[Bug 92858] AMD Radeon GPU Acceleration Disabled Under Kernels 4.2.x and later versions

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92858

--- Comment #12 from Christian König <deathsimple at vodafone.de> ---
(In reply to Darren D. from comment #11)
> (In reply to Christian König from comment #10)
> And no, I didn't actually type
> all the commit tags below out, I simply copied and pasted the output from
> git bisect log' into the comment section.

Sorry, didn't know that git bisect log was so noisy.

> 
> git bisect start
> # good: [b953c0d234bc72e8489d3bf51a276c5c4ec85345] Linux 4.1
> git bisect good b953c0d234bc72e8489d3bf51a276c5c4ec85345
> # bad: [d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754] Linux 4.2-rc1
> git bisect bad d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754
> # good: [4570a37169d4b44d316f40b2ccc681dc93fedc7b] Merge tag 'sound-4.2-rc1'
> of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
> git bisect good 4570a37169d4b44d316f40b2ccc681dc93fedc7b
> # bad: [8d7804a2f03dbd34940fcb426450c730adf29dae] Merge tag
> 'driver-core-4.2-rc1' of
> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
> git bisect bad 8d7804a2f03dbd34940fcb426450c730adf29dae
> # good: [3d9f96d850e4bbfae24dc9aee03033dd77c81596] Merge tag 'armsoc-dt' of
> git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
> git bisect good 3d9f96d850e4bbfae24dc9aee03033dd77c81596
> # bad: [692a59e696afe1a4e777d0e4359325336ab0ad89] drm/amdgpu: remove
> AMDGPU_CTX_OP_STATE_RUNNING
> git bisect bad 692a59e696afe1a4e777d0e4359325336ab0ad89
> # good: [81663016dbfd53e29d1b5c5ddbc9b12ae1d66474] drm/amdkfd: Add module
> parameter of send_sigterm
> git bisect good 81663016dbfd53e29d1b5c5ddbc9b12ae1d66474
> 
> Once again, the next kernel I built after telling git the revision starting
> with '8166301dbfd..' was good, and with about 172 commits left to bisect,
> failed to boot. It got stuck at 'loading initial ramdisk,' the same problem
> as I'd been running into during my previous builds. At least by doing it all
> over again I've confirmed it's nothing about the source I'm using, but I'm
> in the same position still. Is it actually ok to skip revisions until the
> kernel I built at least boots?

In this case I would suggest to just say git bisect bad until you find a kernel
that boots again and then continue till you either have the commit which causes
the radeon problem or the boot problem.

If it's the radeon problem you find first than we can just continue analyzing
it.

And if it's the boot lockup problem then please note the commit hash and I will
try to figure out what's going wrong here. This way you should be able to
finally dig up what's the issue with radeon.

Thanks for sticking with that.

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