Do either of these help?
(as root):
radeonreg regset 0x6564 0xffffffff radeonreg regset 0x6568 0xffffffff radeonreg regset 0x656c 0xffffffff radeonreg regset 0x6570 0xffffffff
or:
radeonreg regset 0x6acc 0x00000000
You can grab radeonreg here: http://cgit.freedesktop.org/~airlied/radeontool/
Do either of these help?
(as root):
radeonreg regset 0x6564 0xffffffff
radeonreg regset 0x6568 0xffffffff
radeonreg regset 0x656c 0xffffffff
radeonreg regset 0x6570 0xffffffff
or:
radeonreg regset 0x6acc 0x00000000
You can grab radeonreg here: cgit.freedeskto p.org/~ airlied/ radeontool/
http://