https://bugs.freedesktop.org/show_bug.cgi?id=100306

--- Comment #32 from MirceaKitsune sonichedgehog_hyperblast00@yahoo.com --- Thought I'd also post another detail that might be useful, I'm not sure how much it relates to the freeze but better be safe than sorry; I have the following two environment variables added to my ~/.profile file, which basically tell Mesa to post errors to a log file:

export MESA_DEBUG=1 export MESA_LOG_FILE=/home/mircea/.mesa_stderr

There's one reoccurring line which keeps getting printed in there. It's added periodically with no side effects, but I imagine it could still have some relation to the trigger of the freeze:

Mesa: User error: GL_INVALID_OPERATION in glTexSubImage2D(invalid texture image)