[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Product|xorg                        |DRI
           Assignee|xorg-driver-ati@lists.x.org |dri-devel@lists.freedesktop
                   |                            |.org
            Version|git                         |unspecified
          Component|Driver/AMDgpu               |DRM/AMDgpu
         QA Contact|xorg-team@lists.x.org       |

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #2 from Alex Deucher <alexdeucher@gmail.com> ---
When you say turn them off/on, do you mean via software (e.g., dpms) or via the
switch on the monitor?

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #3 from Öyvind Saether <oyvinds@everdot.org> ---
(In reply to Michel Dänzer from comment #1)
> Can you bisect?
> P.S. FYI, this is what's called an oops, not a panic.

oops, then. yes I now know how to bisect. I can.

(In reply to Alex Deucher from comment #2)
> When you say turn them off/on, do you mean via software (e.g., dpms) or via
> the switch on the monitor?

I used the actual power button on the monitors that have them and the stupid
joystick thing on the third monitor (works like a button) when this first
happens but I just found that it doesn't matter, triggered it on 4.18.9 with
dpms too.

On 4.18.9:
> set xscreensaver to immediately turn monitors off with dpms
> lock screen
> wait for monitors go into suspend
> press button on keyboard
> monitors don't come back on, system freeze
will attach same-problem-4.18.9.txt with that one. 4.18.5 is fine. I notice
there was a lot of amdgpu changes between 4.18.7 and 4.18.8 in the log. I have
used 4.19 git kernels for some time and this didn't happen to me until 4.19rc4
but that could simply be because I didn't turn off the monitors(???). 

bisecting will take time.

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #4 from Öyvind Saether <oyvinds@everdot.org> ---
Created attachment 141716
  --> https://bugs.freedesktop.org/attachment.cgi?id=141716&action=edit
Found that 4.18.9 has the same problem.

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

Öyvind Saether <oyvinds@everdot.org> changed:

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

--- Comment #5 from Öyvind Saether <oyvinds@everdot.org> ---
After 1 day, 12:48 with 4.19.0-rc5-ChaeKyung-April I've yet to trigger this and
I've tried. I don't see why it would magically be fixed but I can't really
provide any useful information. I could between rc1 and rc3 but I couldn't
trigger it too reliably and do an accurate bisect. Might as well re-open if I
it happens again and I can provide any actual useful information.

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #6 from Öyvind Saether <oyvinds@everdot.org> ---
Created attachment 141836
  --> https://bugs.freedesktop.org/attachment.cgi?id=141836&action=edit
Turned monitors off, went out for some hours, came back, turned them on,
picture didn't come on montiors, instead sleep mode, PC froze

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

Öyvind Saether <oyvinds@everdot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|FIXED                       |---
             Status|RESOLVED                    |REOPENED

--- Comment #7 from Öyvind Saether <oyvinds@everdot.org> ---
Looks like this is still a problem with 4.19.0-rc6-ChaeKyung-April. Happened
when turning monitors off and leaving for hours and coming back & turning them
on again.

If that what's required to make sure this triggers then bisecting will take
ages. Last time I tried I got a irrelevant result which is probably because it
doesn't happen if I turn them off and very soon turn them on again. Also didn't
seem to happen with 4.19.0-rc5 but I didn't try turning them on and leaving for
a few hours and turning them on when I got the impression that one works fine.
Perhaps it doesn't.

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #8 from Öyvind Saether <oyvinds@everdot.org> ---
https://bugzilla.redhat.com/show_bug.cgi?id=1618950 looks like a similar error
https://bugzilla.redhat.com/attachment.cgi?id=1476793

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #9 from Öyvind Saether <oyvinds@everdot.org> ---
Created attachment 141939
  --> https://bugs.freedesktop.org/attachment.cgi?id=141939&action=edit
Tried kernel 4.19.0-rc7 with Xorg Option "DPMS" "Disable", still happened

Kernel 4.19.0-rc7 and setting Xorg Option "DPMS" "Disable" in the X
configuration file (it's actually disabled according to xset) didn't help,
turned off monitors, turned them back on later, X was frozen but this time it
was possible to ssh into the box and dmesg>amdgpu-fail.txt. of course X
couldn't be stopped or restarted at that point. 

since it says mod_freesync_set_user_enable+0x11f/0x150 somewhere I've turned
freesync off on the one display that supports it ASUS VP28U. The other two are
ASUS PB27U.

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #10 from Öyvind Saether <oyvinds@everdot.org> ---
I turned off freesync on one monitor and have been using

Section "Extensions"
    Option      "DPMS" "Disable"
EndSection

in /etc/X11/xorg.conf.d/20-amdgpu.conf which appears to prevent this from
happening. Tried commenting "DPMS" "Disable" on kernel 4.19.2-ChaeKyung to see
what would happen. The box froze when I turned monitors off for some time and
turned them back on again. This is clearly still a bug in 4.19.2 which is
unfortunate since that kernel is a LTS kernel.

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #11 from Öyvind Saether <oyvinds@everdot.org> ---
Created attachment 143199
  --> https://bugs.freedesktop.org/attachment.cgi?id=143199&action=edit
This is still a problem with kernel 4.20.3, happens sometime when turning
multiple monitors on at the same time

turn 3 monitors on after they've been of for a while and this bug likely
happens and X is frozen. Can still ssh in. A workaround seems to be to turn one
monitor on and wait a bit and then turn on another and wait a bit until turning
on the third.

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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https://bugs.freedesktop.org/show_bug.cgi?id=108037

--- Comment #12 from Öyvind Saether <oyvinds@everdot.org> ---
Created attachment 143286
  --> https://bugs.freedesktop.org/attachment.cgi?id=143286&action=edit
Kernel 5.0.0-rc5 still has this problem

[27295.165873] Call Trace:                                                      
[27295.165917]  ? dc_validate_stream+0x5d/0x90 [amdgpu]                         
[27295.165921]  ? radix_tree_delete_item+0x69/0xc0
[27295.165958]  dc_stream_release+0x28/0x50 [amdgpu]
[27295.165997]  dc_resource_state_destruct+0x4d/0x70 [amdgpu]
[27295.166035]  dc_state_free+0x15/0x20 [amdgpu]
[27295.166076]  dm_atomic_destroy_state+0x1c/0x30 [amdgpu]
[27295.166089]  drm_atomic_state_default_clear+0x201/0x280 [drm]
[27295.166099]  __drm_atomic_state_free+0x13/0x50 [drm]
[27295.166105]  drm_atomic_helper_set_config+0x5a/0x90 [drm_kms_helper]
[27295.166115]  drm_mode_setcrtc+0x191/0x670 [drm]
[27295.166148]  ? amdgpu_cs_wait_ioctl+0x92/0x160 [amdgpu]
[27295.166157]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[27295.166165]  drm_ioctl_kernel+0xa9/0xf0 [drm]
[27295.166174]  drm_ioctl+0x207/0x3c0 [drm]
[27295.166183]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[27295.166213]  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[27295.166216]  do_vfs_ioctl+0xa5/0x620
[27295.166218]  ksys_ioctl+0x60/0x90
[27295.166219]  __x64_sys_ioctl+0x16/0x20
[27295.166221]  do_syscall_64+0x55/0x150
[27295.166224]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[27295.166226] RIP: 0033:0x7f78fac8909b

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[Bug 108037] Turning monitors off and on again makes the kernel panic and system freeze

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[-- Attachment #1.1: Type: text/plain, Size: 541 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=108037

Öyvind Saether <oyvinds@everdot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #13 from Öyvind Saether <oyvinds@everdot.org> ---
I don't have this problem with 5.1.0-rc6.

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