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 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1999189/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp