Bug#451972: no longer supports xinerama across multiple graphics cards
reassign 451972 xserver-xorg-core
forcemerge 443274 451972
thank you
On Mon, Nov 19, 2007 at 04:16:55PM +0100, martin f krafft wrote:
> Package: xserver-xorg-video-ati
> Version: 1:6.6.193-3
> Severity: serious
>
> sid's xserver-xorg-video-ati (and also in experimental) no longer
> supports MergedFB. Thus, it is no longer possible to address the two
> ports without RandR.
>
> Since RandR is incompatible with Xinerama, and RandR 1.2 does not
> yet support multiple cards (RandR supposedly will), the new ATI
> driver thus breaks all Xinerama setups which use more than one
> graphics card.
>
> I know RandR is the way to go, but I am still filing this bug for
> posterity. I also made it RC because I don't think that this version
> should become part of stable. Instead, RandR 1.3 should enter stable
> so that multihead continues to work as before, without serious
> regressions.
Actually, this is a problem in the X server, not in the driver.
Intel already has the same "feature" in testing for 6 months,
but Xserver 1.4 seems to expose it more than Xserver 1.3 for
some reason.
As soon as you have one board with a RandR 1.2 driver, you can't
use any other board, even if its driver is different and does not
support RandR 1.2. It just crashes the server.
I am merging with the exiting relevant bugs (which are also RC).
Now, when is RandR 1.3 going to happen? I did not see many changes
regarding this so far. And apart from several nice and well supported
RandR 1.2 drivers, there are a bunch of other ones that will be probably
remain broken for multi-head until somebody port them to RandR 1.x.
All this kind of sucks...
Brice
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