3

I am running Ubuntu 10.04 LTS on a Dell PowerEdge T410 and using a wired network connection. Whenever system becomes idle, it looses network connection.

I needed to either logout or restart the machine in order to make network connections work. However, I have another Dell server running 10.04 LTS and it is working fine.

$ lspci 
... ...
01:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
01:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
... ...

$ uname -a
Linux ubuntu-user 2.6.32-34-server #77-Ubuntu SMP Tue Sep 13 20:54:38 UTC 2011 x86_64 GNU/Linux

 $ tail -300 /var/log/kern.log | grep "Nov  4"
Nov  4 12:36:34 ubuntu-user kernel: [161497.534069] npviewer.bin[17951]: segfault at eeb740a4 ip 00000000f5d74c83 sp 00000000ff8d4ed0 error 4 in libflashplayer.so[f58f7000+fc7000]

$ tail -10 /var/log/pm-powersave.log
/usr/lib/pm-utils/power.d/powersave-policy-hda-powerdown false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/95hdparm-apm true:success.
/usr/lib/pm-utils/power.d/anacron true:stop: Unknown instance: 
success.
/usr/lib/pm-utils/power.d/powersave-policy-dirty-writeback true:success.
/usr/lib/pm-utils/power.d/powersave-policy-hda-powerdown true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.

What is the problem and how can I solve it?

4
  • I would check /var/log/kern.log for more information. Seems odd for an interface to drop off the face of the earth without a message in kern.log
    – Mordoc
    Nov 4, 2011 at 22:08
  • Hi, Thank you for the suggestion. Please see the updated question. There is only one error message (for today). Do you think that is the reason? Please let me know.
    – samarasa
    Nov 4, 2011 at 22:18
  • This question appears to be abandoned, if you are experiencing a similar issue please ask a new question with details pertaining to your problem. If you feel this question is not abandoned, please flag the question explaining that. :)
    – jrg
    Feb 3, 2012 at 1:26
  • 1
    You know what, I have exactly the same issue on two different AMD machines. It would periodically loose networking and then come alive again after maybe a few minutes.
    – hookenz
    Feb 9, 2012 at 21:11

1 Answer 1

1

I'll assume that "system becomes idle" means "screensaver activated" or "lid closed", and suggest that the Power Manager is your culprit. Look at /var/log/pm-*.log and man pm-powersave

4
  • If I deactivate the screensave (i.e. blank screensaver), can I overcome the problem.
    – samarasa
    Nov 4, 2011 at 23:25
  • That was a step I took, too. But then I learned about Power Manager, and now I've told Power Manager NOT to mess with my network. That's the knowledge that I hope I've encapsulated in my answer above.
    – waltinator
    Nov 5, 2011 at 15:51
  • I have update my question with pm-powersave.log details. Please let me know if there something wrong. Thanks.
    – samarasa
    Nov 9, 2011 at 21:59
  • I can't tell, from the log fragment you posted. DO NOT post your whole log. Run this command: grep -i -n -B2 fail /var/log/pm-powersave.log. You should be able to read the log file, and see that /usr/lib/pm-utils/power.d/powersave-policy-hda-powerdown false:success. means that it ran the program/script "powersave-policy-hda-powerdown false" and that the result was "success", for each line in the log file, especially the ones that don't have "success". Then read the failing script and decide if it is reasonable for your system. Read man pm-powersave.
    – waltinator
    Nov 13, 2011 at 1:51

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .