Bug#621666: xserver-xorg-video-radeon: video playback only displays/updates on one monitor when both are enabled with xrandr

[Michel Dänzer]

On Don, 2011-04-07 at 11:49 -0400, Daniel Kahn Gillmor wrote: 
> Package: xserver-xorg-video-radeon
> Version: 1:6.13.1-2+squeeze1
> Severity: normal
> 
> I'm using stock squeeze on this powerbook.  When i enable the DVI
> output concurrently with the LVDS (using xrandr --output DVI-0
> --same-as LVDS), everything works fine except for video playback.
> 
> i've tried video playback with both VLC and Totem, and the video
> itself only updates on one of the screens (it seems to prefer to show
> up on LVDS, not on the external monitor).  The other monitor sees
> either a black rectangle where the video should be, or a static frame
> of the video (i haven't been able to figure out a pattern for one or
> the other).

[...]

> (II) RADEON(0): Set up overlay video

[...]

> Changing OV0_BASE_ADDR from 0xb8000000 to 0xbb800000

This is probably due to using the XVideo overlay adaptor. The display
hardware can only display the video overlay on one CRTC at a time. You
can choose which CRTC to display it on via the XV_CRTC XVideo attribute,
or at least some applications allow using the textured video adaptor
(which doesn't have this restriction) via the adaptor/port number as
shown by xvinfo.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer