[Bug 534662]

[Lxnay-o]

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 issue.

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Title:
  [RV635] No hardware acceleration on ATI Radeon 3650 HD using 'radeon'
  driver

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[Bug 534662]

[Lxnay-o]

This is becoming a problem for many people and distros now that KMS is 
mandatory.
On Linux, if CONFIG_DRM_RADEON_KMS is not enabled, X loads (through the DRI 
interface I suppose) radeon.ko correctly but X initialization fails as pointed 
out 3 years ago by Brice Goglin.

Otoh, forcing CONFIG_DRM_RADEON_KMS=y in distributed kernels makes fglrx
users' life really hard. So, what are distributors supposed to do in
your opinion? Do we really have to consider fglrx and radeon to be
mutually exclusive at package manager level? That would be suboptimal as
well.

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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/534662

Title:
  [RV635] No hardware acceleration on ATI Radeon 3650 HD using 'radeon'
  driver

To manage notifications about this bug go to:
https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/534662/+subscriptions

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