[ubuntu karmic] mythtv-frontend does not prevent display being put to sleep during tv watching

[ullix]

my computer display is switched off after some inactivity (as it should) but even during watching tv with myth-frontend

I am using :
mythfrontend --version
Please include all output in bug reports.
MythTV Version : 22492
MythTV Branch : branches/release-0-22-fixes
Network Protocol : 50
Library API : 0.22.20091008-1
QT Version : 4.5.2

from:
deb http://ppa.launchpad.net/mythbuntu/trunk-0.22/ubuntu karmic main

[Mario Limonciello (superm1)]

Can you confirm whether this is gnome screensaver doing this, or the X power management?

You can confirm it's gnome-screensaver if when it happens you ssh in and killall gnome-screensaver and the display comes back.

That would mean that the gnome-screensaver inhibition stuff isn't working.

[tankdriver (stoneraider-deactivatedaccount)]

I can confirm this issue too. (SD and HD channels, no desktop effects)

[ullix (ullix)]

Mario, I tried to find the answer to your question, but there seem to be a few more oddities. Looks like gnome-screensaver has problems of its own and in its interaction with mythtv.

I set the preferences in the gnome-power-manager 2.28.0 to (for battery and AC)
- put the computer to sleep when inactive for: 1h
- put the display to sleep when inactive for: 1 min

On battery:
cold boot, then some cursor movement on the desktop before starting timing: nothing happened at 1min, but at 5min the display dimmed slowly to off. Via ssh from a second computer I killed gnome-screensaver, and the display came right back. Then, in intervals of 1 min, the screen switched to off in an quick change (I guess that slow-dimming is gnome-screensaver and quick-off is X power management?) Then I used mythtv-frontend to watch live tv, and it was still running fine at 8min. When stopping live-tv and looking at mythtv menues or other textual info, then screen was switched quick-off in 1 min intervals.

On AC:
same procedure as with battery: nothing happened at 1min, but slow dim off at 5min, and again, killing gnome-screensave via ssh brought the display back. But then it kept running beyond 8min. Not surprinsingly, live-tv via mythtv-frontend runs continuously.

On battery and AC:
from a cold boot with the gnome-screensaver running and mythtv showing live-tv: nothing happened at 1min, but mythtv crashed in 8 out of 9 attempts at 2-4 min. Once I was able to get mythtv runing to 5min, when the display dimmed off slowly. But then the display came back some 10 seconds later.

[Mario Limonciello (superm1)]

So the way that we work to disable screensaver is by running:
"gnome-screensaver-command --poke"

Can you start mythfrontend like this so we can see if it's even trying to run that command (and rule out if it's a gnome screensaver not responding to the poke problem, or a problem with the way myth is using the poke)

mythfrontend -v important,general,playback

[ullix (ullix)]

running on battery; looks like it's poking every 50 seconds?

$ mythfrontend -v important,general,playback | grep save
2009-10-18 19:06:18.074 ScreenSaverX11Private: Gnome screen saver support enabled
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL /dev/mixer
2009-10-18 19:07:22.240 ScreenSaverX11Private: Calling gnome-screensaver-command --poke
2009-10-18 19:08:12.251 ScreenSaverX11Private: Calling gnome-screensaver-command --poke
2009-10-18 19:09:02.254 ScreenSaverX11Private: Calling gnome-screensaver-command --poke
2009-10-18 19:09:52.237 ScreenSaverX11Private: Calling gnome-screensaver-command --poke

after this mythtv crashed again

[Mario Limonciello (superm1)]

I've marked this as a duplicate of bug 428884 because it looks like the patch that fixes it for VLC should fix it for mythtv too.

[ullix (ullix)]

with all updates from uo to this evening (Oct 20, 2009):

nothing is fixed. with the gnome-power-manager set to put the display to sleep in 1 min, nothing happens at this time, wjhile the display dims off slowly at 5 min, which is not set, neither for battery nor for AC.

mythtv is also not switched off at 1min (not sruprising given above) I can't determine if it is switched off at 5min, because it is always chrashing between 2 and <5min.

Killing gnome-screensaver results in the display switched fast-off at 1min. mythtv sometimes crashes at 2min, sometimes goes up to +8min.

[Mario Limonciello (superm1)]

(the bug this is a duplicate of isn't fixed yet)

On Tue, Oct 20, 2009 at 15:37, ullix <email address hidden> wrote:

> *** This bug is a duplicate of bug 428884 ***
> https://bugs.launchpad.net/bugs/428884
>
> with all updates from uo to this evening (Oct 20, 2009):
>
> nothing is fixed. with the gnome-power-manager set to put the display to
> sleep in 1 min, nothing happens at this time, wjhile the display dims
> off slowly at 5 min, which is not set, neither for battery nor for AC.
>
> mythtv is also not switched off at 1min (not sruprising given above) I
> can't determine if it is switched off at 5min, because it is always
> chrashing between 2 and <5min.
>
> Killing gnome-screensaver results in the display switched fast-off at
> 1min. mythtv sometimes crashes at 2min, sometimes goes up to +8min.
>
> --
> [ubuntu karmic] mythtv-frontend does not prevent display being put to sleep
> during tv watching
> https://bugs.launchpad.net/bugs/453377
> You received this bug notification because you are a member of Mythbuntu
> Bug Team, which is subscribed to mythtv in ubuntu.
>

--
Mario Limonciello
<email address hidden>