Bug#467105: ATI driver: use of Xv causes one monitor to be repeatedly blanked
On Tue, Feb 26, 2008 at 12:07 PM, Darren Salt
> retitle 467105 ATI driver: "xset dpms force on" causes one monitor to be blanked briefly
> I demand that Alex Deucher may or may not have written...
> > On Sun, Feb 24, 2008 at 11:21 AM, Darren Salt
> > <email@example.com> wrote:
> >> I demand that Brice Goglin may or may not have written...
> >>> Darren Salt wrote:
> >>>> One of my monitors (VGA-0) is repeatedly and regularly blanked and
> >>>> unblanked, each change being approx. 1s apart when Xv is in use, e.g. by
> >>>> gxine.
> >> Actually, more like 1s off, 3s on, and for each pair of state changes,
> >> there is a corresponding pair of
> >> enable montype: 1
> >> enable montype: 3
> >> in the log.
> > Why is gxine calling the DPMS hooks for the monitors?
> It's designed to allow blanking when nothing is being played or the stream is
> paused; on starting or resuming playback, it is intended that gxine will
> unblank the display automatically. (There's no guarantee that the method used
> to resume or start playback will also cause X to automatically unblank the
> display; equally, there's no guarantee that the screen blanker will have cut
> in, and gxine has no knowledge of whether it has.)
> Also, I don't want it to ever be able to fail to restore the DPMS settings –
> by not altering them, there's nothing to restore. This does require ensuring
> that the blank timer never reaches 0 (unless it's set ludicrously low).
But why does it do it repeatedly? that's what causes the blinking. it
should do it once, or am I missing something?
> > Do other video players have the same problem?
> Any which use the same methods will, since "xset dpms force on" is sufficient
> to trigger the problem.
when you run "xset dpms force on" does the blinking continue after you
run it or does it happen once?