On Fri, 05 Apr 2002 10:51:48 -0600 Jim Fitzmaurice <jpfitz@fnal.gov> wrote: [...] > First indication of trouble is in the log file > /var/log/XFree86.0.log: > > (II) Primary Device is: PCI 03:00:0 > (WW) MGA: No matching Device section for instance (BusID PCI:4:0:0) > found > > When in fact as you can see in the XF86Config file below I *DO* > have a Device section for BusID "PCI:4:0:0", but the above error, > I believe, results in the following: > > (II) Setting vga for screen 0. > (II) Setting vga for screen 1. > (II) Loading sub module "vgahw" > > As you can see screen 2 is never set. > > Comparing the log files between the two headed and four headed > machines that work and the three headed machine that doesn't work, > I noticed one major glaring omission. In the two headed and four > headed machines that works I see the following messages: > > (II) Loading sub module "mga_hal" > (II) LoadModule: "mga_hal" > (II) Loading /usr/X11R6/lib/modules/drivers/mga_hal_drv.o > (II) Module mga_hal: vendor="The XFree86 Project" > compiled for 4.0.3, module version = 1.0.0 > ABI class: XFree86 Video Driver, version 0.3 > (II) MGA(0): Matrox HAL module used > > I get no such messages in the three headed one that doesn't work. [...] > Maybe the second "a" in the > mga_hal module stands for "analog" and forces the card to produce > analog video output. Matrox Graphic Array Hardware Abstraction Layer, I believe. I believe that for some reason (probably a bug, it's not likely this case has ever been tested before) the two graphic cards are just not being recognized correctly, so the Hardware Abstraction Layer for that type of card doesn't get loaded, so it's unable to operate the cards properly. I notice the "compiled for 4.0.3" in your log. Have you tried the current release, 4.2.0? There's a small chance that someone else has found and fixed the problem since 4.0.3. If that doesn't work you might try the Xpert list. Keep in mind I'm just guessing here. I have no knowledge of multiple heads, or Matrox cards, or video driver internals. But nobody else has responded, so.... -- Remember, more computing power was thrown away last week than existed in the world in 1982. -- http://www.tom.womack.net/computing/prices.html
