-lan settings: Operation not permitted
        Current message level: 0x000000ff (255)
                               drv probe link timer ifdown ifup rx_err tx_err
        Link detected: yes
  

iwconfig

Codice: Seleziona tutto

 utente@utente-3000-N200:~$ iwconfig
eth0      no wireless extensions.

lo        no wireless extensions.

wlan0     IEEE 802.11abg  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
 

rfkill list all

Codice: Seleziona tutto

 utente@utente-3000-N200:~$ rfkill list all
0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: yes 

cat /etc/resolv.conf

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 utente@utente-3000-N200:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1
search fastwebnet.it
 

route -n

Codice: Seleziona tutto

 utente@utente-3000-N200:~$ route -n
Tabella di routing IP del kernel
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0        192.168.1.254         0.0.0.0         UG    0      0        0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U     1      0        0 eth0
 

ping -c 5 192.168.1.254

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 utente@utente-3000-N200:~$ ping -c 5 192.168.1.254 
PING 192.168.1.254 (192.168.1.254) 56(84) bytes of data.
64 bytes from 192.168.1.254: icmp_seq=1 ttl=64 time=0.688 ms
64 bytes from 192.168.1.254: icmp_seq=2 ttl=64 time=0.603 ms
64 bytes from 192.168.1.254: icmp_seq=3 ttl=64 time=0.618 ms
64 bytes from 192.168.1.254: icmp_seq=4 ttl=64 time=0.630 ms
64 bytes from 192.168.1.254: icmp_seq=5 ttl=64 time=0.642 ms

--- 192.168.1.254 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3998ms
rtt min/avg/max/mdev = 0.603/0.636/0.688/0.033 ms
 

ping -c 5 8.8.8.8

Codice: Seleziona tutto

utente@utente-3000-N200:~$ ping -c 5 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=52 time=6.01 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=52 time=4.85 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=52 time=5.63 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=52 time=5.81 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=52 time=4.86 ms

--- 8.8.8.8 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 4.854/5.435/6.012/0.493 ms  

ping -c 5 google.it

Codice: Seleziona tutto

 utente@utente-3000-N200:~$ ping -c 5 google.it
PING google.it (216.58.210.195) 56(84) bytes of data.
64 bytes from mrs04s09-in-f3.1e100.net (216.58.210.195): icmp_seq=1 ttl=50 time=11.4 ms
64 bytes from mrs04s09-in-f3.1e100.net (216.58.210.195): icmp_seq=2 ttl=50 time=12.2 ms
64 bytes from mrs04s09-in-f3.1e100.net (216.58.210.195): icmp_seq=3 ttl=50 time=11.4 ms
64 bytes from mrs04s09-in-f3.1e100.net (216.58.210.195): icmp_seq=4 ttl=50 time=12.3 ms
64 bytes from mrs04s09-in-f3.1e100.net (216.58.210.195): icmp_seq=5 ttl=50 time=12.2 ms

--- google.it ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4005ms
rtt min/avg/max/mdev = 11.406/11.966/12.370/0.435 ms 

iw list

Codice: Seleziona tutto

            utente@utente-3000-N200:~$ iw list
Wiphy phy0
        Band 1:
                Frequencies:
                        * 2412 MHz [1] (15.0 dBm)
                        * 2417 MHz [2] (15.0 dBm)
                        * 2422 MHz [3] (15.0 dBm)
                        * 2427 MHz [4] (15.0 dBm)
                        * 2432 MHz [5] (15.0 dBm)
                        * 2437 MHz [6] (15.0 dBm)
                        * 2442 MHz [7] (15.0 dBm)
                        * 2447 MHz [8] (15.0 dBm)
                        * 2452 MHz [9] (15.0 dBm)
                        * 2457 MHz [10] (15.0 dBm)
                        * 2462 MHz [11] (15.0 dBm)
                        * 2467 MHz [12] (15.0 dBm) (passive scanning, no IBSS)
                        * 2472 MHz [13] (15.0 dBm) (passive scanning, no IBSS)
                Bitrates (non-HT):
                        * 1.0 Mbps
                        * 2.0 Mbps (short preamble supported)
                        * 5.5 Mbps (short preamble supported)
                        * 11.0 Mbps (short preamble supported)
                        * 6.0 Mbps
                        * 9.0 Mbps
                        * 12.0 Mbps
                        * 18.0 Mbps
                        * 24.0 Mbps
                        * 36.0 Mbps
                        * 48.0 Mbps
                        * 54.0 Mbps
Band 2:
                Frequencies:
                        * 5170 MHz [34] (15.0 dBm) (passive scanning, no IBSS)
                        * 5180 MHz [36] (15.0 dBm)
                        * 5190 MHz [38] (15.0 dBm) (passive scanning, no IBSS)
                        * 5200 MHz [40] (15.0 dBm)
                        * 5210 MHz [42] (15.0 dBm) (passive scanning, no IBSS)
                        * 5220 MHz [44] (15.0 dBm)
                        * 5230 MHz [46] (15.0 dBm) (passive scanning, no IBSS)
                        * 5240 MHz [48] (15.0 dBm)
                        * 5260 MHz [52] (15.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5280 MHz [56] (15.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5300 MHz [60] (15.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5320 MHz [64] (15.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5500 MHz [100] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5520 MHz [104] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5540 MHz [108] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5560 MHz [112] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5580 MHz [116] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5600 MHz [120] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5620 MHz [124] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5640 MHz [128] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5660 MHz [132] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5680 MHz [136] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5700 MHz [140] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                Bitrates (non-HT):
                        * 6.0 Mbps
                        * 9.0 Mbps
                        * 12.0 Mbps
                        * 18.0 Mbps
                        * 24.0 Mbps
                        * 36.0 Mbps
                        * 48.0 Mbps
                        * 54.0 Mbps
        max # scan SSIDs: 4
        max scan IEs length: 2285 bytes
        Coverage class: 0 (up to 0m)
        Supported Ciphers:
                * WEP40 (00-0f-ac:1)
                * WEP104 (00-0f-ac:5)
                * TKIP (00-0f-ac:2)
                * CCMP (00-0f-ac:4)
        Available Antennas: TX 0 RX 0
        Supported interface modes:
                 * IBSS
                 * managed
                 * monitor
        software interface modes (can always be added):
                 * monitor
        interface combinations are not supported
        Supported commands:
                 * new_interface
                 * set_interface
                 * new_key
                 * new_beacon
                 * new_station
                 * new_mpath
                 * set_mesh_params
                 * set_bss
                 * authenticate
                 * associate
                 * deauthenticate
                 * disassociate
                 * join_ibss
                 * join_mesh
                 * set_tx_bitrate_mask
                 * action
                 * frame_wait_cancel
                 * set_wiphy_netns
                 * set_channel
                 * set_wds_peer
                 * Unknown command (84)
                 * Unknown command (87)
                 * Unknown command (85)
                 * Unknown command (89)
                 * Unknown command (92)
                 * connect
                 * disconnect
        Supported TX frame types:
                 * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * Unknown mode (10): 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
        Supported RX frame types:
                 * IBSS: 0x40 0xb0 0xc0 0xd0
                 * managed: 0x40 0xd0
                 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * mesh point: 0xb0 0xc0 0xd0
                 * P2P-client: 0x40 0xd0
                 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * Unknown mode (10): 0x40 0xd0
        Device supports RSN-IBSS.
        HT Capability overrides:
                 * MCS: ff ff ff ff ff ff ff ff ff ff
                 * maximum A-MSDU length
                 * supported channel width
                 * short GI for 40 MHz
                 * max A-MPDU length exponent
                 * min MPDU start spacing
        Device supports TX status socket option.
        Device supports HT-IBSS.
 

iw phy phy0 info

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           utente@utente-3000-N200:~$ iw phy phy0 info
Wiphy phy0
        Band 1:
                Frequencies:
                        * 2412 MHz [1] (15.0 dBm)
                        * 2417 MHz [2] (15.0 dBm)
                        * 2422 MHz [3] (15.0 dBm)
                        * 2427 MHz [4] (15.0 dBm)
                        * 2432 MHz [5] (15.0 dBm)
                        * 2437 MHz [6] (15.0 dBm)
                        * 2442 MHz [7] (15.0 dBm)
                        * 2447 MHz [8] (15.0 dBm)
                        * 2452 MHz [9] (15.0 dBm)
                        * 2457 MHz [10] (15.0 dBm)
                        * 2462 MHz [11] (15.0 dBm)
                        * 2467 MHz [12] (15.0 dBm) (passive scanning, no IBSS)
                        * 2472 MHz [13] (15.0 dBm) (passive scanning, no IBSS)
                Bitrates (non-HT):
                        * 1.0 Mbps
                        * 2.0 Mbps (short preamble supported)
                        * 5.5 Mbps (short preamble supported)
                        * 11.0 Mbps (short preamble supported)
                        * 6.0 Mbps
                        * 9.0 Mbps
                        * 12.0 Mbps
                        * 18.0 Mbps
                        * 24.0 Mbps
                        * 36.0 Mbps
                        * 48.0 Mbps
                        * 54.0 Mbps 
  Band 2:
                Frequencies:
                        * 5170 MHz [34] (15.0 dBm) (passive scanning, no IBSS)
                        * 5180 MHz [36] (15.0 dBm)
                        * 5190 MHz [38] (15.0 dBm) (passive scanning, no IBSS)
                        * 5200 MHz [40] (15.0 dBm)
                        * 5210 MHz [42] (15.0 dBm) (passive scanning, no IBSS)
                        * 5220 MHz [44] (15.0 dBm)
                        * 5230 MHz [46] (15.0 dBm) (passive scanning, no IBSS)
                        * 5240 MHz [48] (15.0 dBm)
                        * 5260 MHz [52] (15.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5280 MHz [56] (15.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5300 MHz [60] (15.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5320 MHz [64] (15.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5500 MHz [100] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5520 MHz [104] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5540 MHz [108] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5560 MHz [112] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5580 MHz [116] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5600 MHz [120] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5620 MHz [124] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5640 MHz [128] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5660 MHz [132] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5680 MHz [136] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                        * 5700 MHz [140] (16.0 dBm) (passive scanning, no IBSS, radar detection)
                Bitrates (non-HT):
                        * 6.0 Mbps
                        * 9.0 Mbps
                        * 12.0 Mbps
                        * 18.0 Mbps
                        * 24.0 Mbps
                        * 36.0 Mbps
                        * 48.0 Mbps
                        * 54.0 Mbps
        max # scan SSIDs: 4
        max scan IEs length: 2285 bytes
        Coverage class: 0 (up to 0m)
        Supported Ciphers:
                * WEP40 (00-0f-ac:1)
                * WEP104 (00-0f-ac:5)
                * TKIP (00-0f-ac:2)
                * CCMP (00-0f-ac:4)
        Available Antennas: TX 0 RX 0
        Supported interface modes:
                 * IBSS
                 * managed
                 * monitor
        software interface modes (can always be added):
                 * monitor
        interface combinations are not supported
  Supported commands:
                 * new_interface
                 * set_interface
                 * new_key
                 * new_beacon
                 * new_station
                 * new_mpath
                 * set_mesh_params
                 * set_bss
                 * authenticate
                 * associate
                 * deauthenticate
                 * disassociate
                 * join_ibss
                 * join_mesh
                 * set_tx_bitrate_mask
                 * action
                 * frame_wait_cancel
                 * set_wiphy_netns
                 * set_channel
                 * set_wds_peer
                 * Unknown command (84)
                 * Unknown command (87)
                 * Unknown command (85)
                 * Unknown command (89)
                 * Unknown command (92)
                 * connect
                 * disconnect
        Supported TX frame types:
                 * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * Unknown mode (10): 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
        Supported RX frame types:
                 * IBSS: 0x40 0xb0 0xc0 0xd0
                 * managed: 0x40 0xd0
                 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * mesh point: 0xb0 0xc0 0xd0
                 * P2P-client: 0x40 0xd0
                 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * Unknown mode (10): 0x40 0xd0
        Device supports RSN-IBSS.
        HT Capability overrides:
                 * MCS: ff ff ff ff ff ff ff ff ff ff
                 * maximum A-MSDU length
                 * supported channel width
                 * short GI for 40 MHz
                 * max A-MPDU length exponent
                 * min MPDU start spacing
        Device supports TX status socket option.
        Device supports HT-IBSS.

  

sudo iwlist wlan0 scan | grep -i ssid

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 utente@utente-3000-N200:~$ sudo iwlist wlan0 scan | grep -i ssid
[sudo] password for utente: 
wlan0     Interface doesn't support scanning : Network is down
 

sudo iw wlan0 scan | grep -i ssid

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utente@utente-3000-N200:~$ sudo iw wlan0 scan | grep -i ssid
command failed: Network is down (-100)
  

[thece]

mi dici esattamente tutto quello che hai fatto o provato a fare dopo che hai scritto questo (LINK) ?

Nell'immediato prova a riabilitare manualmente la scheda di rete WIFI e vedere se si riprende

Codice: Seleziona tutto

sudo ifconfig wlan0 up

questo prova a riattivare la scheda WIFI

Codice: Seleziona tutto

sudo lshw -c network

Codice: Seleziona tutto

ifconfig

Codice: Seleziona tutto

rfkill list all

questi sono di controllo

Codice: Seleziona tutto

sudo iwlist wlan0 scan | grep -i ssid

questo prova a cercare le reti WIFI

[magozurlinux]

Posta anche questo comando:

Codice: Seleziona tutto

dmesg | grep iwl3945

[Itapop]

Come già scritto su questo forum, con la tua scheda wifi il Network-manager è inaffidabile. Devi installare WICD (anche attraverso Synaptic = Gestione pacchetti, che trovi digitando le parole su Unity, prima icona del menù) e disinstallare Network-manager (sempre con Gestione pacchetti se non vuoi dare comandi su terminale).
Per tutti gli interessati, comunque, nell'ultima versione di Ubuntu 15.1 il Network manager funziona finalmente anche con la scheda ABG3945. E' una buona cosa perchè WICD non viene più aggiornato.

[Geak]

Ok, dopo quel post ho cercato sul forum altre soluzioni per il driver Intel. Qui http://forum.ubuntu-it.org/viewtopic.ph ... l#p4733688 avevo iniziato a seguire la procedura ma alcune risposte del mio terminale erano diverse da quelle riportate dall'utente che aveva aperto il thread e infine mi mancavano le conoscenze per eseguire la soluzione che lì suggeriva Itapop.

Digitando sudo iwconfig wlan0 up rimanda

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utente@utente-3000-N200:~$ sudo ifconfig wlan0 up
[sudo] password for utente: 
SIOCSIFFLAGS: Nessun device corrisponde

Digitando sudo lshw -c network

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utente@utente-3000-N200:~$ sudo lshw -c network
  *-network DISABLED      
       description: Wireless interface
       product: PRO/Wireless 3945ABG [Golan] Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlan0
       version: 02
       serial: 00:1f:3c:37:89:08
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwl3945 driverversion=3.13.0-69-generic firmware=15.32.2.9 latency=0 link=no multicast=yes wireless=IEEE 802.11abg
       resources: irq:47 memory:f8000000-f8000fff
  *-network
       description: Ethernet interface
       product: NetLink BCM5906M Fast Ethernet PCI Express
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:06:00.0
       logical name: eth0
       version: 02
       serial: 00:1e:ec:09:d1:a6
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.134 duplex=full firmware=sb v3.03 ip=192.168.1.131 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:48 memory:c8000000-c800ffff

ifconfig

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utente@utente-3000-N200:~$ ifconfig
eth0      Link encap:Ethernet  IndirizzoHW 00:1e:ec:09:d1:a6  
          indirizzo inet:192.168.1.131  Bcast:192.168.1.255  Maschera:255.255.255.0
          indirizzo inet6: fe80::21e:ecff:fe09:d1a6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:57148 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40300 errors:0 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:1000 
          Byte RX:65332002 (65.3 MB)  Byte TX:5011056 (5.0 MB)
          Interrupt:19 

lo        Link encap:Loopback locale  
          indirizzo inet:127.0.0.1  Maschera:255.0.0.0
          indirizzo inet6: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:5945 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5945 errors:0 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:0 
          Byte RX:895159 (895.1 KB)  Byte TX:895159 (895.1 KB)


eth0      Link encap:Ethernet  IndirizzoHW 00:1e:ec:09:d1:a6  
          indirizzo inet:192.168.1.131  Bcast:192.168.1.255  Maschera:255.255.255.0
          indirizzo inet6: fe80::21e:ecff:fe09:d1a6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:57148 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40300 errors:0 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:1000 
          Byte RX:65332002 (65.3 MB)  Byte TX:5011056 (5.0 MB)
          Interrupt:19 

lo        Link encap:Loopback locale  
          indirizzo inet:127.0.0.1  Maschera:255.0.0.0
          indirizzo inet6: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:5945 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5945 errors:0 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:0 
          Byte RX:895159 (895.1 KB)  Byte TX:895159 (895.1 KB)

rfkill list all

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utente@utente-3000-N200:~$ rfkill list all
0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no

sudo iwlist wlan0 scan | grep -i ssid

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utente@utente-3000-N200:~$ sudo iwlist wlan0 scan | grep -i ssid
wlan0     Interface doesn't support scanning : Network is down

dmesg | grep iwl3945 riporta una sequenza infinita di:

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[ 3782.625271] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.626674] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.626903] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.628328] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.628575] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.629930] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.630155] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.632870] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.633122] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.634525] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.634754] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.636232] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.636464] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.638259] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.638573] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.640455] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.640813] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.642485] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch
[ 3782.642877] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch

Ho installato Synaptic tramite Ubuntu Software Center, stranamente se digito 'wireless network manager' non risulta nessun pacchetto selezionato.
Se invece cerco soltanto 'network manager' risulta un libproxy-1-plugin-netowrk management library, poi un network management framework pptp, network-manager-gnome, network-manager framework ma niente di tutto questo indica il wireless come destinatario.
Possibile che non sia installato un manager per il wireless?!
(Sottolineo che quando il problema si è verificato io non avevo effettuato nessun aggiornamento e tutto andava perfettamente)
Ancora grazie,
g. c.

[magozurlinux]

dmesg | grep iwl3945

[ 3782.625271] iwl3945 0000:04:00.0: Radio disabled by HW RF Kill switch

Hai qualche tasto o sequenza di tasti per attivare/disattivare il wireless?

Da terminale dai questo comando:

Codice: Seleziona tutto

sudo rfkill unblock all

Da terminale postami questi comandi:

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dpkg -l | grep network-manager

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rfkill list

[Geak]

Scusate sono giorni un po' pieni. Ho lanciato il primo comando. Non ha rimandato nulla.
No, non usavo nessuna shortcut per abilitare il wireless.
Posso dire però che un'altra particolarità è che "Abilita funzionalità di rete" è sempre abilitato e selezionato, mentre "Abilita funzionalità Wifi" è disabilitato (e quindi deselezionato) ma a volte senza motivo quando avvio il computer si abilita miracolosamente (ma non vede le reti).

Ripeto, sono solo un utente, ma eviterei di rovinare anche la connessione ethernet che invece funziona. Disinstallando network manager e installando WICD farò qualcosa che potrebbe intaccare la connessione via cavo?

Riporto i risultati degli altri comandi:

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utente@utente-3000-N200:~$ dpkg -l | grep network-manager
ii  network-manager                                       0.9.8.8-0ubuntu7.1                                  amd64        network management framework (daemon and userspace tools)
ii  network-manager-gnome                                 0.9.8.8-0ubuntu4.4                                  amd64        network management framework (GNOME frontend)
ii  network-manager-pptp                                  0.9.8.2-1ubuntu2                                    amd64        network management framework (PPTP plugin core)
ii  network-manager-pptp-gnome                            0.9.8.2-1ubuntu2                                    amd64        network management framework (PPTP plugin GNOME GUI)
  

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utente@utente-3000-N200:~$ rfkill list
0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: yes  

Grazie ancora, attendo risposta.
g. c.