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ok fatto

provo ad aprire un video?

niente, stesso problema di prima

dimmi esattamente cosa succede quando tenti di aprire un video
non so dove sbattere la testa, perchè a sto punto non è un problema di flash

il video si apre, si caricano a volte 5 a volte fino a 10 secondi poi.. puff! si blocca, appare il circoletto che gira come se stesse caricando ma non carica niente. qualsiasi video, da youtube a vimeo, tutti la stessa cosa..

ciaoe' i primi fino a dieci secondi li vedo in tempo reale, non e' un problema di connessione, (anche perche' scarico file anche grandi senza problemi) e' che poi si blocca.. boh..

da quanto descrivi sembra proprio un problema di connessione
mansa lspci -k

00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)
Subsystem: Acer Incorporated [ALI] Device 0250
00:01.0 PCI bridge: Intel Corporation 4 Series Chipset PCI Express Root Port (rev 03)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:19.0 Ethernet controller: Intel Corporation 82567V-2 Gigabit Network Connection
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: e1000e
Kernel modules: e1000e
00:1a.0 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: uhci_hcd
00:1a.1 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: uhci_hcd
00:1a.2 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: uhci_hcd
00:1a.7 USB controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: ehci_hcd
00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 1
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.1 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 2
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: uhci_hcd
00:1d.1 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: uhci_hcd
00:1d.2 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: uhci_hcd
00:1d.7 USB controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: ehci_hcd
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90)
00:1f.0 ISA bridge: Intel Corporation 82801JIB (ICH10) LPC Interface Controller
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel modules: iTCO_wdt
00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel modules: i2c-i801
01:00.0 VGA compatible controller: NVIDIA Corporation G96 [GeForce GT 120] (rev a1)
Subsystem: PC Partner Limited Device 9640
Kernel driver in use: nvidia
Kernel modules: nvidia_current, nouveau, nvidiafb
02:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6315 Series Firewire Controller
Subsystem: Acer Incorporated [ALI] Device 0250
Kernel driver in use: firewire_ohci
Kernel modules: firewire-ohci
03:00.0 Network controller: Ralink corp. RT2790 Wireless 802.11n 1T/2R PCIe
Subsystem: Lite-On Communications Inc Device 7600
Kernel driver in use: rt2800pci
Kernel modules: rt2800pci

quale driver usi esattamente (che numero) per la nvidia

manda
dmesg | grep "e1000e"

[ 2.961570] e1000e: Intel(R) PRO/1000 Network Driver - 1.5.1-k
[ 2.961573] e1000e: Copyright(c) 1999 - 2011 Intel Corporation.
[ 2.961615] e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
[ 2.961624] e1000e 0000:00:19.0: setting latency timer to 64
[ 2.961718] e1000e 0000:00:19.0: irq 44 for MSI/MSI-X
[ 3.152244] e1000e 0000:00:19.0: eth0: (PCI Express:2.5GT/s:Width x1) 00:1f:16:f5:f8:8f
[ 3.152248] e1000e 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
[ 3.152270] e1000e 0000:00:19.0: eth0: MAC: 7, PHY: 8, PBA No: FFFFFF-0FF
[ 20.016204] e1000e 0000:00:19.0: irq 44 for MSI/MSI-X
[ 20.072062] e1000e 0000:00:19.0: irq 44 for MSI/MSI-X

non basta
manda
dmesg | tail -100

[ 19.293924] cfg80211: 2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 19.293926] cfg80211: Updating information on frequency 2457 MHz for a 20 MHz width channel with regulatory rule:
[ 19.293928] cfg80211: 2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 19.293930] cfg80211: Updating information on frequency 2462 MHz for a 20 MHz width channel with regulatory rule:
[ 19.293933] cfg80211: 2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 19.293935] cfg80211: Updating information on frequency 2467 MHz for a 20 MHz width channel with regulatory rule:
[ 19.293937] cfg80211: 2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 19.293939] cfg80211: Updating information on frequency 2472 MHz for a 20 MHz width channel with regulatory rule:
[ 19.293941] cfg80211: 2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 19.293943] cfg80211: Updating information on frequency 2484 MHz for a 20 MHz width channel with regulatory rule:
[ 19.293946] cfg80211: 2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 19.293948] cfg80211: World regulatory domain updated:
[ 19.293950] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 19.293952] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 19.293955] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 19.293957] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 19.293959] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 19.293961] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 19.390117] nvidia 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 19.390126] nvidia 0000:01:00.0: setting latency timer to 64
[ 19.390131] vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=none:owns=io+mem
[ 19.390364] NVRM: loading NVIDIA UNIX x86 Kernel Module 295.40 Thu Apr 5 21:28:09 PDT 2012
[ 19.497493] EXT4-fs (sda6): re-mounted. Opts: errors=remount-ro
[ 19.759267] init: failsafe main process (788) killed by TERM signal
[ 19.841640] ppdev: user-space parallel port driver
[ 19.863211] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 19.863214] Bluetooth: BNEP filters: protocol multicast
[ 19.868333] Bluetooth: RFCOMM TTY layer initialized
[ 19.868339] Bluetooth: RFCOMM socket layer initialized
[ 19.868340] Bluetooth: RFCOMM ver 1.11
[ 19.887540] type=1400 audit(1355909156.347:5): apparmor="STATUS" operation="profile_load" name="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper" pid=887 comm="apparmor_parser"
[ 19.888435] type=1400 audit(1355909156.351:6): apparmor="STATUS" operation="profile_load" name="/usr/lib/cups/backend/cups-pdf" pid=886 comm="apparmor_parser"
[ 19.889052] type=1400 audit(1355909156.351:7): apparmor="STATUS" operation="profile_load" name="/usr/sbin/cupsd" pid=886 comm="apparmor_parser"
[ 19.891841] type=1400 audit(1355909156.351:8): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/mission-control-5" pid=892 comm="apparmor_parser"
[ 19.892665] type=1400 audit(1355909156.355:9): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/telepathy-*" pid=892 comm="apparmor_parser"
[ 19.893923] type=1400 audit(1355909156.355:10): apparmor="STATUS" operation="profile_replace" name="/usr/lib/cups/backend/cups-pdf" pid=894 comm="apparmor_parser"
[ 19.894419] type=1400 audit(1355909156.355:11): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/cupsd" pid=894 comm="apparmor_parser"
[ 19.979544] init: alsa-restore main process (941) terminated with status 19
[ 20.016204] e1000e 0000:00:19.0: irq 44 for MSI/MSI-X
[ 20.072062] e1000e 0000:00:19.0: irq 44 for MSI/MSI-X
[ 20.072288] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 20.072663] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 20.140459] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 20.140817] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 22.188009] hda-intel: azx_get_response timeout, switching to polling mode: last cmd=0x300f0000
[ 23.180415] wlan0: authenticate with 00:25:53:0c20 (try 1)
[ 23.181910] wlan0: authenticated
[ 23.182534] wlan0: associate with 00:25:53:0c20 (try 1)
[ 23.184618] wlan0: RX AssocResp from 00:25:53:0c20 (capab=0x411 status=0 aid=2)
[ 23.184622] wlan0: associated
[ 23.185023] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 23.192019] hda-intel: No response from codec, disabling MSI: last cmd=0x300f0000
[ 24.196009] hda-intel: Codec #3 probe error; disabling it...
[ 24.239234] hda_codec: ALC888: BIOS auto-probing.
[ 24.247356] input: HDA Intel Line as /devices/pci0000:00/0000:00:1b.0/sound/card0/input4
[ 24.247455] input: HDA Intel Front Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input5
[ 24.247533] input: HDA Intel Rear Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input6
[ 24.247615] input: HDA Intel Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input7
[ 24.247690] input: HDA Intel Line-Out CLFE as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8
[ 24.247774] input: HDA Intel Line-Out Surround as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
[ 24.247848] input: HDA Intel Line-Out Front as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[ 24.437288] vesafb: mode is 1280x800x32, linelength=5120, pages=0
[ 24.437290] vesafb: scrolling: redraw
[ 24.437293] vesafb: Truecolor: size=8:8:8:8, shift=24:16:8:0
[ 24.439698] vesafb: framebuffer at 0xfb000000, mapped to 0xf8900000, using 4032k, total 4032k
[ 24.439900] Console: switching to colour frame buffer device 160x50
[ 24.439925] fb0: VESA VGA frame buffer device
[ 24.456121] init: plymouth-splash main process (1288) terminated with status 1
[ 33.984007] wlan0: no IPv6 routers present
[ 4326.636952] audit_printk_skb: 36 callbacks suppressed
[ 4326.636955] type=1701 audit(1355913463.099:24): auid=4294967295 uid=1000 gid=1000 ses=4294967295 pid=5232 comm="chrome" reason="seccomp" sig=0 syscall=20 ip=0xb355e424 code=0x50001
[ 4330.748636] type=1701 audit(1355913467.211:25): auid=4294967295 uid=1000 gid=1000 ses=4294967295 pid=5320 comm="chrome" reason="seccomp" sig=0 syscall=20 ip=0xb34e9424 code=0x50001
[20974.323782] kjournald starting. Commit interval 5 seconds
[20974.324274] EXT3-fs (sda1): warning: maximal mount count reached, running e2fsck is recommended
[20974.324670] EXT3-fs (sda1): using internal journal
[20974.324675] EXT3-fs (sda1): mounted filesystem with ordered data mode
[25462.084023] usb 2-4: new high-speed USB device number 4 using ehci_hcd
[25462.220501] scsi8 : usb-storage 2-4:1.3
[25462.260467] cdc_acm 2-4:1.0: This device cannot do calls on its own. It is not a modem.
[25462.260567] cdc_acm 2-4:1.0: ttyACM0: USB ACM device
[25462.261361] usbcore: registered new interface driver cdc_acm
[25462.261363] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[25463.221175] scsi 8:0:0:0: Direct-Access SAMSUNG GT-S5830 Card 0100 PQ: 0 ANSI: 2
[25463.222003] sd 8:0:0:0: Attached scsi generic sg5 type 0
[25463.225043] sd 8:0:0:0: [sdd] Attached SCSI removable disk
[25476.912025] usb 1-1: new high-speed USB device number 4 using ehci_hcd
[25477.304222] scsi9 : usb-storage 1-1:1.0
[25478.305963] scsi 9:0:0:0: Direct-Access Generic- SD/MMC 1.00 PQ: 0 ANSI: 0 CCS
[25478.306607] sd 9:0:0:0: Attached scsi generic sg6 type 0
[25478.934698] sd 9:0:0:0: [sde] 15683584 512-byte logical blocks: (8.02 GB/7.47 GiB)
[25478.935441] sd 9:0:0:0: [sde] Write Protect is off
[25478.935445] sd 9:0:0:0: [sde] Mode Sense: 03 00 00 00
[25478.936319] sd 9:0:0:0: [sde] No Caching mode page present
[25478.936323] sd 9:0:0:0: [sde] Assuming drive cache: write through
[25478.939441] sd 9:0:0:0: [sde] No Caching mode page present
[25478.939444] sd 9:0:0:0: [sde] Assuming drive cache: write through
[25478.940256] sde: sde1
[25478.942943] sd 9:0:0:0: [sde] No Caching mode page present
[25478.942947] sd 9:0:0:0: [sde] Assuming drive cache: write through
[25478.942950] sd 9:0:0:0: [sde] Attached SCSI removable disk

Il wifi è associato, posto che tu stia usando questo
tu stai usando
eth0 oppure wlan0 ?
e a che velocità stanno andando
prova la velocitò di connessione
usando per esempio
speedtestnet

usando wifi

velocita' down 3,85 Mbps up 0.21 Mbps

usando wlan0

Non puoi provare con eth0 ?
e rifare il test

con eth0 mi da addirittura meno.. down 2,71 up 0,20.. cmq ho messo il cavo ora per provare, ma non potro' mai usare il cavo, dovro' sempre fare via wifi

bene, ma appena un attimo
prova flash con eth0

eh si.. sembra proprio che funzioni!