Matrox QID Low-profile PCI on Ubuntu Edgy

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Matrox QID Low-profile PCI on Ubuntu Edgy

Postby amitry » Fri Jan 12, 2007 6:40 am

Hello,

I am trying to get a Matrox QID Low-profile PCI running on Ubuntu Edgy 6.10.

Ideally, I want to connect four Sony SDM-X53 15" LCD monitors via DVI to create one large horizontal desktop.

I have flashed the card with the latest bios and installed the latest mtx driver 1.4.4.4 from this site.

Attached is my xorg.conf and Xorg.0.log

Any help would be greatly appreciated.
Attachments
Xorg.0.log
(44.42 KiB) Downloaded 288 times
xorg.conf
(2.79 KiB) Downloaded 305 times
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Postby tuxx-home.at » Fri Jan 12, 2007 10:10 am

Well, what's your problem? I mean, what do you get when starting with
this configuration file?
Do you see only one display, two displays, none at all?
Does your X server crash?
Is the resolution wrong?

According to your Xorg.0.log file I could imagine the following issues:

1. The monitors don't display anything useful.

This could be due to the need for the 'Option "OCC"' in your device sections
as mentioned in your logfile:

(II) MTX(0): -- Using monitors max pixel clock to verify modes. --
(II) MTX(0): -- To override use 'Option "OCC"' in the device section. --


If this is the cause, add the following configuration option to all your
device sections in xorg.conf:

Code: Select all
Section "Device"
   [...]
   Option "OCC"
   [...]
EndSection


According to the following message in your logfile, this seems to be
applicable due to timing issues:

(II) MTX(0): Not using default mode "1280x1024" (bad mode clock/interlace/doublescan)


Therefore, your card switches down the resolution to 1024x768 giving
2048x768 in your merged setup:

(--) MTX(0): Virtual size is 2048x768 (pitch 1024)


This seems to be correct as your display can't do 1280x1024 and therefore
you'll have to change your Modes option in the Display Subsection to
the appropriate value also used for the MetaModes.

Is your mtx kernel module loaded? The following message usually
comes from the kernel module being not loaded:

(WW) MTX(0): OpenGL is disabled as this feature is not supported on this hardware


It could of course also be that your hardware really doesn't support OpenGL,
but I'd check the presence of the mtx kernel module first.

Connection four displays to your card shouldn't be a problem, but your
configuration file is only setup for two displays (dual-merge).

To enable support for all four available displays, you will need to do the
following modifications to your xorg.conf:

1. Add another Device section for the second output of your QID card

2. Add an additional screen section for this device

3. Adapt your ServerLayout section to reflect the changes

I attached a modified xorg.conf to this message which should do the trick
for you. Please give it a try and report back in case of any errors.
Attachments
xorg.conf
Modified xorg.conf for QID quadhead (merged mode)
(2.44 KiB) Downloaded 348 times
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Postby amitry » Fri Jan 12, 2007 2:48 pm

When starting with either my original xorg.conf or the one you just posted I get to video at all, all four monitors report no signal on the DVI connection.

I can only remote into the box via ssh.

Looks like mtx loaded ok, I attached the relevant section from kern.log.

Also, attached is the Xorg.0.log when using the xorg.conf you gave me.

I also tried adding Option "OCC" in both the new and old xorg.conf files and it didn't help. I attached the log when using it on the new one.
Attachments
Xorg.0.log
with Option "OCC"
(60.23 KiB) Downloaded 293 times
Xorg.0.log
without Option "OCC"
(56.88 KiB) Downloaded 305 times
kern.log
(2.32 KiB) Downloaded 296 times
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Postby tuxx-home.at » Sun Jan 14, 2007 12:41 pm

When starting with either my original xorg.conf or the one you just posted I
get to video at all, all four monitors report no signal on the DVI connection.


If your monitors are really the Sony SDM-X53, then there's something
wrong with the timings as this is the reason why there's no signal on your
displays.

You could try to either use the analog refresh rates for your displays or
try to not mention them at all and let DDC/EDID try to do its best in
initialization your displays.

The configuration file looks good, so your only problem now is with the timing
values.
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