Bug 215223

Summary: AMDGPU Driver with Radeon RX 6700 sometimes can not find display
Product: Drivers Reporter: reznov90210
Component: Video(DRI - non Intel)Assignee: drivers_video-dri
Status: NEW ---    
Severity: normal CC: alexdeucher
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: 5.15.10 Subsystem:
Regression: No Bisected commit-id:
Attachments: Xorg log
dmesg
journalctl -b - 1..4

Description reznov90210 2021-12-05 18:29:30 UTC 
Created attachment 299899 [details]
Xorg log

I have a problem with RX6700 connected to monitor using display port. It happens in 60% cases, while kernel booting i see some init messages and get black screen without signal, so i need to reset my system.

As i understand, this happens because AMDGPU can not find current display, connected to display port.

>(WW) AMDGPU(0): No outputs definitely connected, trying again...

If system is booting, i haven't got any problems. I can watch videos (with HW acceleration) or playing games. 

I have also tested on 5.13.x kernel with same result. 

When i try to load Windows, i haven't got this problem. 

What's more strange, that connecting to HDMI solves this problem and linux kernel proper initialize my display.
Comment 1 Alex Deucher 2021-12-07 17:27:08 UTC 
Please attach your dmesg output.  What type of display is problematic (HDMI, Displayport, some sort of dongle)?
Comment 2 reznov90210 2021-12-19 14:55:10 UTC 
(In reply to Alex Deucher from comment #1)
> Please attach your dmesg output.  What type of display is problematic (HDMI,
> Displayport, some sort of dongle)?


Sorry for long delay. I have not got this problem for about 2 weeks (and can not get logs). But today, it was appeared again. Now I have attached logs. I have a problem with Displayport.
Comment 3 reznov90210 2021-12-19 14:55:44 UTC 
Created attachment 300075 [details]
dmesg
Comment 4 reznov90210 2021-12-19 14:57:00 UTC 
I also have update to latest kernel and have same problem.
Comment 5 reznov90210 2021-12-19 14:58:02 UTC 
Created attachment 300077 [details]
journalctl -b - 1..4
Comment 6 reznov90210 2021-12-20 19:00:54 UTC 
Switching off and then switching on monitor helps.