Red Hat Bugzilla – Bug 426478
[wireless] system seems to hang every 3-4 minutes for 4-5 seconds
Last modified: 2009-01-09 00:34:48 EST
Description of problem:
with the new kernels 184.108.40.206-63.fc8 and 220.127.116.11-85.fc8 the system seems to
hang for 4-5 seconds every 3-4 of minutes.
The effect is weird: keyboard input gets repeated (if I'm typing), mouse locks,
sound hangs etc, but after some seconds everything comes back to normality.
I'm pretty sure it is caused by the kernel because with version 18.104.22.168-49.fc8
this doesn't happen (in fact I still use that version because of this bug)
In changelog I noticed this line:
* mar nov 13 2007 Chuck Ebbert <firstname.lastname@example.org> 22.214.171.124-53
- Disable precise CPU time accounting, fixing a divide-by-zero bug.
maybe is this the cause?
if you need more informations please tell me how to get them
Version-Release number of selected component (if applicable):
kernel-126.96.36.199-63.fc8 and kernel-188.8.131.52-85.fc8
What kind of hardware?
And please attach contents of /var/log/dmesg from working kernel and broken one.
Created attachment 292274 [details]
contents of /var/log/dmesg for kernel 184.108.40.206-49.fc8
Created attachment 292275 [details]
contents of /var/log/dmesg for kernel 220.127.116.11-85.fc8
Hello there, sorry for the delay I had to stay away for a while.
It looks like those pauses are due to the wireless card. In fact when I
disable the wireless networking through Network Manager everything seems fine
even on the latest kernels.
Even though I'm not sure this depends on the kernel, I attach here the dmesg for
both kernels anyway.
The hardware is an Acer Aspire 5633WMLi.
this bug is still present in kernel 18.104.22.168-107.fc8
as before if i disable wireless networking everything is fine.
I can verify this problem on a Dell D420 notebook (with running iwl3945 driver).
I'm also still running on 22.214.171.124-49 due to those annoying hangs.
Any other information needed?
hmm im running iwl3945 too... maybe this happens because of that driver?
this bug is still present in 126.96.36.199-115.fc8
Created attachment 294419 [details]
contents of /var/log/dmesg for kernel 188.8.131.52-115.fc8
This is the contents of /var/log/dmesg on kernel 184.108.40.206-115.fc8
This bug seems to be fixed with kernel kernel-220.127.116.11-50.fc8.
My laptop now correctly detects wireless networks without making the system hang
from time to time anymore.
I still haven't tried to log into a wireless network though.
(last not working kernel was kernel-18.104.22.168-34.fc8)
Sorry, on my system those hangs still occur quite often with kernel
kernel-22.214.171.124-50.fc8, sometimes they even end up with a kernel panic (very
often with 3-34.fc8). Additionally I have problems to connect to a wpa-secured
I'm back on ipw3945 now, those hangs exist as well with this old driver but at
least I can use wireless over wpa again and no kernel panics occur.
I think, it's not a wireless problem. As those ugly hangs had driven me crazy I
tried Fedora9 - no change, no logs. After that I tried Ubuntu "hardy" - same
problem but something in the logs:
[ 282.382262] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 1
[ 282.387778] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 4
[ 282.388800] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 1
[ 283.499771] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 1
[ 283.519122] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 5
[ 325.047624] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 1
[ 325.048708] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 1
[ 325.049797] psmouse.c: GlidePoint at isa0060/serio1/input0 lost sync at byte 1
[ 328.436380] psmouse.c: GlidePoint at isa0060/serio1/input0 - driver resynched.
Searching for those messages with Google provided a huge list of problems with a
Synaptic touchpad (builtin on a Dell D420). The solution provided were:
1. adding "i8042.nomux" as kernel parameter in grub's menu.lst
2. adding "options psmouse proto=imps" into modprobe.conf
This solved my problems. As I don't have Fedora on my notebook anymore, can
someone please test whether it fixes the problems there, as well?
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