Bug#467105: ATI driver: use of Xv causes one monitor to be repeatedly blanked

[Alex Deucher]

On Sun, Feb 24, 2008 at 11:21 AM, Darren Salt
<linux at youmustbejoking.demon.co.uk> 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?  Do other video
players have the same problem?

Alex

>
>  >> The other monitor (DVI-0) is unaffected, and the position of the
>  >> overlay does not appear to make any difference, though it does need to be
>  >> visible (tested by shading and unshading the video window).
>
>  >> Reverting to 1:6.7.197-1 cured the problem. I have not checked
>  >> intermediate snapshot builds.
>
>  > Please try at least these intermediate snapshot. There are 6 of them
>  > available at http://snapshot.debian.net
>
>  > Or better, do a git-bisect in the upstream git repository
>  > http://gitweb.freedesktop.org/?p=xorg/driver/xf86-video-ati.git to locate
>  > the exact commit breaking this. If you need help, please let me know.
>
>  9ab5d2ec7c583c74f364d7cfbb54bcd2cd8ae2f5 is first bad commit
>  commit 9ab5d2ec7c583c74f364d7cfbb54bcd2cd8ae2f5
>  Author: Alex Deucher <alex at botch2.(none)>
>  Date:   Mon Feb 11 15:26:51 2008 -0500
>
>     RADEON: always restore crtc1 before crtc0 when using both crtcs
>
>     In some rare cases restoring crtc0 first will result in a blank screen
>     on crtc1.  If you are having issues with a blank screen on crtc1
>     that used to work on 6.6.3 or before, this should help.
>
>  6.8.0 with this reverted is fine.
>
>  --
>  | Darren Salt    | linux or ds at              | nr. Ashington, | Toon
>  | RISC OS, Linux | youmustbejoking,demon,co,uk | Northumberland | Army
>  | + Travel less. Share transport more.           PRODUCE LESS CARBON DIOXIDE.
>
>  You can't get to Heaven on roller skates.