[Openchrome-users] Openchrome and via KM400

[Rhon]

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 ?

Thanks for your help.

Best regards.