connessione (wifi) instabile

[JO_Asimov]

Ormai è da molto che ho questo problema e per pigrizia l'ho aggirato per mesi usando la partizione windows ma finalmente vorrei risolverlo in quanto l'uso di ubuntu mi sarà necessario per i prossimi anni e mesi.
IL PROBLEMA
Il mio metodo di connessione ad internet è soprattutto via wi-fi e succede spesso che dopo aver navigato sul web o dopo qualsiasi operazione che coinvolga download e upload da internet, porti allo "stop" al "freez" della comunicazione. Più semplicemente: dopo qualche minuto di utilizzo della connessione il mio computer si rifiuta e va come in stand-by, i download smettono di andare le richieste di pagine di firefox pure e via dicendo, anche se la connessione alla mia adsl è ancora attiva e la sezione reti di impostazioni riporta connesso alla rete wirless.
Il metodo con cui spesso riesco a risolvere questo problema è disattivando la connessione e riattivandola, ma questo risulta molto scomodo per moltissime ragioni.
Inoltre paragonando la velocità della rete tra i due os sulla mia macchina, non c'è paragone nel definire che windows riesca a sfruttare a pieno la mia banda mentre ubuntu sembra quasi limitato o limitante.
Non so se sia un problema di driver (non penso in quanto la scheda è rilevata) anche se durante l'installazione di ubuntu ho avuto diverse fatiche nel attivare la scheda in quanto mi risultava sempre non riconosciuta problema che si è poi risolto provando un semplice apt-get update e apt-get upgrade tramite connessione lan.
Spero riusciate ad aiutarmi...

[thece]

descrizione molto bella, adesso iniziamo ad attaccarci qualche output. Iniziamo con questi

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lsb_release -a

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uname -a

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sudo lshw -short

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sudo lshw -c network

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lspci -knn | grep -A 2 -i net

[JO_Asimov]

Procedo:


$ lsb_release -a

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No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 16.04.1 LTS
Release:	16.04
Codename:	xenial

$ uname -a

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Linux simone-Inspiron-5748 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

$ sudo lshw -short

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H/W path         Device      Class          Description
=======================================================
                             system         Inspiron 5748 (0653)
/0                           bus            03258F
/0/0                         memory         64KiB BIOS
/0/1                         memory         
/0/1/0                       memory         8GiB SODIMM DDR3 Synchronous 1600 MHz (0,6 ns)
/0/7                         memory         System Memory
/0/6                         memory         4MiB L3 cache
/0/5                         memory         512KiB L2 cache
/0/4                         memory         128KiB L1 cache
/0/24                        processor      Intel(R) Core(TM) i7-4510U CPU @ 2.00GHz
/0/2                         memory         
/0/3                         memory         
/0/100                       bridge         Haswell-ULT DRAM Controller
/0/100/2                     display        Haswell-ULT Integrated Graphics Controller
/0/100/3                     multimedia     Haswell-ULT HD Audio Controller
/0/100/14                    bus            8 Series USB xHCI HC
/0/100/14/0      usb3        bus            xHCI Host Controller
/0/100/14/1      usb2        bus            xHCI Host Controller
/0/100/16                    communication  8 Series HECI #0
/0/100/1b                    multimedia     8 Series HD Audio Controller
/0/100/1c                    bridge         8 Series PCI Express Root Port 1
/0/100/1c.2                  bridge         8 Series PCI Express Root Port 3
/0/100/1c.2/0    wlp6s0      network        BCM43142 802.11b/g/n
/0/100/1c.3                  bridge         8 Series PCI Express Root Port 4
/0/100/1c.3/0    enp7s0      network        RTL8101/2/6E PCI Express Fast/Gigabit Ethernet contro
/0/100/1c.4                  bridge         8 Series PCI Express Root Port 5
/0/100/1c.4/0                display        GM108M [GeForce 840M]
/0/100/1d                    bus            8 Series USB EHCI #1
/0/100/1d/1      usb1        bus            EHCI Host Controller
/0/100/1d/1/1                bus            USB hub
/0/100/1d/1/1/3              input          Microsoft
/0/100/1d/1/1/5              multimedia     Integrated_Webcam_HD
/0/100/1d/1/1/6              generic        BCM43142A0
/0/100/1d/1/1/8              generic        USB2.0-CRW
/0/100/1f                    bridge         8 Series LPC Controller
/0/100/1f.2                  storage        8 Series SATA Controller 1 [AHCI mode]
/0/100/1f.3                  bus            8 Series SMBus Controller
/0/8             scsi0       storage        
/0/8/0.0.0       /dev/sda    disk           1TB WDC WD10JPVX-75J
/0/8/0.0.0/1     /dev/sda1   volume         449MiB Windows NTFS volume
/0/8/0.0.0/2     /dev/sda2   volume         99MiB Windows FAT volume
/0/8/0.0.0/3     /dev/sda3   volume         15MiB reserved partition
/0/8/0.0.0/4     /dev/sda4   volume         559GiB Windows NTFS volume
/0/8/0.0.0/5     /dev/sda5   volume         363GiB EXT4 volume
/0/8/0.0.0/6     /dev/sda6   volume         8094MiB Linux swap volume
/0/9             scsi1       storage        
/0/9/0.0.0       /dev/cdrom  disk           DVD+-RW UJ8E2
/1                           power          DELL 4WY7C49

$ sudo lshw -c network

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  *-network               
       description: Wireless interface
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:06:00.0
       logical name: wlp6s0
       version: 01
       serial: 9c:ad:97:dc:88:e7
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.30.223.248 (r487574) ip=192.168.1.8 latency=0 multicast=yes wireless=IEEE 802.11abg
       resources: irq:18 memory:f7900000-f7907fff
  *-network
       description: Ethernet interface
       product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: enp7s0
       version: 07
       serial: 74:e6:e2:12:84:64
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:41 ioport:e000(size=256) memory:f7800000-f7800fff memory:f2100000-f2103fff

$ lspci -knn | grep -A 2 -i net

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06:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
	Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
	Kernel driver in use: wl
--
07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
	Subsystem: Dell RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [1028:0653]
	Kernel driver in use: r8169
	Kernel modules: r8169

[thece]

Aggiungi questi output

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dmesg | egrep 'wlp6s0|wl|cfg80211|mac80211'

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ifconfig

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sudo iwlist wlp6s0 channels

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sudo iwlist wlp6s0 scan

[JO_Asimov]

dmesg | egrep 'wlp6s0|wl|cfg80211|mac80211'

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[   13.051562] wl 0000:06:00.0: enabling device (0000 -> 0002)
[   13.179580] wlan0: Broadcom BCM4365 802.11 Hybrid Wireless Controller 6.30.223.248 (r487574)
[   13.939408] wl 0000:06:00.0 wlp6s0: renamed from wlan0
[   15.825040] cfg80211: World regulatory domain updated:
[   15.825043] cfg80211:  DFS Master region: unset
[   15.825045] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[   15.825047] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[   15.825049] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[   15.825050] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[   15.825052] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[   15.825054] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[   15.825056] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[   15.825057] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[   15.825058] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[   35.370327] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 1059.312712] Modules linked in: msr rfcomm bbswitch(OE) bnep binfmt_misc nls_iso8859_1 rtsx_usb_ms memstick uvcvideo btusb btrtl btbcm btintel bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core nvidia_uvm(POE) v4l2_common videodev media joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp dell_led coretemp snd_soc_rt5640 snd_soc_rl6231 snd_soc_core kvm_intel dell_laptop dell_wmi snd_hda_codec_realtek snd_hda_codec_hdmi mxm_wmi hid_rmi sparse_keymap kvm snd_compress snd_hda_codec_generic dcdbas ac97_bus snd_hda_intel snd_hda_codec snd_hda_core irqbypass snd_pcm_dmaengine snd_hwdep snd_pcm snd_seq_midi wl(POE) crct10dif_pclmul dell_smm_hwmon snd_seq_midi_event crc32_pclmul ghash_clmulni_intel snd_rawmidi aesni_intel snd_seq aes_x86_64 lrw gf128mul glue_helper cfg80211 ablk_helper
[ 1059.703189] Modules linked in: msr rfcomm bbswitch(OE) bnep binfmt_misc nls_iso8859_1 rtsx_usb_ms memstick uvcvideo btusb btrtl btbcm btintel bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core nvidia_uvm(POE) v4l2_common videodev media joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp dell_led coretemp snd_soc_rt5640 snd_soc_rl6231 snd_soc_core kvm_intel dell_laptop dell_wmi snd_hda_codec_realtek snd_hda_codec_hdmi mxm_wmi hid_rmi sparse_keymap kvm snd_compress snd_hda_codec_generic dcdbas ac97_bus snd_hda_intel snd_hda_codec snd_hda_core irqbypass snd_pcm_dmaengine snd_hwdep snd_pcm snd_seq_midi wl(POE) crct10dif_pclmul dell_smm_hwmon snd_seq_midi_event crc32_pclmul ghash_clmulni_intel snd_rawmidi aesni_intel snd_seq aes_x86_64 lrw gf128mul glue_helper cfg80211 ablk_helper
[ 3131.084180] cfg80211: World regulatory domain updated:
[ 3131.084191] cfg80211:  DFS Master region: unset
[ 3131.084196] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 3131.084205] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 3131.084211] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 3131.084216] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[ 3131.084222] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[ 3131.084229] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[ 3131.084236] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[ 3131.084242] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[ 3131.084248] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[ 3131.365433] cfg80211: World regulatory domain updated:
[ 3131.365437] cfg80211:  DFS Master region: unset
[ 3131.365438] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 3131.365441] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 3131.365443] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 3131.365445] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[ 3131.365447] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[ 3131.365450] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[ 3131.365452] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[ 3131.365453] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[ 3131.365455] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[ 3132.138376] WARNING: CPU: 0 PID: 439 at /build/linux-W6HB68/linux-4.4.0/net/wireless/sme.c:850 cfg80211_roamed+0x86/0xa0 [cfg80211]()
[ 3132.138378] Modules linked in: msr rfcomm bbswitch(OE) bnep binfmt_misc nls_iso8859_1 rtsx_usb_ms memstick uvcvideo btusb btrtl btbcm btintel bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core nvidia_uvm(POE) v4l2_common videodev media joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp dell_led coretemp snd_soc_rt5640 snd_soc_rl6231 snd_soc_core kvm_intel dell_laptop dell_wmi snd_hda_codec_realtek snd_hda_codec_hdmi mxm_wmi hid_rmi sparse_keymap kvm snd_compress snd_hda_codec_generic dcdbas ac97_bus snd_hda_intel snd_hda_codec snd_hda_core irqbypass snd_pcm_dmaengine snd_hwdep snd_pcm snd_seq_midi wl(POE) crct10dif_pclmul dell_smm_hwmon snd_seq_midi_event crc32_pclmul ghash_clmulni_intel snd_rawmidi aesni_intel snd_seq aes_x86_64 lrw gf128mul glue_helper cfg80211 ablk_helper
[ 3132.138424] CPU: 0 PID: 439 Comm: wl_event_handle Tainted: P        W  OE   4.4.0-62-generic #83-Ubuntu
[ 3132.138447]  [<ffffffffc0eb7d16>] cfg80211_roamed+0x86/0xa0 [cfg80211]
[ 3132.138475]  [<ffffffffc1115955>] wl_notify_roaming_status+0xc5/0x140 [wl]
[ 3132.138495]  [<ffffffffc1114fb0>] wl_event_handler+0x60/0x1d0 [wl]
[ 3132.138514]  [<ffffffffc1114f50>] ? wl_notify_scan_status+0x320/0x320 [wl]
[ 8234.291096] cfg80211: World regulatory domain updated:
[ 8234.291099] cfg80211:  DFS Master region: unset
[ 8234.291100] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 8234.291102] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 8234.291103] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 8234.291104] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[ 8234.291105] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[ 8234.291107] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[ 8234.291108] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[ 8234.291109] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[ 8234.291110] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[12453.131203] cfg80211: World regulatory domain updated:
[12453.131207] cfg80211:  DFS Master region: unset
[12453.131209] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[12453.131212] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[12453.131214] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[12453.131216] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[12453.131218] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[12453.131221] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[12453.131223] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[12453.131225] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[12453.131227] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[12455.187684] cfg80211: World regulatory domain updated:
[12455.187687] cfg80211:  DFS Master region: unset
[12455.187689] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[12455.187692] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[12455.187694] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[12455.187696] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[12455.187698] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[12455.187700] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[12455.187702] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[12455.187703] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[12455.187705] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[12455.287699] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[18584.422546] cfg80211: World regulatory domain updated:
[18584.422549] cfg80211:  DFS Master region: unset
[18584.422550] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[18584.422552] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[18584.422553] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[18584.422554] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[18584.422555] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[18584.422557] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[18584.422558] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[18584.422559] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[18584.422560] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)

ifconfig

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enp7s0    Link encap:Ethernet  IndirizzoHW 74:e6:e2:12:84:64  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:1000 
          Byte RX:0 (0.0 B)  Byte TX:0 (0.0 B)

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:33293 errors:0 dropped:0 overruns:0 frame:0
          TX packets:33293 errors:0 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:1 
          Byte RX:2997394 (2.9 MB)  Byte TX:2997394 (2.9 MB)

wlp6s0    Link encap:Ethernet  IndirizzoHW 9c:ad:97:dc:88:e7  
          indirizzo inet:192.168.1.8  Bcast:192.168.1.255  Maschera:255.255.255.0
          indirizzo inet6: fe80::3cc7:bd1c:6c4f:c887/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5194286 errors:0 dropped:0 overruns:0 frame:752574
          TX packets:3595810 errors:68 dropped:0 overruns:0 carrier:0
          collisioni:0 txqueuelen:1000 
          Byte RX:3372074686 (3.3 GB)  Byte TX:315109089 (315.1 MB)
          Interrupt:18 

sudo iwlist wlp6s0 channel

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wlp6s0    32 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Channel 14 : 2.484 GHz
          Channel 36 : 5.18 GHz
          Channel 38 : 5.19 GHz
          Channel 40 : 5.2 GHz
          Channel 42 : 5.21 GHz
          Channel 44 : 5.22 GHz
          Channel 46 : 5.23 GHz
          Channel 48 : 5.24 GHz
          Channel 52 : 5.26 GHz
          Channel 56 : 5.28 GHz
          Channel 60 : 5.3 GHz
          Channel 64 : 5.32 GHz
          Channel 100 : 5.5 GHz
          Channel 104 : 5.52 GHz
          Channel 108 : 5.54 GHz
          Channel 112 : 5.56 GHz
          Channel 116 : 5.58 GHz
          Channel 120 : 5.6 GHz
          Channel 124 : 5.62 GHz
          Current Frequency=2.412 GHz (Channel 1)

sudo iwlist wlp6s0 scan

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wlp6s0    Scan completed :
          Cell 01 - Address: D0:D4:12:B6:CF:2B
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=53/70  Signal level=-57 dBm  
                    Encryption key:on
                    ESSID:"Telecom-45535013"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 4ms ago
                    IE: Unknown: 001054656C65636F6D2D3435353335303133
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 0B0504001C0000
                    IE: Unknown: 2D1A3C1817FFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1601081500000000000000000000000000000000000000
                    IE: Unknown: 7F03000008
                    IE: Unknown: DD8C0050F204104A00011010440001021041000100103B00010310470010DD074EEE57F15DDAAAABB76C5BA19B4310210003414442102300074147574946494E1024000D343634303149303234383438361042000D343634303149303234383438361054000800060013C8040001101100074147574946494E100800020100103C0001011049000600372A000120
                    IE: Unknown: DD090010180204000C0000
                    IE: Unknown: DD180050F2020101040003A4000027A4000042435E0062322F00

[thece]

Proviamo intanto questo:

*) disabilitiamo il protocollo di rete IPv6.
Con un editor di testo in modalità amministratore apri il file /etc/sysctl.conf

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sudo gedit /etc/sysctl.conf

e in fondo al file aggiungi queste righe

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# Disabilito IPv6 globalmente
net.ipv6.conf.all.disable_ipv6=1

salva il file.

*) cambiamo il Regulatory Domain per il WIFI.
Con un editor di testo in modalità amministratore apri il file /etc/default/crda

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sudo gedit /etc/default/crda

modifica la chiave REGDOMAIN così

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REGDOMAIN=EU

salva il file.

Fatte entrambe le modifiche riavvia il PC e controlla se la stabilità della connessione WIFI è migliorata.

[JO_Asimov]

Se con stabilità intendi l'allacciarsi o lo scollegarsi alla rete wifi quello non è mai successo, mentre per quanto riguarda la costanza della linea non è cambiato nulla, solo ora per accedere a questa pagina ho dovuto scollegarmi e ricollegarmi alla rete di nuovo

[thece]

Se con stabilità intendi l'allacciarsi o lo scollegarsi alla rete wifi quello non è mai successo, mentre per quanto riguarda la costanza della linea non è cambiato nulla, solo ora per accedere a questa pagina ho dovuto scollegarmi e ricollegarmi alla rete di nuovo

Con stabilità io intendo la bassa variabilità delle prestazioni del collegamento WIFI nel tempo.

[JO_Asimov]

A ok allora non è cambiato nulla

[thece]

A ok allora non è cambiato nulla

Mi sa che occorre mettere mano al driver. Vedo di farmi venire in mente qualcosa

[EDIT]

Per favore, posta:

- screenshot di: Impostazioni di Sistema > Software e Aggiornamenti > Driver Aggiuntivi

- output del comando

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dpkg -l | egrep -i 'broadcom|bcm|brc|b43'

[JO_Asimov]

Scusa per il ritardo, ecco qua l'output

dpkg -l | egrep -i 'broadcom|bcm|brc|b43'

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ii  bcmwl-kernel-source                           6.30.223.248+bdcom-0ubuntu8                   amd64        Broadcom 802.11 Linux STA wireless driver source