[Dri-users] Intel 915GM

[Alex Deucher]

On 4/18/06, Moritz Beller <m.o.m.o at web.de> wrote:
> Alex Deucher wrote:
> > On 4/18/06, Moritz Beller <m.o.m.o at web.de> wrote:
> >> I have got an Intel 915GM graphic chip that I am trying to get to work
> >> with Linux. I was able to have it supported with xorg 11R7.0-1 and the
> >> according kernel modules built-in (2.6.15.2). Low and behold!, hardware
> >> acceleration was turned on according to glxinfo. Even though this was at
> >> least working, it had a severe problem with fullscreen mode when using
> >> OpenGL: Instead of actually stretching the image over the whole screen,
> >> it either remained a "window" the size of the configured resolution (cf.
> >> Quake III-based games) or was placed at the center of the screen with
> >> the surrounding parts of the screen being black.
> >>
> >
> > Either you don't have bios support for the modes you want to use, or
>
> I have 915resolution set my 1400x1050 video mode accordingly:
>
> Chipset: 915GM
> BIOS: TYPE 1
> Mode Table Offset: $C0000 + $269
> Mode Table Entries: 36
> Patch mode 5c to resolution 1400x1050 complete
>
> Indeed, there might be some BIOS issue related with the stretching problem:
>
> Chipset: 915GM
> BIOS: TYPE 1
> Mode Table Offset: $C0000 + $269
> Mode Table Entries: 36
>
> Mode 30 : 640x480, 8 bits/pixel
> Mode 32 : 800x600, 8 bits/pixel
> Mode 34 : 1024x768, 8 bits/pixel
> Mode 38 : 1280x1024, 8 bits/pixel
> Mode 3a : 1600x1200, 8 bits/pixel
> Mode 3c : 1400x1050, 8 bits/pixel
> Mode 41 : 640x480, 16 bits/pixel
> Mode 43 : 800x600, 16 bits/pixel
> Mode 45 : 1024x768, 16 bits/pixel
> Mode 49 : 1280x1024, 16 bits/pixel
> Mode 4b : 1600x1200, 16 bits/pixel
> Mode 4d : 1400x1050, 16 bits/pixel
> Mode 50 : 640x480, 32 bits/pixel
> Mode 52 : 800x600, 32 bits/pixel
> Mode 54 : 1024x768, 32 bits/pixel
> Mode 58 : 1280x1024, 32 bits/pixel
> Mode 5a : 1600x1200, 32 bits/pixel
> Mode 5c : 1400x1050, 32 bits/pixel

have you specified the modes you want to use in the screen section of
your xorg.conf?

>
> > the driver isn't using the LCD scaler to stretch non-native modes to
> > the native res of the panel, or both.
>
> Is there anything that could be done about it?

Regarding the scaler, I don't know.  I'm not that familiar with the
i810 driver or hardware.

Alex

>
> Moritz
>