PCI display adapter on SGI O2 under Linux

[Alex Deucher]

On 4/16/07, sknauert at wesleyan.edu <sknauert at wesleyan.edu> wrote:
> Howdy, I'm trying to use a PCI video card on my SGI O2 under Linux
> (specifically Debian Etch stable Xorg 7.1.0-15) and running into a number
> of problems.
>
> First of I should state that lspci detects the cards, and depending on
> driver options Xorg can see it too. Also, all cards tested in the O2 have
> been used under a Debian Etch x86 Linux machine and are able to get into X
> just fine, so it is doubtful this is a hardware issue.
>
> That said, with most adapters I got the following error:
>
> (EE) Attempted to read BIOS 64KB from
> /sys/bus/pci/devices/0000:03:06.0/rom: got 32KB
>
> This can be removed by using the following option:
>
> Option    "NoInt10"    "true"
>
> However, I then get multiple copies of the following two errors:
>
> (EE) end of block range 0x1ffffef < begin 0xfffffff0
> (EE) end of block range 0xfef < begin 0xffffff0
>
> And the X server segfaults after loading the main driver module.
>
> This has happened for the following PCI cards:
>
> S3 (s3, s3virge, vesa) - Trio64, Trio64/V2, Virge, Virge DX, Virge GX,
> Virge GX2, Virge Trio3D.
> ATI (ati, r128, radeon, vesa) - Rage XL Pro, Radeon 7000
> 3dfx (tdfx, vesa) - Voodoo Banshee, Voodoo3
> Nvidia (nv, vesa) - TNT2 Pro
> Intel (i740, vesa) - i740
>
> I tried these specifically since I read here:
> http://www.linux-mips.org/wiki/PCI_graphics_cards that these had a good
> chance of working in Xorg under MIPS. I do have a Matrox Millenium I, but
> it does not fit into the O2's case, so I was unable to test it.
>
> I hope that there is some simple configurational option (like setting
> memory locations) that can fix this.
>
> I honestly wish I knew more about X so I could do something about this, or
> at least try to describe the error in a more coherent way. Let me know if
> full /var/log/Xorg.0.log logs or more details with my /etc/X11/xorg.conf
> files would be helpful.
>
> Thanks in advance for any help.
>
>

Most PC graphics cards need to be posted by the bios to work properly.
 You'll need to get your cards posted somehow.  The Xserver has a
built in x86 emulator although I don't know what's needed to make it
work on mips.

Alex