[Bug 60879] X11 can't start with acceleration enabled

https://bugs.freedesktop.org/show_bug.cgi?id=60879

--- Comment #18 from Hristo Venev mustrumr97@gmail.com --- Actually the GPU only works if it has been initialized by fglrx and then the driver is switched to radeon without rebooting. When booting with radeon it doesn't work.

I bruteforced all 24 tiling configs by setting them in evergreen_interpret_tiling in radeonsi_pipe.c and none of them worked for eglgears_screen. They all lead to the same result. The tiling config given to evergreen_interpret_tiling is 0x1023. I have no idea what the (1<<12) bit in it means.