There used to be an old -via driver but it's deprecated in favor or
-openchrome driver (which is the one that currently in used in Ubuntu).
The OpenChrome open source project has a homepage at
http://www.openchrome.org/ where bugs can be filed etc.
I'm not sure if the openchrome driver has support for disabling DRI
(after looking at the code I don't think it does). I think adding a
xorg.conf option to disable DRI for debugging purposes would be a useful
addition though (but ask the openchrome developers, I really don't
know). Doing so should not be that hard actually. It's strange that they
don't have this support yet, maybe I'm missing something...
The openchrome driver code says:
#ifdef XF86DRI
pVia->directRenderingEnabled = VIADRIScreenInit(pScreen);
#endif
The intel driver, for comparision, supports setting "DRI" "false" and to do
that it uses code like this:
pI810->directRenderingDisabled =
!xf86ReturnOptValBool(pI810->Options, OPTION_DRI, TRUE);
...
pI810->directRenderingEnabled = !pI810->directRenderingDisabled;
if (pI810->directRenderingEnabled==TRUE)
pI810->directRenderingEnabled = I810DRIScreenInit(pScreen);
--
Kubuntu 8.10 xserver-xorg-video-openchrome causes crash with VIA chip
K8M890CE/K8N890CE
https://bugs.launchpad.net/bugs/299631
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