* [Bug 202873] New: (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU
@ 2019-03-11 16:36 bugzilla-daemon
2019-03-29 12:45 ` [Bug 202873] " bugzilla-daemon
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: bugzilla-daemon @ 2019-03-11 16:36 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=202873
Bug ID: 202873
Summary: (amdgpu) Screen flickering when using a 75Hz monitor
paired with an RX 480 GPU
Product: Drivers
Version: 2.5
Kernel Version: 4.18, 4.19, 4.20, 5.0
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Video(DRI - non Intel)
Assignee: drivers_video-dri@kernel-bugs.osdl.org
Reporter: m.ivanov2k@gmail.com
Regression: No
My monitor is LG 24MP59G-P (75Hz, FreeSync) and my GPU is Sapphire Nitro+ RX
480 8GB.
Basically, whenever there is movement on my screen (oddly though, cursor
movement doesn't cause it), it would flicker very badly.
Here is a video of what I am talking about: https://streamable.com/5eu7p
Apart from trying different refresh rates, as seen in the video, I have also
tried switching kernel versions, switching from DisplayPort to HDMI, changing
compositor settings and turning off FreeSync from the monitor OSD, but nothing
seems to resolve the bug.
What works for me as a workaround is changing
/sys/class/drm/card0/device/power_dpm_force_performance_level from auto to
either low or high. When I do watch -n 1
"/sys/class/drm/card0/device/pp_dpm_mclk" with the performance level on auto,
it normally stays on the lowest (300MHz) and when I move a window around, it
constantly switches from 300MHz to 2000MHz (the max on my GPU). Apparently,
that's what's causing it to behave this way.
I should emphasize, that I observed the bug in Antergos, Debian 9 Buster
(Stretch is good), Manjaro XFCE, Manjaro KDE, Ubuntu 18.10, KUbuntu 18.04 and
KUbuntu 18.10. At first I thought it was only related to Arch Linux
derivatives, since they all use bleeding-edge packages, but then I noticed,
that after switching Debian 9 Stretch's (stable) sources to Buster (testing)
and after updating KUbuntu 18.10, the bug appeared in both distros as well.
Here is a link to a thread I created in the Manjaro forums, where I asked for
help:
https://forum.manjaro.org/t/manjaro-kde-screen-flickering-cant-seem-to-find-a-solution/78349
- You can find all kinds of different things I tried there, as well as more
in-depth system information.
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* [Bug 202873] (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU
2019-03-11 16:36 [Bug 202873] New: (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU bugzilla-daemon
@ 2019-03-29 12:45 ` bugzilla-daemon
2019-03-29 12:51 ` bugzilla-daemon
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: bugzilla-daemon @ 2019-03-29 12:45 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=202873
Thomas (v10lator@myway.de) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |v10lator@myway.de
--- Comment #1 from Thomas (v10lator@myway.de) ---
I think I have the same error but just to get sure: What kernel version are you
using? Just asking because 5.0.4 flickers for me while 4.18.12 doesn't. Sadly I
can't bisect as kernels between these two versions won't boot for me cause of
other bugs.
A bit info about my setup:
Sapphire Nitro+ Radeon RX 580 - "Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480/570/570X/580/580X] (rev e7)"
Gentoo Linux (amd64)
Mesa 18.3.4
LXQT
amdgpu.ppfeaturemask=0xffffffff amdgpu.dc=1 amdgpu.gpu_recovery=1
If this is the same bug and if you have a working kernel (4.18.12 maybe?) could
you please bisect this? Also maybe compare the kernel versions of working and
none-working distros? ;)
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* [Bug 202873] (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU
2019-03-11 16:36 [Bug 202873] New: (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU bugzilla-daemon
2019-03-29 12:45 ` [Bug 202873] " bugzilla-daemon
@ 2019-03-29 12:51 ` bugzilla-daemon
2019-03-29 13:06 ` bugzilla-daemon
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: bugzilla-daemon @ 2019-03-29 12:51 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=202873
--- Comment #2 from Thomas (v10lator@myway.de) ---
One more thing: I'm connected to a 60Hz monitor which AFAIK has no FreeSync
support (Dell ST2220M).
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* [Bug 202873] (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU
2019-03-11 16:36 [Bug 202873] New: (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU bugzilla-daemon
2019-03-29 12:45 ` [Bug 202873] " bugzilla-daemon
2019-03-29 12:51 ` bugzilla-daemon
@ 2019-03-29 13:06 ` bugzilla-daemon
2019-04-06 6:36 ` bugzilla-daemon
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: bugzilla-daemon @ 2019-03-29 13:06 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=202873
--- Comment #3 from Thomas (v10lator@myway.de) ---
Now I just realized that I have a second display (TV - Samsung UE40H5090 -
AFAIK also no FreeSync) attached and turned it on to see what happens: Both
displays flicker. If I disable the second screen in LXQTs settings the
flickering stops and all is fine.
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* [Bug 202873] (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU
2019-03-11 16:36 [Bug 202873] New: (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU bugzilla-daemon
` (2 preceding siblings ...)
2019-03-29 13:06 ` bugzilla-daemon
@ 2019-04-06 6:36 ` bugzilla-daemon
2019-05-06 6:33 ` bugzilla-daemon
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: bugzilla-daemon @ 2019-04-06 6:36 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=202873
--- Comment #4 from Thomas (v10lator@myway.de) ---
Kernel 5.0.5 still flickers. Anyway, after watching this more closely I'm
pretty sure it's the same bug (the text cursor for entering username/password
causes flickering on SDDM, for example). Still it seems to be fixed by
deactivating the second monitor.
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* [Bug 202873] (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU
2019-03-11 16:36 [Bug 202873] New: (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU bugzilla-daemon
` (3 preceding siblings ...)
2019-04-06 6:36 ` bugzilla-daemon
@ 2019-05-06 6:33 ` bugzilla-daemon
2019-05-08 10:27 ` bugzilla-daemon
2019-05-08 10:30 ` bugzilla-daemon
6 siblings, 0 replies; 8+ messages in thread
From: bugzilla-daemon @ 2019-05-06 6:33 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=202873
--- Comment #5 from Thomas (v10lator@myway.de) ---
I got an X.org and SDDM update and now the PC freezes with a black screen while
starting X if the second monitor is attached.
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* [Bug 202873] (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU
2019-03-11 16:36 [Bug 202873] New: (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU bugzilla-daemon
` (4 preceding siblings ...)
2019-05-06 6:33 ` bugzilla-daemon
@ 2019-05-08 10:27 ` bugzilla-daemon
2019-05-08 10:30 ` bugzilla-daemon
6 siblings, 0 replies; 8+ messages in thread
From: bugzilla-daemon @ 2019-05-08 10:27 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=202873
Haxk20 (haxk612@gmail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |haxk612@gmail.com
--- Comment #6 from Haxk20 (haxk612@gmail.com) ---
Could you try Kernel 5.1 ?
It has a fix for flickering when Freesync is enabled.
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* [Bug 202873] (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU
2019-03-11 16:36 [Bug 202873] New: (amdgpu) Screen flickering when using a 75Hz monitor paired with an RX 480 GPU bugzilla-daemon
` (5 preceding siblings ...)
2019-05-08 10:27 ` bugzilla-daemon
@ 2019-05-08 10:30 ` bugzilla-daemon
6 siblings, 0 replies; 8+ messages in thread
From: bugzilla-daemon @ 2019-05-08 10:30 UTC (permalink / raw)
To: dri-devel
https://bugzilla.kernel.org/show_bug.cgi?id=202873
--- Comment #7 from Haxk20 (haxk612@gmail.com) ---
Ah sorry this is the old bug where clocks cause flickering. But still try 5.1.
Maybe it will help.
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