device support VGA compat Matrox MGA G200ew

device support VGA compat Matrox MGA G200ew

[Linda Walsh]

I was reviewing my kernel config and seeing what devices were
handled by what drivers -- and that all of them were configurable
via kernel devices.

I used an lspci -bkv to show me the kernel driver being used for each 
device.

One that would seem to be of some importance is the graphics controller.
There were some others devs that were 'unclaimed', but don't know
that they have a tangible effect and have yet to try a few
options, so won't bother with them here, but this one is a puzzler:

08:03.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200eW 
WPCM450 (rev 0a) (prog-if 00 [VGA controller])
        Subsystem: Dell PowerEdge T610 MGA G200eW WPCM450
        Flags: bus master, medium devsel, latency 32, IRQ 10
        Memory at d9800000 (32-bit, prefetchable)
        Memory at de7fc000 (32-bit, non-prefetchable)
        Memory at de800000 (32-bit, non-prefetchable)
        Capabilities: [dc] Power Management version 1


I have tried the dev support under the 'frame buffer devs'
for Matrox accel, with ghe G100/G200/... options checked 'on'
(and Matrox I2C support as a module). But that modules doesn't
seem to be attached to this HW.

The only other Matrox G200 related option under the DRM support, but it
says it requires /dev/agpgart to be enabled.  I know the computer doesn't
have an AGP 'slot' (the card is built-in), but is is possible AGP
would still be the choice for the interface?

Other ideas or not-supported?

Thanks!
Linda

Re: device support VGA compat Matrox MGA G200ew

[Francois Romieu]

Linda Walsh <lkml@tlinx.org> :
[...]
> The only other Matrox G200 related option under the DRM support, but it
> says it requires /dev/agpgart to be enabled.  I know the computer doesn't
> have an AGP 'slot' (the card is built-in), but is is possible AGP
> would still be the choice for the interface?

Yes. lspci should list an AGP bridge.

See http://ubuntuforums.org/showthread.php?t=1505532

X seems to know the G200eW. It may help you figuring if
drivers/video/matrox/* (see matroxfb_base.c for the IDs) can be made
to work with this revision or not.

No idea if in-kernel DRM support still works. Imho it will fly like
a brick.

-- 
Ueimor

Re: device support VGA compat Matrox MGA G200ew

[Linda Walsh]

Francois Romieu wrote:
> Linda Walsh <lkml@tlinx.org> :
> [...]
>   
>> The only other Matrox G200 related option under the DRM support, but it
>> says it requires /dev/agpgart to be enabled.  I know the computer doesn't
>> have an AGP 'slot' (the card is built-in), but is is possible AGP
>> would still be the choice for the interface?
>>     
>
> Yes. lspci should list an AGP bridge.
>   
----
ok...then that's not the case.

It's a built-in graphics on a server, so it's not meant to be fancy..
just provide a basic console.

> See http://ubuntuforums.org/showthread.php?t=1505532
>
> X seems to know the G200eW. It may help you figuring if
> drivers/video/matrox/* (see matroxfb_base.c for the IDs) can be made
> to work with this revision or not.
>   
----
    hmmm...  so might be a matter of the driver not recognizing the card's
specific id? 
> No idea if in-kernel DRM support still works. Imho it will fly like
> a brick.
>   
---
    yeah, well w/o agp, it's a non-issue.  I.e., it flew like lead brick.