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Re: ATI dual head and 2nd PCI video card

On Thu, 2006-04-13 at 15:37 +1000, Greg Vickers wrote:


Michel Dänzer wrote:

On Wed, 2006-04-12 at 14:51 +1000, Greg Vickers wrote:


1) Usually, all the Gnome stuff (panels, menus etc) are on the left ATI
display and the right ATI display has none of this stuff on it. With the
below configuration, the panels spread across both ATI displays and the
Gnome stuff is replicated on the S3 display. I would like there to be no
stuff (don't you like the technical term?) on the S3 display and all the
Gnome stuff still only on the left ATI display.

2) xscreensaver only activates on the left ATI display and the S3
display - not the right ATI display. (I know this is related to the
Gnome stuff being shown on both ATI displays.)


Please post the corresponding log file.


[...]


Now with the S3 displaying like this, the gnome panels have remained on
the primary ATI monitor and do not stretch across to the secondary ATI
monitor.

The behavior of xscreensaver remains the same, it is only displayed on
the primary ATI monitor and the S3 monitor - the secondary ATI monitor
fades to black then shows up whatever was on the desktop!


Weird, the log file shows the fglrx in-driver Xinerama implementation
being enabled. Does

DISPLAY=:0.0 xdpyinfo -ext XINERAMA

or

DISPLAY=:0.0 xdpyinfo -queryExt

show anything interesting about Xinerama?

I guess it's possible that xscreensaver gets confused by this mixed
(non-)Xinerama setup. If you start it manually, does it say anything
interesting?

Also, I'm curious if any of the following makes a difference:

      * Option "DesktopSetup" "vertical" instead of "horizontal"
      * Not enabling Option "OpenGLOverlay" (an exotic feature mostly
        used by workstation class OpenGL apps)



* The Gnome panels are displayed on the S3 and the workspaces on that
display switch independently of the display on the ATI monitors. I
guess this is a xinerama thing?


Yes, because the S3 screen is not merged with the others by Xinerama,
GNOME has to treat :0.0 and :0.1 independently.


-- 
Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer