https://bugs.freedesktop.org/show_bug.cgi?id=99353
--- Comment #20 from Michel Dänzer michel@daenzer.net --- (In reply to Bong Cosca from comment #19)
If I may add, compositing works by setting DRI_PRIME=1 with KMS and AccelMethod "none" despite having only the APU.
AccelMethod "none" means Xorg does all its rendering using the CPU. Only direct rendering clients may use the GPU in this setup. Does e.g.
glxgears -info
work and display correctly? If so, please attach its terminal output.