Crash when switching to a virtual console

Seriously, I'm loving your bug reports....you seem to have an enviable knack of finding strange issues :) Jason, have fun with this ;)

It's a win-win situation. ;-) Unfortunately I cannot check if those bugs still exist in 0.2.12-0ubuntu1, because I don't know how to initiate the expose/"window overview" mode (clicking the CoF shows the file/app overlay). Any way to do this via a command?

Hmm, good point, there isn't a direct way to do a full expose now (should probably add that as a command-line option for unity binary). Until then, does this happen if your in the app-expose (right-click on an active launcher's icon).

Oh, didn't think of that. Yes, I can still reproduce it:

1.) open gnome-terminal
2.) "pgrep mutter" -> 15360
3.) app-expose
4.) ctrl+alt+f1
5.) "pgrep mutter" -> 15434
6.) ctrl+alt+f7
7.) "pgrep mutter" -> 15434

The only difference is, that mutter doesn't restart every couple of seconds while on the virtual console.

I just tried this, it works fine here. Can I have information about your system. Graphics card, drivers, ram configuration and anything else that might be relevant software wise.

* 2GB RAM, 128MB VRAM
* VGA compatible controller [0300]: nVidia Corporation NV43 [GeForce 6600 GT] [10de:0140] (rev a2)
* nvidia-current BLOB (256.35)

I can reproduce it with a plain maverick install (+nvidia-current), so any other software installations on my current machine should be irrelevant.

Should read "current installation".

FWIW: I just realized mutter consuming 95+% CPU after switching to the virtual console (it already has a new pid at that time). Interrupting it via gdb, it is somewhere in /usr/lib/nvidia-current/libnvidia-glcore.so.256.35 - not that I know if that's to be expected or not.

I'm not able to reproduce it with the Nouveau 3D drivers. They don't play nicely together with Unity (desktop looks garbled), however I was able to run the steps to reproduce the crash but it didn't happen.

With unity 0.2.18-0ubuntu1 I no longer need to initiate the expose mode: _every_ switch to the virtual console triggers the crash, mutter then restarts every 2-5 seconds and causes 90-100% CPU load.

I cannot test with Nouveau since the current version combination doesn't seem to work (I can only see white flashes on session start).

Nouveau works again with Unity 0.2.20-0ubuntu2 (kinda), and I can confirm #10, so it's maybe a problem with Nvidia's BLOB.

Can't reproduce as of the current version of mutter and unity. Tested on Nvidia and GMA945.

Hmm, no, still crashing on nvidia after double-checking

tty is not a default experience on ubuntu. Furthemore, the crash makes mutter respawn in the unity session and don't close any opened application.

I have the same behaviour when switching to a tty and when resuming from a suspend. I use nvidia driver, too.

Re-adjusting the priority, as it's a corner case and affects certain configurations only. Unfortunately, new issues are far more critical.

Unable to observe crash, running in gdb to try to get a handle on it.

GDB doesn't spit out more than that -1 exit code here (nvidia-current and beta BLOB from Nvidia's HP), but .xsession-errors shows the following when switching to a virtual terminal:

(mutter:2683): Clutk-WARNING **: [CheckGLError] GL_INVALID_OPERATION error in File ./ctk-arb-asm-private.c at line: 151
(mutter:2683): Clutk-WARNING **: [CheckGLError] OpenGL Error 1282 in File ./ctk-arb-asm-private.c at line: 151

(mutter:2712): Clutk-CRITICAL **: FBO Error: 36061
(mutter:2712): Clutk-CRITICAL **: FBO Error: 36061
(mutter:2712): Clutk-CRITICAL **: Incomplete render target: 36061
(mutter:2712): Clutk-CRITICAL **: Incomplete render target: 36061
(mutter:2712): Clutk-WARNING **: [CheckGLError] UNKNOWN ERROR in File ./ctk-effect-cache.c at line: 298
(mutter:2712): Clutk-WARNING **: [CheckGLError] OpenGL Error 1286 in File ./ctk-effect-cache.c at line: 298

(mutter:2730): Clutk-WARNING **: [CheckGLError] GL_INVALID_OPERATION error in File ./ctk-effect-cache.c at line: 154
(mutter:2730): Clutk-WARNING **: [CheckGLError] OpenGL Error 1282 in File ./ctk-effect-cache.c at line: 154

(mutter:2733): Clutk-WARNING **: [CheckGLError] GL_INVALID_OPERATION error in File ./ctk-effect-cache.c at line: 154
(mutter:2733): Clutk-WARNING **: [CheckGLError] OpenGL Error 1282 in File ./ctk-effect-cache.c at line: 154

(mutter:2737): Clutk-WARNING **: [CheckGLError] GL_INVALID_OPERATION error in File ./ctk-effect-cache.c at line: 154
(mutter:2737): Clutk-WARNING **: [CheckGLError] OpenGL Error 1282 in File ./ctk-effect-cache.c at line: 154

and it seems the oldest unity(package) bug is fixed with the move to compiz :)

\o/ compiz