[Bug 25607] drmCheckModesettingSupported fails if X loaded radeon modeset=1 just before

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Jul 29 13:26:56 PDT 2012


Fabio Erculiani <lxnay at gentoo.org> changed:

           What    |Removed                     |Added
             Status|RESOLVED                    |REOPENED
         Resolution|WONTFIX                     |

--- Comment #6 from Fabio Erculiani <lxnay at gentoo.org> 2012-07-29 13:26:56 PDT ---
Userspace is not a problem here, many distributions have GL implementation
switch tools already.

I have users reporting that 6.14.4 suffers from the problem reported here.
Basically, radeon.ko is loaded by X with KMS enabled, (CONFIG_DRM_RADEON_KMS=n
but modprobe.d/ contains "options radeon modeset=1") but X fails to start with:

(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 2.16.0.[dri] Make sure your module is
loaded prior to starting X, and
[dri] that this driver was built with support for KMS.
[dri] Aborting.

The problem is that xf86-video-ati is built with KMS and radeon.ko loads with
modeset=1 but still, X fails to load due to the initialization (bug?) issue
reported by the OP. Restarting X fixes the problem. I do think there is
something to fix here and it would be nice to at least fix this chicken/egg

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