[Pkg-fglrx-devel] Bug#579500: Bug#579500: fglrx-driver: GL screensavers spanning two screens display extensive corruption

John Gruenenfelder johng at as.arizona.edu
Thu Apr 29 02:22:05 UTC 2010

On Wed, Apr 28, 2010 at 09:50:35PM -0400, Michael Gilbert wrote:
>On Wed, 28 Apr 2010 21:22:41 -0400 Michael Gilbert wrote:
>> wontfix 579500
>> thanks
>> On Tue, 27 Apr 2010 21:03:18 -0700 John Gruenenfelder wrote:
>> > I have a large desktop (3200x1200) made by spanning two screens, both plugged
>> > into my Radeon HD 4850 video card.  When xscreensaver launches a GL hack, it
>> > can be a small one which will appear on one screen or another, or it may be
>> > one which spans both screens.
>> thanks for the report, but there is really nothing we can do since we
>> don't have access to ati's source code.  you should contact them
>> directly for support (afterall you did pay them under the expectation
>> that you would be getting a device with the opengl standard correctly
>> implemented).
>err, on second thought, their problem is supporting standard x
>features such as xrandr, rather than implementing their own buggy
>proprietary multimonitor solution.

Hello Mike,

To be honest, I really didn't expect a fix given that these are the
proprietary drivers.  My intention was primarily to have the bug listed in the
bug database for others to find and to, perhaps, offer a location for
discussion about the bug in the off chance that somebody might find a
work-around.  And if no fix/work-around is pending, at least others will see
that it's not just them, but it is a known fault.

As for xrandr... no kidding.  It took a lot of trial and error and script
hacking to get gdm to run xrandr as the last command of its Init phase and
have the call to xrandr actually do what I wanted it to do.  Even now, it
works, but there is some major voodoo involved because if I disable the simple
logging in my xrandr executing script, it won't behave properly.  Keep the
logging turned on and, surprise, it works as expected.  Woo...

I really hope the radeon and radeonhd drivers pick up the pace sooner than

--John Gruenenfelder    Systems Manager, MKS Imaging Technology, LLC.
Try Weasel Reader for PalmOS  --  http://weaselreader.org
"This is the most fun I've had without being drenched in the blood
of my enemies!"
        --Sam of Sam & Max

More information about the Pkg-fglrx-devel mailing list