Created attachment 145480 [details]
dmesg

Created attachment 145481 [details]
xorg

This bisection is kind of a pain, as usual on the 'rebase breakage'.  I had to
start manually to find a "segment" with good enough good/bad data for bisect.
On this bisected segment, amd-staging-drm-next branch, the first bad commit is:

commit 1929059893022a3bbed43934c7313e66aad7346b
Author: Prike Liang <Prike.Liang@amd.com>
Date:   Mon May 27 16:05:50 2019 +0800

    drm/amd/amdgpu: add RLC firmware to support raven1 refresh

    Use SMU firmware version to indentify the raven1 refresh device and
    then load homologous RLC FW.

    Signed-off-by: Prike Liang <Prike.Liang@amd.com>
    Suggested-by: Huang Rui<Ray.Huang@amd.com>
    Reviewed-by: Huang Rui <ray.huang@amd.com>
    Reviewed-by: Evan Quan <evan.quan@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

The commit was fixed by:

commit 0079f82e710caf3e821267917af9517ac0fca83d
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Tue Jun 11 09:45:51 2019 -0500

    drm/amdgpu: return 0 by default in amdgpu_pm_load_smu_firmware
    
    Fixes SI cards running on amdgpu.
    
    Fixes: 1929059893022 ("drm/amd/amdgpu: add RLC firmware to support raven1 refresh")
    Bug: https://bugs.freedesktop.org/show_bug.cgi?id=110883
    Reviewed-by: Evan Quan <evan.quan@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

got some sleep then I noticed I have the wrong kernel log message. My bad.

The kernel module is crashing in DP code. see the call stack in the about to be updated kernel log.

Created attachment 145511 [details]
good kernel log

You need this patch:
https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-next-fixes&id=e0f32f78e51b9989ee89f608fd0dd10e9c230652

Applied the patch on top of amd-staging-drm-next 4a6c7afe7d1acc6d2f4b94d62843c72cbf2c60a5, fixed.

Is still ok to use amd-staging-drm-next or community "testers" should use another one?

I'll add the patch to amd-staging-drm-next as well.

And us "community testers"? Should we be using drm-misc-next-fixes instead of amd-staging-drm-next?

you can use whichever branches you want.

What are the differences then?

(In reply to Sylvain BERTRAND from comment #12)
> What are the differences then?

for my git repo:
- amd-staging-drm-next is our internal integration branch.
- drm-next is all of our new code for the next kernel integrated into airlied's drm-next tree
- drm-fixes is fixes for the current kernel cycle

I seems I should stay on amd-staging-drm-next then.

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/915.