Re: F14: high temperatures after coming back from hibernate

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On Fri, 5 Nov 2010 18:55:19 -0500 Gordon Messmer <yinyang@xxxxxxxxx>
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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