F14: high temperatures after coming back from hibernate
Ranjan Maitra
maitra at iastate.edu
Tue Nov 9 03:22:41 UTC 2010
On Fri, 5 Nov 2010 18:55:19 -0500 Gordon Messmer <yinyang at eburg.com>
wrote:
> On 11/04/2010 05:40 AM, Ranjan Maitra wrote:
> > I have noticed a strange problem after I come back from hibernate and
> > upgrade in F14 on my Thinkpad T61. The temperatures are off the charts,
> > hitting as high as 95C, and staying there, soon after waking up. The
> > laptop has become unusable, basically. Here is the output of top: the
> > topmost processes. Note that the laptop has 4 GB of memory,
> >
> > 1751 maitra 20 0 422m 2232 964 R 99.7 0.1 22:05.74 pulseaudio
>
> It looks like pulseaudio is in some sort of loop. I'd attach strace to
> it and see what it's doing. The PID is 1751, so you'd do something like:
>
> strace -f -s 256 -p 1751
>
> and cancel with Ctrl+C. You'll probably notice that there are sections
> of output that simply repeat. Send a bit back to the list. It's hard
> to say whether or not the problem will be apparent, but that'll be a
> place to start.
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Hi,
Many thanks for your e-mail. It appears that you are right because the
following loops incessantly, and only when I go into pm-hibernate, not
when I go into pm-suspend.
Here is the necessary output:
% top
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1589 maitra 9 -11 422m 2176 1048 R 94.9 0.1 8:48.81 pulseaudio
% strace -f -s 256 -p 1589
The following keeps on scrolling:
[pid 1589] ppoll([{fd=5, events=POLLIN}, {fd=21, events=POLLIN}, {fd=9, events=0}, {fd=4, events=POLLIN}, {fd=20, events=POLLIN}, {fd=26, events=POLLIN}, {fd=31, events=POLLIN|POLLERR|POLLHUP}, {fd=31, events=0}, {fd=30, events=POLLIN}, {fd=29, events=POLLIN}, {fd=22, events=POLLIN}, {fd=25, events=POLLIN}, {fd=16, events=POLLIN}, {fd=19, events=POLLIN}, {fd=15, events=POLLIN|POLLERR|POLLHUP}, {fd=15, events=0}, {fd=14, events=POLLIN}, {fd=13, events=POLLIN}, {fd=7, events=POLLIN}], 19, NULL, NULL, 8) = 1 ([{fd=9, revents=POLLHUP}])
Killing pulseaudio (the process) seems to take care of it, and the
temperature cools.
Once again, I am running the F14-LXDE spin.
Many thanks,
Ranjan
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