[Openchrome-users] lack of hardware acceleration for unichrome P4M890

[Xavier Bachelot]

tom491 at freenet.de wrote:
> Dear all,
> 
> sorry for a newbie's question. I have installed the openchrome driver for my VIA Unichrome 3D (P4M890 chipset) graphics card on a Xubuntu 7.10 system. However, hardware acceleration does not work, and any graphics application consumes a lot of CPU power.
> 
> When I run glxinfo in verbose mode, it says
> 
> libGL: XF86DRIGetClientDriverName: 5.0.0 unichrome (screen 0)
> libGL: OpenDriver: trying /usr/lib/dri/unichrome_dri.so
> libGL error: dlopen /usr/lib/dri/unichrome_dri.so failed (/usr/lib/dri/unichrome_dri.so: cannot open shared object file: No such file or directory)
> libGL error: unable to load driver: unichrome_dri.so
> name of display: :0.0
> display: :0  screen: 0
> direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose)
> ...
> 
> A similar thing is reported in /var/log/Xorg.0.log:
> 
> (II) CHROME(0): direct rendering enabled
> ...
> (EE) AIGLX error: dlopen of /usr/lib/dri/unichrome_dri.so failed (/usr/lib/dri/unichrome_dri.so: cannot open sh
> ared object file: No such file or directory)
> (EE) AIGLX: reverting to software rendering
> 
> Well it is pretty obvious. It tries to load /usr/lib/dri/unichrome_dri.so, which does not exist, and then falls back to software rendering. But how do I tell it to use a different driver library instead? And what library? (And why didn't it work from the start?)
> 
> Any help is greatly appreciated.
> 
> Best regards
> Tom
> 
You're missing the mesa package. It's named libgl1-mesa-dri in Ubuntu.

Regards,
Xavier