Attached is an annotated copy of my system log with the relevant update from 107 to 112, the failed boots with 112, a successful boot with the last good kernel 107, and a boot with 112 using the workaround. Search for BOOT in capital letters to find the start of each boot. I hope this might be helpful.
I am no expert, but perhaps these lines might be relevant, as they only seem to occur on the failed boots with 112: Jun 8 19:17:56 paul kernel: [ 3.190269] amdgpu: Topology: Add APU node [0x15d8:0x1002] Jun 8 19:17:56 paul kernel: [ 3.190273] kfd kfd: amdgpu: added device 1002:15d8 Jun 8 19:17:56 paul kernel: [ 3.190280] kfd kfd: amdgpu: Failed to resume IOMMU for device 1002:15d8 Jun 8 19:17:56 paul kernel: [ 3.190287] amdgpu 0000:27:00.0: amdgpu: amdgpu_device_ip_init failed Jun 8 19:17:56 paul kernel: [ 3.190292] amdgpu 0000:27:00.0: amdgpu: Fatal error during GPU init Jun 8 19:17:56 paul kernel: [ 3.190296] amdgpu 0000:27:00.0: amdgpu: amdgpu: finishing device. ** Attachment added: "syslog-for-broken-kernel-112" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2068738/+attachment/5787506/+files/syslog-for-broken-kernel-112 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2068738 Title: Kernel update 5.15.0-112 might cause severe problems with specific AMD GPUs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2068738/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
