glxinfo "Error: couldn't find RGB GLX visual or fbconfig" afer upgrade to xserver-xorg 1.15 (radeon)

[Sebastian F]

I use xserver-xorg-video-radeon (on a Radeon HD 5770) , so far without problems. After the upgrade to xserver-xorg 1.15 kwin wasn't able to switch to it's OpenGL backend anymore and used XRender instead. kwin isn't very informative why GL failed, however running glxinfo shows
Error: couldn't find RGB GLX visual or fbconfig

I don't know where the problem comes from, I don't get any other GLX-related errors

cat /var/log/Xorg.0.log | grep -i glx
[ 17.146] (II) LoadModule: "glx"
[ 17.172] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 17.290] (II) Module glx: vendor="X.Org Foundation"
[ 17.290] (==) AIGLX enabled
[ 17.290] Loading extension GLX
[ 17.676] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[ 17.676] (II) AIGLX: enabled GLX_ARB_create_context
[ 17.676] (II) AIGLX: enabled GLX_ARB_create_context_profile
[ 17.676] (II) AIGLX: enabled GLX_EXT_create_context_es2_profile
[ 17.676] (II) AIGLX: enabled GLX_INTEL_swap_event
[ 17.676] (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control
[ 17.676] (II) AIGLX: enabled GLX_EXT_framebuffer_sRGB
[ 17.676] (II) AIGLX: enabled GLX_ARB_fbconfig_float
[ 17.676] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
[ 17.676] (II) AIGLX: Loaded and initialized r600
[ 17.676] (II) GLX: Initialized DRI2 GL provider for screen 0

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-core 2:1.15.0-1ubuntu3
ProcVersionSignature: Ubuntu 3.13.0-8.27-generic 3.13.2
Uname: Linux 3.13.0-8-generic x86_64
ApportVersion: 2.13.2-0ubuntu2
Architecture: amd64
Date: Sun Feb 9 20:45:48 2014
InstallationDate: Installed on 2014-01-30 (10 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140121.1)
ProcEnviron:
 LANGUAGE=de_DE
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg-server
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastian F (sf-lp)]

I could fix this problem by removing xserver-xorg-video-* except ati/radeon/modesetting.
Now I can reproduce the bug by installing xserver-xorg-video-vesa, so I suppose this is caused somehow by incorrect module initialisation. Looking at Xorg.0.log doesn't give me a hint, though.
I attached Xorg.0.log_noerror (xserver-xorg-video-vesa not installed)
and Xorg.0.log_error (xserver-xorg-video-vesa installed)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Robert Hooker (sarvatt)]

I'm hitting this on intel also, upstream bug regarding this issue

https://bugs.freedesktop.org/show_bug.cgi?id=70706

[Robert Hooker (sarvatt)]

Two patches on the mailing list to address this

http://patchwork.freedesktop.org/patch/20458/
http://patchwork.freedesktop.org/patch/20464/

[Launchpad Janitor (janitor)]

This bug was fixed in the package mesa - 10.1.0~rc1-1ubuntu1

---------------
mesa (10.1.0~rc1-1ubuntu1) trusty; urgency=low

  * First mesa 10.1 release candidate.
  * Refresh egl-platform-mir.patch and drop upstreamed bits.
  * Merge more upstream fixes post rc1.
  * Cherry pick some fixes for GLX fbconfig. (LP: #1278168)
 -- Maarten Lankhorst <email address hidden> Wed, 19 Feb 2014 17:19:12 +0100

[Doug McMahon (mc3man)]

excellent, resolved here issues seen on Intel, now only returning FB configs that have visuals -

Getting matching framebuffer configs
Found 8 matching FB configs.
Getting XVisualInfos
fbconfig id: 0x8a
Chosen visual ID = 0xb0
fbconfig id: 0x8c
Chosen visual ID = 0x45
fbconfig id: 0x90
Chosen visual ID = 0x83
fbconfig id: 0x91
Chosen visual ID = 0xb3
fbconfig id: 0x98
Chosen visual ID = 0xb6
fbconfig id: 0x97
Chosen visual ID = 0xb5
fbconfig id: 0x96
Chosen visual ID = 0xb4
fbconfig id: 0x99
Chosen visual ID = 0xb7