Comment # 2 on bug 74784 from Bruno Jiménez

Yes, I am using the llvm backend (you mean the --enable-r600-llvm-compiler
configure option, don't you? )

I will compile a mesa package without that option, and tonight I will see if it
continues to happend and I will attach the xorg and dmesg logs.

And yes, it is a regression, although the best date I can give as not happening
is the 29th of December.

If disabling the llvm backend doesn't help, I will start bisecting.

Thanks for all!