https://bugzilla.kernel.org/show_bug.cgi?id=211277 --- Comment #23 from James Zhu (jamesz@xxxxxxx) --- Hi kolAflash, VCN IP is for video acceleration(for video playback), if vcn ip didn't handle suspend/resume process properly, we do observe other IP blocks be affected. For your case it is display IP(dm) related. ip_block_mask=0xff (in grub should be amdgpu.ip_block_mask=0x0ff) can disable VCN IP during amdgpu driver loading. so this experiment can tell if this dm error is caused by VCN IP or not. sometimes /sys/kernel/debug/dri/0/amdgpu_fence_info can provide some useful information if it has chance to be dumped. these experiments can help identified which IP cause the issue. So we can find expert in that area to continue to triage. Your current report is case 2, so it can be replaced with 2. amd-drm-next-5.14-2021-05-12* with ip_block_mask=0x0ff, with Xorg and without 3D acceleration in daily use. I suggest you to execute your test plan in order 4->3->2->1. Thanks! James -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
