Thanks. It appears the problem is the 'amdgpu' kernel driver crashing on resume-from-suspend:
Jul 26 14:29:32 HP-Laptop kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0 timeout, signaled seq=741, emitted seq=743 Jul 26 14:29:32 HP-Laptop kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process pid 0 thread pid 0 Jul 26 14:29:32 HP-Laptop kernel: amdgpu 0000:03:00.0: amdgpu: GPU reset begin! ... Jul 26 14:29:32 HP-Laptop kernel: Call Trace: Jul 26 14:29:32 HP-Laptop kernel: pm_uninit+0x16/0x20 [amdgpu] Jul 26 14:29:32 HP-Laptop kernel: stop_cpsch+0xa5/0xd0 [amdgpu] Jul 26 14:29:32 HP-Laptop kernel: kgd2kfd_suspend.part.0+0x35/0x50 [amdgpu] Jul 26 14:29:32 HP-Laptop kernel: kgd2kfd_pre_reset+0x3c/0x50 [amdgpu] Jul 26 14:29:32 HP-Laptop kernel: amdgpu_amdkfd_pre_reset+0x1a/0x20 [amdgpu] Jul 26 14:29:32 HP-Laptop kernel: amdgpu_device_gpu_recover.cold+0x204/0xc4a [amdgpu] Jul 26 14:29:32 HP-Laptop kernel: amdgpu_job_timedout+0x123/0x150 [amdgpu] ** Summary changed: - System freeze + System freeze (amdgpu kernel crash on resume from suspend) ** Package changed: ubuntu => linux (Ubuntu) ** Package changed: linux (Ubuntu) => linux-hwe-5.8 (Ubuntu) ** Tags added: suspend-resume -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1937321 Title: System freeze (amdgpu kernel crash on resume from suspend) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.8/+bug/1937321/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
