https://bugs.freedesktop.org/show_bug.cgi?id=87856
--- Comment #9 from kristof cdenatale3@gmail.com --- Hi Alex,
Workaround progress : delete xorg.conf; Why ? According radeon man page : http://manpages.debian.org/cgi-bin/man.cgi?sektion=4&query=radeon&ap... Option "AccelMethod" "string" Chooses between available acceleration architectures. Valid values are EXA (for pre-TAHITI GPUs) and glamor (for R300 or higher). The default is glamor as of TAHITI, otherwise EXA.
By checking my Xorg.0.log, I realized that "EXA" submodule is loaded instead "glamor" ... (noticed in my workaround firmware non-free installed + mesalib not patched) Since my gpu is a R300 (RV380-X600) family submodule should be "glamor", right or mistake from me due to misunderstanding something ?
Regards and have a nice day,
Kristof