RX580 Display flickering after waking from suspend

Submitted by clapbr @clapbr

Assigned to Default DRI bug account

Link to original bug (#108322)

Description

GPU RX580 Nitro+ over DisplayPort to a single AOC 75hz monitor. Issue is on last kernels 4.18 4.19 but not in 4.14.

Screen starts flickering until reboot if I sleep/wake or if I manually switch the monitor off/on.

Tried to turn amdgpu.dc=0, screen then flickers everywhere anytime unless I manually change frequency from 75hz to 60hz. That only solves it inside KDE though.

Checking gpu related logs shows this error, but couldn't find anything else:
"Invalid PCI ROM header signature: expecting 0xaa55, got 0xffff"

added AMDgpu bugzilla labels

Alex Deucher @agd5f said:

Please attach your dmesg output and Xorg log if using X.

clapbr @clapbr uploaded an attachment:

Attachment 141985, "dmesg | grep -i amd":
grepamd

clapbr @clapbr uploaded an attachment:

Attachment 141986, "dmesg | grep -i gpu":
grepgpu

clapbr @clapbr uploaded an attachment:

Attachment 141987, "dmesg | grep -i drm":
grepdrm

clapbr @clapbr uploaded an attachment:

Attachment 141988, "xorg log":
xorglog

Alex Deucher @agd5f said:

Please just attach the full dmesg output.

clapbr @clapbr uploaded an attachment:

Attachment 141990, "dmesg":
fulldmesg

Alex Deucher @agd5f said:

Xorg log seems to be broken.

clapbr @clapbr uploaded an attachment:

sorry

Attachment 141991, "fixed xorg log":
Xorg.0.log

clapbr @clapbr said:

https://www.phoronix.com/scan.php?page=news_item&px=AMD-V4-Adaptive-VRR-FreeSync
Is this maybe related?

clapbr @clapbr said:

Compiled last AMD-drm-next kernel from git and problem's still here, even worse, it's now flickering everywhere at 75hz.
Discovered from another bug report that forcing clocks to high "fixed" the flickering, and it does indeed.
It also doesn't flicker if I force 60hz everywhere. It's worth mentioning its a 1080p Freesync 75hz DP1.2 monitor.

clapbr @clapbr said:

Created custom modes and forced it into xrandr. 75hz flickers, but 73hz is working fine it seems. This is on last amd-drm-next-staging

~ >>> gtf 1920 1080 73

1920x1080 @ 73.00 Hz (GTF) hsync: 82.20 kHz; pclk: 214.37 MHz

Modeline "1920x1080_73.00" 214.37 1920 2056 2264 2608 1080 1081 1084 1126 -HSync +Vsync
~ >>> xrandr --newmode "1920x1080_73.00" 214.37 1920 2056 2264 2608 1080 1081 1084 1126 -HSync +Vsync [130]
~ >>> xrandr --addmode DisplayPort-0 "1920x1080_73.00"
~ >>> xrandr --output DisplayPort-0 --mode "1920x1080_73.00"

Will keep it like this for now and test it in games, but in kde plasma/chromium 73hz is smooth as silk it seems. Another thing I noticed is gtf generates higher pixel clocks than the ones from my monitor (edid?). You can compare above result with the attached xorg log.

Nicholas Kazlauskas @kazlaus said:

(In reply to bmilreu from comment 10)

https://www.phoronix.com/scan.php?page=news_item&px=AMD-V4-Adaptive-VRR-
FreeSync
Is this maybe related?

This would be unrelated - those patches are still in review and not part of any tree yet.

Luminance flickering is also a bit different from typical flickering. It is a more subtle effect and doesn't have any sort of visual corruption associated with it - lines, the screen displaying black, etc.

clapbr @clapbr said:

Problem still present for me on kernels 4.18, 4.19, 4.20 and 4.21-drm-next

clapbr @clapbr said:

4.20 released with this bug still, now starts flickering everywhere since start like before. Please look at this

This issue hasn't had any activity since 2019-11-19. The AMD driver stack changes rapidly and contains lots of shared code across products so it's possible that it has already been fixed. Please upgrade to a current stable kernel and userspace stack and try again. If you still experience this issue with the latest driver stack, please capture relevant logging and open a new issue referring back to this one.

closed