https://bugs.freedesktop.org/show_bug.cgi?id=84662
--- Comment #22 from Andy Furniss adf.lists@gmail.com --- (In reply to Alexandre Demers from comment #21)
So currently a bit confused - as reported by Christoph in the other bug, it is possible to have good with vanilla mesa/kernel, but apparently for me the "same" mesa can also be bad.
I did try more clean/rebuild cycles including single thread but am currently still bad.
I'm also seeing this behavior while bisecting a different bug on a 7950... Probably related...
It seems like current mesa doesn't build/install properly when patched without being totally clean.
The mesa patch in this bug on an already built tree does provoke -
make[3]: Entering directory '/mnt/sdb1/Src64/Mesa-git/mesa/src/gallium/drivers/radeon' CC r600_buffer_common.lo CCLD libradeon.la
but radeonsi_dri.so is not changed after make install.