[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

            Bug ID: 109246
           Summary: HDMI connected monitors fail to sleep and instead turn
                    back on when amdgpu.dc=1
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: t00m4nyerr0rs@gmail.com

Original launchpad thread:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1790861

  Overview:
When my computer tries to suspend my monitors after a period of idleness,
they'll suspend for a few seconds before waking back up.

  Steps to Reproduce:
1) Have a monitor attached over HDMI.
2) Set screen energy saving (in Plasma 5) to 1 minute.
3) After 1 minute has passed, the monitor will try to enter sleep mode. It will
fail and turn back on.
4) The monitor will continue to attempt to enter sleep mode every minute until
interrupted by the user.

  Actual Results:
The monitors turn back on a few seconds after entering sleep mode.

  Expected Results:
The monitors stay in sleep mode.

  Additional Information:
While I have two monitors, this issue is only triggered when one is connected
using HDMI. Connecting only one monitor using HDMI will trigger the problem.
Connecting either one using DVI does not trigger the problem. 
I am unable to test if DisplayPort triggers the problem, as I have no
compatible monitors.
Setting the kernel parameter amdgpu.dc=0 does not cause the problem to trigger.

I haven't confirmed if the other affected users in the launchpad thread are
using HDMI, so I'm only reporting my experience.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #1 from tme <t00m4nyerr0rs@gmail.com> ---
Forgot to mention that I have tested and reproduced this bug on kernel versions
4.18, 4.20, and 5.0-rc1.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #2 from fin4478@hotmail.com ---
I am tired to automatic monitor sleep problems and made a launcher to manually
sleep the monitor.

#! /bin/bash

sleep 5s
xset dpms force standby

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |harry.wentland@amd.com,
                   |                            |nicholas.kazlauskas@amd.com

--- Comment #3 from Michel Dänzer <michel@daenzer.net> ---
Please attach the output of dmesg and the Xorg log file, captured after
reproducing the problem.

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--- Comment #4 from fin4478@hotmail.com ---
Use the DVI connector then. The HDMI development has a low priority. Developers
use the display port connector and it is computer oriented while HDMI is for
consumer electronics. I did sold my HDMI only monitor because of this. The ASUS
VP28UQG monitor is really nice and freesync works.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #5 from Alex Deucher <alexdeucher@gmail.com> ---
Do you have an option in your monitor's menu to poll inputs?  If so can you
disable it?  Some monitors poll inputs which sometimes causes the hpd pin to
fire which looks like a hotplug event to the driver.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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--- Comment #6 from tme <t00m4nyerr0rs@gmail.com> ---
Created attachment 143014
  --> https://bugs.freedesktop.org/attachment.cgi?id=143014&action=edit
Xorg log

I reproduced the problem at about 210 in the log.

Unfortunately I don't see an option to poll inputs in my monitor.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #7 from tme <t00m4nyerr0rs@gmail.com> ---
Created attachment 143015
  --> https://bugs.freedesktop.org/attachment.cgi?id=143015&action=edit
dmesg output

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #8 from Michel Dänzer <michel@daenzer.net> ---
>From the Xorg log file:

[   212.439] (II) AMDGPU(0): Allocate new frame buffer 1440x900
[   212.439] (II) AMDGPU(0):  => pitch 6144 bytes
[   212.639] (II) AMDGPU(0): Allocate new frame buffer 3360x1080
[   212.639] (II) AMDGPU(0):  => pitch 14336 bytes

This does look like there are hotplug events, and the HDMI output is considered
disconnected for a moment.

(In reply to Alex Deucher from comment #5)
> Some monitors poll inputs which sometimes causes the hpd pin to fire which
> looks like a hotplug event to the driver.

Any idea why this seems to only cause trouble with DC though?

(I was seeing similar symptoms with DC and an HDMI connection with Kaveri, I
reported it to the DC developers internally a while ago; it's one reason why
I'm currently not using DC on this machine)

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #9 from tme <t00m4nyerr0rs@gmail.com> ---
I've tested some more kernels, all from
https://kernel.ubuntu.com/~kernel-ppa/mainline/.

Setting amdgpu.dc=1 on 4.15.18 and 4.16.18 does not reproduce the problem. It
does, however, reproduce on 4.17.19.

Also, I now believe my HDMI monitor may have polling, as it cycles through each
input once when it no longer detects a signal.

Please let me know if there is anything else I can help with.

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--- Comment #10 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Michel Dänzer from comment #8)
> 
> This does look like there are hotplug events, and the HDMI output is
> considered disconnected for a moment.

When the monitor enters dpms, it starts polling inputs so it can light up
whatever input gets connected without the user having to manually select the
input.  This can cause havoc with drivers sometimes.

> 
> (In reply to Alex Deucher from comment #5)
> > Some monitors poll inputs which sometimes causes the hpd pin to fire which
> > looks like a hotplug event to the driver.
> 
> Any idea why this seems to only cause trouble with DC though?

DC handles both short and long pulses while I think the non-DC code only
handles long pulses.  IIRC, the only difference is the length of the pulse and
I think the register values used to determine the pulse length are tuned
slightly differently in DC to deal with other problematic monitors.  I suspect
tuning those settings would fix the issue, but I don't know if it would break
other things.

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--- Comment #11 from Nathan Patera <are52tap@gmail.com> ---
I have the same exact bug as a secondary confirmation of this bug. I am
currently using kernel version 4.15.0-42-generic with an RX 580

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #12 from Michel Dänzer <michel@daenzer.net> ---
(In reply to tme from comment #9)
> Setting amdgpu.dc=1 on 4.15.18 and 4.16.18 does not reproduce the problem.
> It does, however, reproduce on 4.17.19.

Can you bisect between 4.16.18 and 4.17.19?

(I see some HPD filtering related changes between them, Nicholas / Harry maybe
you can take a look if anything jumps out?)

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--- Comment #13 from Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> ---
(In reply to Michel Dänzer from comment #12)
> (In reply to tme from comment #9)
> > Setting amdgpu.dc=1 on 4.15.18 and 4.16.18 does not reproduce the problem.
> > It does, however, reproduce on 4.17.19.
> 
> Can you bisect between 4.16.18 and 4.17.19?
> 
> (I see some HPD filtering related changes between them, Nicholas / Harry
> maybe you can take a look if anything jumps out?)

I haven't had a chance to look into the HPD changes yet, but we haven't seen
this bug occur with our DPMS tests so I'm guessing that it's monitor specific.
A system environment with Ubuntu/Plasma/xf86-video-amdgpu seems pretty standard
at least.

A bisection point on amd-staging-drm-next would certainly help narrow this
down.

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--- Comment #14 from krutoileshii@gmail.com ---
I am actually experiencing simar issues. Two monitors using displayport to hdmi
cable to connect Vega 64 to the monitors. No xorg logs as it's under Wayland
but more than happy to test any suggestions. 

https://bbs.archlinux.org/viewtopic.php?id=243452

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--- Comment #15 from tme <t00m4nyerr0rs@gmail.com> ---
I've been attempting to perform a bisect on an off for a while now with no
success. The main problem I'm running into is this error when trying to
compile.

  RELOCS  arch/x86/boot/compressed/vmlinux.relocs
Unsupported relocation type: R_X86_64_PLT32 (4)
make[4]: *** [arch/x86/boot/compressed/Makefile:123:
arch/x86/boot/compressed/vmlinux.relocs] Error 1
make[3]: *** [arch/x86/boot/Makefile:112: arch/x86/boot/compressed/vmlinux]
Error 2
make[2]: *** [arch/x86/Makefile:299: bzImage] Error 2
make[1]: *** [scripts/package/Makefile:96: bindeb-pkg] Error 2
make: *** [Makefile:1386: bindeb-pkg] Error 2

I've tried searching for solutions for this problem, but I haven't found
anything. It occurs when I run "make -j4 deb-pkg" and "make bzImage". If anyone
can help me solve this, I'd be happy to start bisecting again.

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--- Comment #16 from krutoileshii@gmail.com ---
Found a partial solution that seems to address the instant wake up under
Wayland.

It seems that by default, the AOS2770SHE starts polling once display
disconnects on one of its inputs. This seems to cause the actual system to wake
up. However, this was not an issue before and used to function with no problems
previously. It seems that something in amgdpu DC code changed that is picking
up these polling requests.

To get the monitors to sleep properly, I did the following:

Set "Input Select":  Auto -> HDMI1
Set "DDC/CI": Yes -> No

Now the display sleeps as expected and wakes up with no issues. Still would
like to know what changed to cause this to appear. I usually need to have the
inputs set to Auto as I have a docking station plugged into the monitors for
the work laptop.

Also amdgpu.dc=0 hands the system and it's only becomes accessable through ssh.
However no errors are present in any logs. But I'll file a different bug once I
nail it down to a specific component.

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--- Comment #17 from krutoileshii@gmail.com ---
I think this could be related to this commit
b0c4e977522c34e20ad54ff4ca104129a7cfdeca which removed the delay.: Below
patchset seems to be the likely cause as it touches the HDMI portion.

https://lists.freedesktop.org/archives/amd-gfx/2018-February/018956.html

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--- Comment #18 from krutoileshii@gmail.com ---
The function that sets the delay (dc_link_enable_hpd_filter), doesn't seem to
be called anywhere as far as I can see. But I'm a complete noob here so might
be missing something. (In reply to krutoileshii from comment #17)
> I think this could be related to this commit
> b0c4e977522c34e20ad54ff4ca104129a7cfdeca which removed the delay.: Below
> patchset seems to be the likely cause as it touches the HDMI portion.
> 
> https://lists.freedesktop.org/archives/amd-gfx/2018-February/018956.html

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--- Comment #19 from krutoileshii@gmail.com ---
(In reply to tme from comment #15)
> I've been attempting to perform a bisect on an off for a while now with no
> success. The main problem I'm running into is this error when trying to
> compile.
> 
>   RELOCS  arch/x86/boot/compressed/vmlinux.relocs
> Unsupported relocation type: R_X86_64_PLT32 (4)
> make[4]: *** [arch/x86/boot/compressed/Makefile:123:
> arch/x86/boot/compressed/vmlinux.relocs] Error 1
> make[3]: *** [arch/x86/boot/Makefile:112: arch/x86/boot/compressed/vmlinux]
> Error 2
> make[2]: *** [arch/x86/Makefile:299: bzImage] Error 2
> make[1]: *** [scripts/package/Makefile:96: bindeb-pkg] Error 2
> make: *** [Makefile:1386: bindeb-pkg] Error 2
> 
> I've tried searching for solutions for this problem, but I haven't found
> anything. It occurs when I run "make -j4 deb-pkg" and "make bzImage". If
> anyone can help me solve this, I'd be happy to start bisecting again.

Any luck bisecting?

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--- Comment #20 from Utku Helvacı (tuxutku) <proje.pdf@outlook.com> ---
(In reply to tme from comment #15)
> I've been attempting to perform a bisect on an off for a while now with no
> success. The main problem I'm running into is this error when trying to
> compile.
> 
>   RELOCS  arch/x86/boot/compressed/vmlinux.relocs
> Unsupported relocation type: R_X86_64_PLT32 (4)
> make[4]: *** [arch/x86/boot/compressed/Makefile:123:
> arch/x86/boot/compressed/vmlinux.relocs] Error 1
> make[3]: *** [arch/x86/boot/Makefile:112: arch/x86/boot/compressed/vmlinux]
> Error 2
> make[2]: *** [arch/x86/Makefile:299: bzImage] Error 2
> make[1]: *** [scripts/package/Makefile:96: bindeb-pkg] Error 2
> make: *** [Makefile:1386: bindeb-pkg] Error 2
> 
> I've tried searching for solutions for this problem, but I haven't found
> anything. It occurs when I run "make -j4 deb-pkg" and "make bzImage". If
> anyone can help me solve this, I'd be happy to start bisecting again.

Hey i am bisecting the same commits for another problem and i am getting the
same error: https://bugzilla.kernel.org/show_bug.cgi?id=201077#c26

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #21 from tme <t00m4nyerr0rs@gmail.com> ---
I've tried to revert commit b0c4e977522c34e20ad54ff4ca104129a7cfdeca but I
haven't been able to successfully compile afterwards, running into the same
issue as before. Setting it as the head still causes the bug to replicate when
amdgpu.dc=1, however.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #22 from valentinesd@gmail.com ---
This is happening to me as well.

RX570 w/ Acer H236HL Dual head, both inputs HDMI

I didn't have this issue with the same monitors and an nvidia card, so it seems
specific to the amdgpu driver.

The monitors seem to lose signal (which is normal), then perform an auto input
cycle which then wakes the monitors back up.  The backlight will come on and
display the mouse cursor on a black screen.

I experience this with both Xorg and Wayland.

Unfortunately I can't disable auto input on my monitors, as the previous
workaround suggests.  Just disabling DDC/CI didn't help.

Adding amdgpu.dc=0 to linux cmdline resolves the issue for me, but I'm
concerned that may preclude my system from gaining newer features.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #23 from Tom reed <tom@reed.vg> ---
Confirmed problem. Dual monitors prevent DPMS power off. 
Problem happens when triggered by screen off or manually with xset dpms force
off.

GPU is Gigabyte RX580.
Ubuntu 18.04 LTS. Kernel 5.0.
Monitors are 2 Dell S2719dc. 

Problem occurs on xorg and on Wayland.
Problem occurs connected to HDMI and display port, and also with dual display
port.

A workaround is to disable auto input switching on the monitors. This solves
the problem.

Appears that when one monitor is switching inputs after turning off it wakes up
the other monitor. A race condition between the two.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #25 from jigglywiggly@3dslice.net ---
Are any logs needed? I am using a rx570 on a LG 27UD59-B and it keeps waking
itself up when it tries to sleep. amdgpu.dc=0 does fix it but then I get mouse
lag when I move my mouse quickly for long strokes.

This bug I feel is very important, not having basic sleep functionality is
really annoying. This did not happen to me when I used my nvidia 1060 3gb with
the proprietary driver.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #26 from OlliC <anon-98kbjd+freedesktop@mailbox.org> ---
Same problem here. Just switched from a Nvidia GTX 1050Ti to Radeon RX 590 on
Fedora 30 using standard Gnome Desktop. 

Using one Benq XL2430 via Displayport and one Benq BL2480T via HDMI.

Monitors won't go to sleep even after changing "Auto Input Switch" and "DDC/CI"
off.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #27 from Michel Dänzer <michel@daenzer.net> ---
Disabling input probing in the monitor isn't a full workaround for me (with an
HP EliteDisplay E242, in case it matters). The monitor stays off, but there's
still a hotplug event, which requires me to re-arrange the windows of my GNOME
session every time after unlocking it. So this is still kind of a DC
showstopper for me.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

Jean Delvare <jdelvare@suse.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jdelvare@suse.de

--- Comment #28 from Jean Delvare <jdelvare@suse.de> ---
Same problem here. Radeon RX 550 with 2 identical Lenovo P27h-10 displays
configured in side-by-side mode, one over DisplayPort and one over HDMI, kernel
5.2.11. When the displays go to sleep, the multi-display configuration is lost,
displays are in mirror mode when waking up, and I must configure them again.
Booting with amdgpu.dc=0 works around the problem (thanks Michel for the hint!)

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #29 from Arianne Brink <ariannebrink@posteo.de> ---
My Vega 56 is showing the same problems. However, I noticed that by disabling
xfsettingsd in XFCE and kscreen in Plasma it solved the problem. It will
suspend my monitors properly using dpms force off.  I3WM and other window
managers don't show the same problem either, this seems to be related to
desktop environments and the way they manage displays.

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #30 from Michel Dänzer <michel@daenzer.net> ---
(In reply to Arianne Brink from comment #29)
> My Vega 56 is showing the same problems. However, I noticed that by
> disabling xfsettingsd in XFCE and kscreen in Plasma it solved the problem.

Disabling those probably just means nothing listens to the spurious hotplug
events, thereby avoiding the problem. Just another workaround, not a proper
solution.

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[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

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https://bugs.freedesktop.org/show_bug.cgi?id=109246

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

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

--- Comment #31 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
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You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/662.

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