[Openchrome-users] Openchrome and via KM400

[Xavier Bachelot]

On 12/09/2012 01:20 PM, Rhon wrote:
> Hi.
> 
> I'm trying to use openchrome driver on an old laptopt with VIA KM400
> chipset : here's lspci output :
> 
>     01:00.0 VGA compatible controller: VIA Technologies, Inc.
> KM400/KN400/P4M800 [S3 UniChrome] (rev 01)
> 
> I wonder if I can have hardware acceleration working ?
> 
> I'm using Archlinux with the standard (3.6.9-1) kernel. I've manually
> modprobed via driver and it seems to load fine :
> 
>     kernel: [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
>     kernel: [drm] No driver support for vblank timestamp query.
>     kernel: [drm] Initialized via 2.11.1 20070202 for 0000:01:00.0 on
> minor 0
> 
> But when I launch Xorg, I've the following errors in the log :
> 
>     [  2634.598] (EE) CHROME(0): [drm] drmAgpAcquire failed 19
>     [  2635.138] (EE) CHROME(0): [drm] Failed to initialize DMA
> ring-buffer: 14
>     [  2635.366] (EE) AIGLX error: dlopen of
> /usr/lib/xorg/modules/dri/unichrome_dri.so failed
> (/usr/lib/xorg/modules/dri/unichrome_dri.so: cannot open shared object
> file: No such file or directory)
>     [  2635.366] (EE) AIGLX: reverting to software rendering
> 
> Full Xorg log is available here : http://pastebin.com/raw.php?i=Rs8Wdpmk
> 
> I've seen there's a package named "unichrome-dri" in Archlinux
> repository, but I can't install it because it is flagged as
> "conflicting" with xf86-video-openchrome (v0.3.1-2).
> 
> Is it possible to have hardware acceleration working with this chipset ?
> Where I can find an openchrome compatible Xorg dri module ?
> 
The unichrome DRI module has been removed from Mesa together with all
the DRI 1 only modules, so there currently no way to get 3D acceleration
for VIA chipsets. You'll have to use the softpipe driver until further
development happens, be it either revival of the old module by porting
it to DRI2 or a new Gallium3D module is written.

Regards,
Xavier