ubuntu-x-swat team mailing list archive

[Martin Olsson <mnemo@xxxxxxxxxx>]

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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