[mythtv-users] power off and on frontend only with remote

[Leighton Brough]

Leighton Brough wrote:
> "Nearly perfect" is exactly where I'm up to now as well. I find I get 
> occasional (hard lockup) crashes on resume from S3, and the playback of 
> some recordings stutter after resume too. But it is probably only a 
> matter of time before I get to the bottom of these since I've only had 
> it working like this for a few days.
>
>   
For the archive:

I've got the resume from suspend-to-RAM going completely reliably now. 
With a 2.6.18 kernel there is a bug whereby the reset timer hardware is 
not correctly re-synchronised with the restored state of the kernel on 
resume. Consequently the kernel sometimes goes into a _very_ long loop 
looking for the next tick which means it locks up hard. The workaround 
hack is:

echo jiffies > /sys/devices/system/clocksource/clocksource0

before suspending.

Strangely, I also needed to choose the QT painter in the frontend, as 
the OpenGL one sometimes results in crashes on resume. Maybe this is 
also related to the clocksource too?

The playback issue is still there - I believe this is also due to the 
same clocksource problem - resulting in broken frame timing. There are 
changes in the 2.6.19 kernel which look like they should fix this.

Leighton