[Bug 30686] xf86-video-ati-6.13.2 scrambles 2560x1600 dual link DVI video on Radeon HD 4670

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30686

--- Comment #6 from Alex Deucher <agd5f at yahoo.com> 2010-10-07 13:54:58 PDT ---
(In reply to comment #4)
> Created an attachment (id=39261)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=39261)
> Kernel mode setting xf86-video-ati log

You aren't actually using KMS here, the driver still ends up loading in UMS
mode even though you have the drm loaded in KMS mode: 

[    14.823] (EE) RADEON(0): [dri] RADEONDRIGetVersion failed because of a
version mismatch.
[dri] This chipset requires a kernel module version of 1.17.0,
[dri] but the kernel reports a version of 2.6.0.[dri] If using legacy
modesetting, upgrade your kernel.
[dri] If using kernel modesetting, make sure your module is
[dri] loaded prior to starting X, and that this driver was built
[dri] with support for KMS.
[dri] Disabling DRI.

make sure your ddx was built with KMS support and that the drm is loaded before
starting X.

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