I have just upgraded the kernel on my 64-bit Ubuntu 13.04 to 3.8.0-22-generic. Now my unity panel, dash and launcher are missing and graphics are running really slowly. Compiz and openGL seem to be failing. I've tried reinstalling Catalyst 13.4 but that does not fix it. I also tried these commands:
dconf reset -f /org/compiz/ unity --reset-icons &disown
This happened once before and I think the above commands worked, but I'm not having and success this time.
The last command gives these errors:
 2616 compiz (core) - Info: Loading plugin: core compiz (core) - Info: Starting plugin: core unity-panel-service: no process found compiz (core) - Error: Another window manager is already running on screen: 0 compiz (core) - Info: Stopping plugin: core compiz (core) - Info: Unloading plugin: core unity --reset-ico (process:2656): GLib-CRITICAL **: g_slice_set_config: assertion `sys_page_size == 0' failed
UPDATE 1:30pm EST 25 May 2013: Well today I just started up as normal and everything is working; my launcher icons reset to default, which I am guessing was the result of the second command above. Weird. Florian, here is the output of the two commands you asked me to run (now after it seems to be working):
$ /usr/lib/nux/unity_support_test -p OpenGL vendor string: ATI Technologies Inc. OpenGL renderer string: AMD Radeon HD 6670 OpenGL version string: 4.2.12217 Compatibility Profile Context 12.104 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes
$ sudo -- lshw -C display *-display description: VGA compatible controller product: Turks XT [Radeon HD 6670] vendor: Advanced Micro Devices [AMD] nee ATI physical id: 0 bus info: pci@0000:03:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=fglrx_pci latency=0 resources: irq:54 memory:d0000000-dfffffff memory:fe9e0000-fe9fffff ioport:e000(size=256) memory:fe9c0000-fe9dffff
UPDATE 1 June 2013: I had the same problem today after upgrading to kernel 3.8.0-23-generic and was able to get things back by running the first command only, then reinstalling AMD Catalyst 13.4 once again.
Is there any way to prevent having to do this with each kernel update? Is this an Ubuntu bug or an AMD Catalyst bug?