Re: Network problem

The kernel may not be aware that something is wrong. Your email has 
garbled which driver is in use, could you please clarify and also which 
kernel version are you using?

Some steps i suggest are...

- see if traffic is leaving your machine (mirror ports, hubs or a cross 
over to another machine. then use tcpdump or wireshark)
- try unloading and loading the driver, does it work again?
- check what options are available for the driver, and play with any 
you might have
- update your kernel


some more exotic things to check...
- check that iptables isnt being triggered by something?
- it could be an irq conflict, especially if the card (or driver) 
doesnt play nicely with shared irqs. you may be able to clear the share 
by disabling an unused serial or parallel port
- following from the above, you could change to polled rather than irq 
and see what happens. polling uses lots more cpu (ok thats an over 
simplification, it is better in some circumstances)
- maybe your dns lease is expiring?


Dean


On Tue, 27 Dec 2011 12:44:04 +0100, regexes wrote:
> Hello everyone,
>
> I just aquired a new Lenovo G770 laptop and am having a strange issue 
> with
> the Ethernet Controller.
>
> Network connection works fine for a few minutes then dies. The 
> interface
> is still configured though but it just stops working. There are no 
> error
> messages in dmesg either.
>
> My router is not a problem. Access is granted and it does work to 
> begin
> with and the logs show nothing abnormal.
>
> I've seen a few threads concering the G770 with Ubuntu but nothing 
> that
> addresses this problem.
>
> Output of ifconfig -a
>
> eth0      Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx
>                   inet addr:xxx.xxx.xxx.xxx  Bcast:xxx.xxx.xxx.xxx
> Mask:xxx.xxx.xxx.xxx
>                   inet6 addr: xxxx::xxxx:xxxx:xxxx:xxxx/64 Scope:Link
>                   UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>                   RX packets:3983 errors:0 dropped:0 overruns:0 
> frame:0
>                   TX packets:3139 errors:0 dropped:0 overruns:0 
> carrier:1
>                   collisions:0 txqueuelen:1000
>                   RX bytes:4773236 (4.5 MiB)  TX bytes:457213 (446.4 
> KiB)
>                   Interrupt:27
>
>
> The output of lspic -v
> 01:00.0 Ethernet controller: Atheros Communications AR8152 v2.0 Fast
> Ethernet (rev c1)
>                 Subsystem: Lenovo Device 3979
>                 Flags: bus master, fast devsel, latency 0, IRQ 27
>                 Memory at d0500000 (64-bit, non-prefetchable) 
> [size=256K]
>                 I/O ports at 2000 [size=128]
>                 Capabilities: [40] Power Management version 3
>                 Capabilities: [48] MSI: Enable+ Count=1/1 Maskable- 
> 64bit+
>                 Capabilities: [58] Express Endpoint, MSI 00
>                 Capabilities: [6c] Vital Product Data
>                 Capabilities: [100] Advanced Error Reporting
>                 Capabilities: [180] Device Serial Number
> xx-xx-xx-xx-xx-xx-xx-xx
>                 Kernel driver in use: atl101:00.0
>
> Anybody have an idea what could be happening with the Eternet 
> controller
> and how I can fix it?
>
> Another issue are the function keys. On my old Thinkpad, the
> tpb package worked very well, however, that package isn't available 
> on
> amd64. What other possibility is there to get the function keys to 
> work?
>
> Thanks for any help!
> regexes

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