Comment 4 for bug 93509
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| David Gibson (dwg) wrote Re: xorg fails with ati driver with feisty on Apple ppc (post herd5 update) | #4 |
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1b1ed1a
(Get the code!)
I've hit this problem as well on a G5 with Radeon, in Feisty final. Driver package version is 6.6.3-2ubuntu6.
With Ben Herrenschmidt's help, tracked the problem down to an Ubuntu patch which adds some VBE based DDC probing code to the driver as a fallback. That gets triggered on powerpc, and VBE attempts to load int10 which fails horribly, hanging the machine.
Attached patch fixes the problem by disabling the vbe code on powerpc, though I don't know that it's really a correct fix.