[Bug 2069550] Re: DUTs displayed a black screen after installing the kernel in proposed on Focal

*** This bug is a duplicate of bug 2068738 ***
https://bugs.launchpad.net/bugs/2068738

Known regression. See bug 2068738

** This bug has been marked a duplicate of bug 2068738
AMD GPUs fail with null pointer dereference when IOMMU enabled, leading to black screen

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
https://bugs.launchpad.net/bugs/2069550

Title:
DUTs displayed a black screen after installing the kernel in proposed
on Focal

Status in linux package in Ubuntu:
New

Bug description:
During the SRU testing for 5.15.0-112 kernel on Focal, I found 2 AMD laptops displayed a black screen.
After some investigation, the impacted laptops both with Picasso/Raven 2(1002:15d8) GPU.
Output for lscpi and journalctl are attached.
If you need more detail, please let me know.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2069550/+subscriptions