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)
** Attachment added: "xserver-xorg-video-vesa installed, produces glxinfo error" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1278168/+attachment/3975733/+files/Xorg.0.log_error -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1278168 Title: glxinfo "Error: couldn't find RGB GLX visual or fbconfig" afer upgrade to xserver-xorg 1.15 (radeon) Status in “xorg-server” package in Ubuntu: New Bug description: 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1278168/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
