Public bug reported:
I've been getting issues with my 2 DP monitors (and system) not
recovering from blanking (possibly 100% of the time). If I disable
blanking, the issue never occurs. I am forced to REISUB the system to
regain access.
As I'm using amdgpu from the HWE kernel, my best guess is thats where
the issue lies.
When the issue occurs I am completely unable to access the system due to
a softlock and CPU getting maxed by Xorg. SSH barely works and the
system doesn't respond to request to perform dumps like Alt-
PrintScreen-1.
The only relevant output I have seen (as a user) is in syslog, and
possibly dmseg. I am not sharing anything yet until I get some clear
directions on exactly what is required and how I can share it.
In addition, when I try to submit an apport-bug it fails (multiple
times). Here is the Error ID: OOPS-108b77945d65b4a0f23eba000f0d8a8e
while trying to wait for the launchpad page to process my data.
As of now I have no way to share any data other than pasting it in a bug
report. Unless there is another way to automate the data collection.
Which I'd prefer by far.
Finally, as I'm more of a user, I can only likely manage to test
anything with some decent instructions.
OS: Description: Ubuntu 20.04.5 LTS
Release: 20.04
System: Asus PN51-E1 (minipc), 32 GB RAM, AMD Ryzen 7 5700U with Radeon Graphics
2 DP monitors
DP to DP cable
USB-C to DP cable (tested without this connected and it makes no difference)
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1999189
Title:
Displayport monitors hang on blanking and must REISUB my 20.04.5
system
Status in linux package in Ubuntu:
New
Bug description:
I've been getting issues with my 2 DP monitors (and system) not
recovering from blanking (possibly 100% of the time). If I disable
blanking, the issue never occurs. I am forced to REISUB the system to
regain access.
As I'm using amdgpu from the HWE kernel, my best guess is thats where
the issue lies.
When the issue occurs I am completely unable to access the system due
to a softlock and CPU getting maxed by Xorg. SSH barely works and the
system doesn't respond to request to perform dumps like Alt-
PrintScreen-1.
The only relevant output I have seen (as a user) is in syslog, and
possibly dmseg. I am not sharing anything yet until I get some clear
directions on exactly what is required and how I can share it.
In addition, when I try to submit an apport-bug it fails (multiple
times). Here is the Error ID: OOPS-108b77945d65b4a0f23eba000f0d8a8e
while trying to wait for the launchpad page to process my data.
As of now I have no way to share any data other than pasting it in a
bug report. Unless there is another way to automate the data
collection. Which I'd prefer by far.
Finally, as I'm more of a user, I can only likely manage to test
anything with some decent instructions.
OS: Description: Ubuntu 20.04.5 LTS
Release: 20.04
System: Asus PN51-E1 (minipc), 32 GB RAM, AMD Ryzen 7 5700U with Radeon
Graphics
2 DP monitors
DP to DP cable
USB-C to DP cable (tested without this connected and it makes no difference)
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