trouble with edubuntu 7.10 and Intel i810 video

[Fredrik Jansson]

Hi,
I've just installed edubuntu 7.10 and the clients (with i810 video)
boot up and starts x. But when a user logout clients can
not re-/start X/gdm again. I've got the following error msg:

             [drm:i810_wait_ring] *ERROR* lockp
             [drm:i810_wait_ring] *ERROR* space: 65520 wanted 65528

Are there known fixes/workarounds to this problem?
Earlier we ran debian and ltsp4.2 and it worked great except sound...
I've tried X_VIDEORAM in lts.conf and XSERVER with auto, i810 and intel
and different X_MODE

I've get same error messages whatever I do.

Thanks,

Regards
Fredrik Jansson, Forsmarks skola, Sweden