https://bugzilla.kernel.org/show_bug.cgi?id=60791
--- Comment #13 from Alex Deucher <alexdeuc...@gmail.com> ---
Can you revert parts of the patch to find out which element is causing the
problem. E.g., try:
/* reset data block */
// ctx->data_block = 0;
and see if that helps, then:
/* reset divmul */
// ctx->divmul[0] = 0;
ctx->divmul[1] = 0;
etc.
Additionally, can you dump the display registers in the working and non-working
states using radeonreg (http://cgit.freedesktop.org/~airlied/radeontool/)?
(as root)
boot with broken kernel:
./radeonreg regs dce3 > broken.regs
boot with working kernel:
./radeonreg regs dce3 > working.regs
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