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Old 03-17-10, 05:50 PM   #7
bengershon
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Join Date: Nov 2004
Posts: 15
Default Re: Strange problem after hardware upgrade

I have done some more work. Firstly, here is the /var/log/messages file segment from the point where the problem happened:

Mar 18 00:32:32 linux kernel: ------------[ cut here ]------------
Mar 18 00:32:32 linux kernel: WARNING: at net/sched/sch_generic.c:255 dev_watchdog+0x1b3/0x1c0()
Mar 18 00:32:32 linux kernel: Hardware name: P55-UD5
Mar 18 00:32:32 linux kernel: NETDEV WATCHDOG: eth1 (r8169): transmit queue 0 timed out
Mar 18 00:32:32 linux kernel: ---[ end trace e8bfe80e2f2cdec8 ]---
Mar 18 00:32:32 linux kernel: r8169: eth1: link up
Mar 18 00:32:44 linux kernel: r8169: eth1: link up
Mar 18 00:32:56 linux kernel: r8169: eth1: link up
Mar 18 00:33:08 linux kernel: r8169: eth1: link up
Mar 18 00:33:20 linux kernel: r8169: eth1: link up
Mar 18 00:33:38 linux kernel: r8169: eth1: link up
Mar 18 00:33:45 linux pppd[15941]: No response to 3 echo-requests
Mar 18 00:33:45 linux pppd[15941]: Serial link appears to be disconnected.
Mar 18 00:33:45 linux pppd[15941]: Connect time 22.4 minutes.
Mar 18 00:33:45 linux pppd[15941]: Sent 1661677 bytes, received 9704151 bytes.

Next, the machine itself does not seem to actually slow down, but the keyboard and mouse seem to become very unresponsive indeed. In addition, the network seems to be affected. I am using the r8169 driver for a Realtek 8111d network controller.

/proc/interrupts puts the nvidia card, eth1 and the USB port with the keyboard and mouse onto interrupt 12. Could this be the source of the problem - an interrupt clash? If so, can it be fixed up somehow?

Last edited by bengershon; 03-17-10 at 06:03 PM. Reason: added more information
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