[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 #13 from Darren D. <ysxikrhn at vomoto.com> ---
(In reply to Christian König from comment #12)

> 
> 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.

Another update: I think I'm either finished or close to finished--shouldn't
bisect say which of the revisions is bad once i get down to 0, though?

Bisecting: 0 revisions left to test after this (roughly 0 steps)
[bdcddf95e82b1c4e370fc1196b1f4f50f775dab4] Backmerge v4.1-rc4 into into
drm-next

Please see below for output of "git bisect log' listing the commits bisected,
following your advice about telling git the non-bootable revisions were bad and
moving on until I found one that compiled a bootable kernel. Any bisects that
say bad after 81663016dbfd53e29d1b5c5ddbc9b12ae1d66474 are marked bad not
because of lack of accel, but because they didn't boot up. I was able to
locate, however, the next bootable kernel after the 'initial ramdisk" boot
failures started. Commit ID 744b058827b3db9a4f6027522dd9c73a208c2d31, and it
both booted and had functional accelerated OpenGL on the videocard.

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
# bad: [992839ad64f21ff4e5ed0a71691098ab7cfcb9dc] drm/amdkfd: Add static
user-mode queues support
git bisect bad 992839ad64f21ff4e5ed0a71691098ab7cfcb9dc
# bad: [ff0b187f92f61503c8af67d3dc5e6e91fbe2f9cc] drm/i915: Add a space after
', ' and don't capitalize mid-sentence
git bisect bad ff0b187f92f61503c8af67d3dc5e6e91fbe2f9cc
# bad: [f3e06f1156f1adf17dc44144ad3b774c2d414e47] drm/i915/gtt: Fix the
boundary check for vm area
git bisect bad f3e06f1156f1adf17dc44144ad3b774c2d414e47
# good: [744b058827b3db9a4f6027522dd9c73a208c2d31] drm/atomic: remove
duplicated assignment of old_plane_state
git bisect good 744b058827b3db9a4f6027522dd9c73a208c2d31
# bad: [b6e742f652791919ce5c8e05a1d664bcbc5111a6] drm/i915: Be optimistic about
future display engines having 7 WM levels
git bisect bad b6e742f652791919ce5c8e05a1d664bcbc5111a6
# good: [91d9f9856f91c82ac6289a0fff65dd12cfa07e34] Merge tag
'drm-amdkfd-next-2015-05-19' of git://people.freedesktop.org/~gabbayo/linux
into drm-next
git bisect good 91d9f9856f91c82ac6289a0fff65dd12cfa07e34
# bad: [7e35ab88d8ec652803eb2965c00e3ed9967c4f9d] drm/i915: Fix typo in
intel_runtime_pm.c
git bisect bad 7e35ab88d8ec652803eb2965c00e3ed9967c4f9d
# bad: [5e024f31be3734aed0a5ead7002de16029ec3bc1] drm/i915: Remove unused
variable from i915_gem_mmap_gtt
git bisect bad 5e024f31be3734aed0a5ead7002de16029ec3bc1

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