From Bugzilla Helper: User-Agent: Mozilla/4.8 [en] (X11; U; Linux 2.4.20-18.7 i686) Description of problem: I have an IBM Intellistation M-Pro (6889-94U --- that's a not new Pentium III box), with a Matrox Millennium G450 dual-head graphics adapter in the AGP slot. I use it to drive two monitors: an IBM P202 on the left, and an IBM P260 on the right. I configured XFree86 and the G450 to use the two monitors as one logical surface, using Xinerama. Each monitor runs at 1600x1200, giving me a total of 3200x1200 distinct pixels. This has been working fine for months, since I bought the G450. I am running RedHat Linux 7.1, updating with `up2date` occasionally. Today I updated again, and was given new X server stuff, all of version 4.1.0-49 (along with other things, such as the 2.4.20-18.7 kernel). After rebooting and starting X, I found the left monitor blank, and the corresponding half of my logical surface inaccessible. That monitor complains about the input signal being out of range. I looked in the X server's log file, and found a complaint about DRI, so I tried editing my X server config file to omit the DRI section; that did not solve the problem. Version-Release number of selected component (if applicable): XFree86-4.1.0-49 How reproducible: Always Steps to Reproduce: 1. Install G450 card. 2. Install mgadrivers-2.1.tgz and mgapdesk-1_00_7beta_i386.rpm from Matrox. 3. Hack up any old one-head X config, and use it to run MGA PowerDesk to create a dual-head XFree86-4 config file. Ignore complaint about display drivers not being supported. Pick dual-head "merged" config. 4. Re-start X server. Actual Results: In that case, I think I got 3200x1200 pixels stuffed onto one 1600x1200 monitor via scrolling. Expected Results: Two monitors running at 1600x1200 each, each displaying half of a logical 3200x1200 surface. Additional info: Will attach config file & log.
Created attachment 92692 [details] This is the config file that worked until today
Created attachment 92693 [details] Here is the log file produced from running that config file.
The XFree86 people don't want to touch this, since they do not support 4.1 (you can find this bug reported,and rejected, in their Bugzilla).
Red Hat does not support any 3rd party video drivers. We support only the drivers that ship with Red Hat Linux and XFree86, and only running on an official Red Hat Linux kernel with no 3rd party kernel modules loaded. You should contact Matrox directly for any technical support or bug reports for the drivers they provide on their website.