[Bug 60791] Display corruption with Radeon driver during boot and on desktop

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=60791

--- Comment #13 from Alex Deucher <alexdeucher at 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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