I can confirm this bug, that I've seen text from other processes in the corrupted tooltips, and that Chromium + LIBGL_ALWAYS_SOFTWARE=1 does not show corruption. With LIBGL_ALWAYS_SOFTWARE=1, in Chromium ( chrome://gpu ) I get "Hardware Accelerated" for all items under "Graphics Feature Status", and GL_RENDERER = "Gallium 0.4 on llvmpipe (LLVM 3.6, 128 bits)". BTW, I have a Llano APU: OpenGL renderer string: Gallium 0.4 on AMD SUMO.