Red Hat Bugzilla – Bug 54474
[MGA450] mysterious resolution of 2nd screen
Last modified: 2007-04-18 12:37:32 EDT
Description of Problem:
I am running an MGA450 dualheaded where the first screen has a resolution
of 1280x1024. When trying to set a PAL resolution (768x576) on the 2nd
screen I get
| (II) MGA(1): Not using mode "pal" (all modes must have the same width)
Then it uses a res. of 1024x768 which has a different width than 1280 also.
Setting the PAL res. on the first screen works also.
Therefore 'width' can not mean the x-resolution of the screen and the
errormsg "all modes must have the same width" is wrong or should be more
Version-Release number of selected component (if applicable):
Created attachment 33621 [details]
Created attachment 33622 [details]
Luugi, could you look into this bug and comment? Any idea what
might be wrong here?
I do not have G450 specs... Are they available yet?
I haven't been able to do anything about this bug unfortunately..
We do not officially support xinerama or dual head mode, however
we do provide the ability to use such. Generally, even though we
do not officially support it, I do still try to fix bugs that come
up when I can (in my own personal time). This is one I'm not able
to touch however I'm afraid, and I do not have G450 technical
specifications. I've Cc'd Matrox however so at least they're
aware of the dualhead problem you've described.
You may also want to try XFree86 4.2.0 from rawhide to see if it fixes
the problem possibly.