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 matroxfb modes
Could someone please help me out with matroxfb?

I'm trying to set up the frame buffer so I can get a bigger vt than the
default 80x25 chars....  Simply compiling matroxfb support results in my
terms being completely corrupted....

I've tried several of the modes in fb/matroxfb.txt docs, but all I get is
varying degrees of corruption in the text modes, and my X windows
shrink....  Clearly I'm missing something.  I've done this successfully
before, but not with matrox cards....

My video card is a G550:

01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G550 AGP (rev 01) (prog-if 00 [VGA])
        Subsystem: Matrox Graphics, Inc. Millennium G550 Dual Head DDR 32Mb
        Flags: bus master, medium devsel, latency 32, IRQ 5
        Memory at d8000000 (32-bit, prefetchable) [size=32M]
        Memory at da000000 (32-bit, non-prefetchable) [size=16K]
        Memory at db000000 (32-bit, non-prefetchable) [size=8M]
        Expansion ROM at <unassigned> [disabled] [size=128K]
        Capabilities: [dc] Power Management version 2
        Capabilities: [f0] AGP version 2.0

 Sun, 08 Jul 2007 23:02:20 GMT   
 matroxfb modes
On Wed, 19 Jan 2005 15:02:20 UTC in comp.os.linux.hardware, Captain

This is the append line from my /etc/lilo.conf. It sets the vertical
refresh rate to 75Hz and it's probably that that causes your problems.

append = "video=matrox:vesa:0x11A,fv:75"

My kernel has matroxfb support built-in, not as a module. I think you
can do the same sort of thing as a module but you'd have to pass
parameters to the module as you load it and those may differ in format
from the ones I use. The 0x11A tells it to run my console at
1280x1024x16bpp - you may need to pick a different mode if you don't
have a monitor capable of supporting this sort of resolution.

Trevor Hemsley, Brighton, UK.
Trevor-Hemsley at dsl dot pipex dot com

 Sun, 08 Jul 2007 23:15:42 GMT   
 matroxfb modes

OK, thanks.  I got a graphics console at 1024x768 - I guess matrox wants
75Hz refresh, and I was using 72..... Two issues:

1.  The font stayed the same - I still have 80x25; I'm looking for
something bigger.  Any way to set the equivalent of the vga=791 setting?

2.  I've lost acceleration under X...  Any way to run both a matrox fb for
the consoles and the matrox mga driver for X?  Or to get acceleration
under X using matroxfb?  At least from the kernel docs (fb/matroxfb.txt)
it should seem possible, but I'm not sure how....


 Mon, 09 Jul 2007 01:09:34 GMT   
 matroxfb modes
[followup set]

On 19 Jan 2005 15:15:42 GMT, Trevor Hemsley <> wrote:

And as another data point, my line reads:


Works nicely, and switching between X and console doesn't corrupt either
one. This is with a G400 though; I own a G550, but its machine is headless.


  // Jorgen Grahn <jgrahn@       Ph'nglui mglw'nafh Cthulhu
\X/      >   R'lyeh wgah'nagl fhtagn!

 Mon, 09 Jul 2007 03:44:17 GMT   
 matroxfb modes


What's your font size in the virtual consoles?  My whole purpose was to
get better usage out of the text modes, and my fonts stayed the same....

 Mon, 09 Jul 2007 03:56:20 GMT   
 matroxfb modes

OK, after much trial and error here's what works for me:


Note that I have to use matroxfb, not matrox, and the vesa video modes
don't work at all....

Not sure why; I'm running a 2.6.9 kernel w/ grub and not lilo....

 Mon, 09 Jul 2007 06:05:42 GMT   
   [ 6 post ] 

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