[Bug 105833] RX Vega 56 hangs immediately after start gdm

[Bug 105833] RX Vega 56 hangs immediately after start gdm

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=105833

            Bug ID: 105833
           Summary: RX Vega 56 hangs immediately after start gdm
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: mikhail.v.gavrilov@gmail.com

Created attachment 138461
  --> https://bugs.freedesktop.org/attachment.cgi?id=138461&action=edit
dmesg

RX Vega 56 hangs immediately after start gdm

kernel: 4.16.0-rc7-git7b225300c716
mesa: 18.1.0-0.11.git6179a87
llvm: 7.0.0-0.1.r326462

Demonstration: https://youtu.be/uvsg36d9tZk

[   23.005522] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout,
last signaled seq=1, last emitted seq=5
[   23.005645] [drm] GPU recovery disabled.
[   82.427656] sysrq: SysRq : Show Blocked State
[   82.427950]   task                        PC stack   pid father
[  121.856551] sysrq: SysRq : Show Blocked State
[  121.856576]   task                        PC stack   pid father
[  257.886375] sysrq: SysRq : Show Blocked State
[  257.886399]   task                        PC stack   pid father

This is very similar to previous bugs:
[1] https://bugs.freedesktop.org/show_bug.cgi?id=105317
[2] https://bugs.freedesktop.org/show_bug.cgi?id=104001
but not needed make any action for hung occurs. It happens immediately after
start  graphic mode in Linux.


1. install Fedora 27.
https://download.fedoraproject.org/pub/fedora/linux/releases/27/Workstation/x86_64/iso/Fedora-Workstation-Live-x86_64-27-1.6.iso
2. install latest MESA and LLVM
https://copr.fedorainfracloud.org/coprs/che/mesa/
3. build and install staging kernel with latest amdgpu driver
$ git clone git://people.freedesktop.org/~agd5f/linux --branch
drm-next-4.17-wip
$ cd linux
$ make clean && make bzImage && make modules
# make modules_install && make install

Reproducing issue:
1. Try to boot computer with the newly builded kernel.

Symptoms:
1. The system stop to respod.
2. All the LEDs on the video card showing the load start to glow.
3. The turbine on the video card starts to make a lot of noise.

In dmesg appears follow lines:
[drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, last signaled
seq=1, last emitted seq=5
[drm] GPU recovery disabled.

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[Bug 105833] RX Vega 56 hangs immediately after start gdm

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=105833

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #1 from Martin Peres <martin.peres@free.fr> ---
-- 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/340.

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