On 15/03/17 08:44 AM, Riccardo Mottola wrote: > Michel Dänzer wrote: >>> Can you provide the two /boot/config-4.8* files? If you attach them >>> > directly, maybe compress them e.g. with gzip to avoid running into >>> > mailing list size limits. >> Or maybe just attach the output of diff -u for the two files. > > attached (well, I forgot unified, but it is readable enough I hope) > > Could CONFIG_IO_STRICT_DEVMEM=y be the issue?
Looks like that's it. According to the description of that option, it prevents userspace from accessing I/O memory ranges which are already claimed by a kernel driver. I.e. you have to choose whether you want to let the kernel atyfb driver or the Xorg mach64 driver access the GPU's MMIO register aperture. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer
