Red Hat Bugzilla – Bug 320711
mga driver no longer able to set display to higher (1280x1024) resolutions
Last modified: 2009-01-09 02:18:10 EST
Description of problem: Unable to set display to 1280x1024@60 (preferred) or
Version-Release number of selected component (if applicable): xorg-x11-server
220.127.116.11-28.fc8, compiled for 1.3.0, module version = 1.4.6
How reproducible: Easily and consistently
Steps to Reproduce:
1. Boot F8 Test2 or Test3
2. Wait until system stops chugging away and "Out Of Range" appears on screen
3. Hit Ctrl-Alt-+ or Ctrl-Alt-minus until you see the login screen
Actual results: I can get 1024x768@48, but nothing "better"
Expected results: 1280x1024@60 like I did under SuSE 10.2
Additional info: If I let Fedora 8 Test 2 or 3 choose the parameters at
installation time and/or select from the drop-down menus, it will give me
HorizSync 31.5 - 67.0 and VertRefresh 50.0 - 75.0 in /etc/X11/xorg.conf
If I comment these values out, forcing the driver to figure things out for
itself by reading the hardware, it still doesn't do the trick.
The hardware is a Matrox G550 AGP card using DVI to an "hp pavilion f70"
17" LCD display (HP model number D5064, no "A"). This used to work under
SuSE 10.2, which uses XFree/X.org 6.8.2 module rev 1.1.1. This combo also
failed under Debian Etch. Comments in various other fora indicates that this
problem is pervasive in the newer X.org mga drivers. "Tweaking" the HorizSync
and VertRefresh settings to match those generated by SuSE's "dex" and
Debian's "dexconf" didn't resolve the problem, either. The HP f70 owner's
manual indicates that the display should handle H 30-80 V 56-75, and it
can go 1280x1024@75 but recommends 1280x1024@60 maximum. (System is an
Asus A7M266-D mobo, 2GB RAM, two AMD Athlon(TM) MP 1800+ CPUs)
Created attachment 217911 [details]
Initial Xorg.0.log file
Created attachment 299440 [details]
With xorg-x11-drv-mga-1.4.8-1.fc9.i386, unable to get more than 800x600 at 60Hz.
Hmm. My problem looks different from Bayard's. Maybe a kernel mga.ko driver
problem? Please advise if I should file a new bug.
Just to be clear, it looks like xorg-x11-drv-mga is completely broken in
rawhide, judging by the thousands of lines of "Failed to find device matching
1@128:0:0" in Xorg.0.log. I've reported it here, because it gives similar
symptoms to the summary line for this bug, though the resolution is much less.
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