Here is an example error/crash from journalctl: Dec 14 17:51:18 hostname kernel: ------------[ cut here ]------------ Dec 14 17:51:18 hostname kernel: WARNING: CPU: 3 PID: 2408 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_dp.c:2807 decide_link_settings+0x11a/0x200 [amdgpu] Dec 14 17:51:18 hostname kernel: Modules linked in: rfcomm cmac algif_hash algif_skcipher af_alg bnep nls_iso8859_1 snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hd> Dec 14 17:51:18 hostname kernel: lp parport ramoops pstore_blk reed_solomon pstore_zone efi_pstore ip_tables x_tables autofs4 dm_crypt hid_generic usbhid rtsx_usb_sdmmc rtsx_usb amdgpu iommu_v2 gpu_> Dec 14 17:51:18 hostname kernel: CPU: 3 PID: 2408 Comm: Xorg Not tainted 5.15.0-56-generic #62~20.04.1-Ubuntu Dec 14 17:51:18 hostname kernel: Hardware name: ASUSTeK COMPUTER INC. MINIPC PN51-E1/PN51-E1, BIOS 0503 06/21/2021 Dec 14 17:51:18 hostname kernel: RIP: 0010:decide_link_settings+0x11a/0x200 [amdgpu] Dec 14 17:51:18 hostname kernel: Code: 76 4c b9 f6 0a 00 00 48 c7 c2 a0 72 ca c0 bf 02 00 00 00 48 c7 c6 72 a0 d3 c0 e8 01 ba 87 ff 8b 43 64 85 c0 0f 85 67 ff ff ff <0f> 0b e9 60 ff ff ff ba 02 00 00> Dec 14 17:51:18 hostname kernel: RSP: 0018:ffffb226836ab5a0 EFLAGS: 00010246 Dec 14 17:51:18 hostname kernel: RAX: 0000000000000000 RBX: ffff95d05a482800 RCX: 0000000000000af6 Dec 14 17:51:18 hostname kernel: RDX: ffffffffc0ca72a0 RSI: ffffffffc0d3a072 RDI: 0000000000000002 Dec 14 17:51:18 hostname kernel: RBP: ffffb226836ab5d8 R08: ffff95d051a1d000 R09: ffffb226836ab5b8 Dec 14 17:51:18 hostname kernel: R10: 0000000000800000 R11: 0000000000000000 R12: ffff95d051a1d000 Dec 14 17:51:18 hostname kernel: R13: ffffb226836ab5f0 R14: 0000000000093828 R15: ffff95d13df206a0 Dec 14 17:51:18 hostname kernel: FS: 00007f57c4414a40(0000) GS:ffff95d556ec0000(0000) knlGS:0000000000000000 Dec 14 17:51:18 hostname kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Dec 14 17:51:18 hostname kernel: CR2: 000055f5c0d69070 CR3: 0000000118f2c000 CR4: 0000000000350ee0 Dec 14 17:51:18 hostname kernel: Call Trace: Dec 14 17:51:18 hostname kernel: <TASK> Dec 14 17:51:18 hostname kernel: enable_link_dp+0xa0/0x250 [amdgpu] Dec 14 17:51:18 hostname kernel: enable_link+0x295/0x3c0 [amdgpu] Dec 14 17:51:18 hostname kernel: core_link_enable_stream+0x32a/0x5a0 [amdgpu] Dec 14 17:51:18 hostname kernel: dce110_apply_ctx_to_hw+0x749/0x7d0 [amdgpu] Dec 14 17:51:18 hostname kernel: dc_commit_state_no_check+0x2fb/0xf50 [amdgpu] Dec 14 17:51:18 hostname kernel: dc_commit_state+0xd4/0x150 [amdgpu] Dec 14 17:51:18 hostname kernel: amdgpu_dm_atomic_commit_tail+0x56e/0x1940 [amdgpu] Dec 14 17:51:18 hostname kernel: ? dml_rq_dlg_get_rq_params+0x3b0/0x3b0 [amdgpu] Dec 14 17:51:18 hostname kernel: ? dcn21_validate_bandwidth_fp+0x147/0x360 [amdgpu] Dec 14 17:51:18 hostname kernel: ? dcn21_validate_bandwidth_fp+0x147/0x360 [amdgpu] Dec 14 17:51:18 hostname kernel: ? save_fpregs_to_fpstate+0x3f/0xa0 Dec 14 17:51:18 hostname kernel: ? dc_fpu_end+0x7e/0x90 [amdgpu] Dec 14 17:51:18 hostname kernel: ? ttm_bo_mem_compat+0x30/0x90 [ttm] Dec 14 17:51:18 hostname kernel: ? ttm_bo_validate+0x50/0x110 [ttm] Dec 14 17:51:18 hostname kernel: ? dm_plane_helper_prepare_fb+0x1d9/0x290 [amdgpu] Dec 14 17:51:18 hostname kernel: ? __cond_resched+0x19/0x40 Dec 14 17:51:18 hostname kernel: ? __wait_for_common+0x3d/0x160 Dec 14 17:51:18 hostname kernel: ? wait_for_completion_timeout+0x1d/0x30 Dec 14 17:51:18 hostname kernel: commit_tail+0xc5/0x180 [drm_kms_helper] Dec 14 17:51:18 hostname kernel: ? drm_atomic_helper_swap_state+0x20f/0x370 [drm_kms_helper] Dec 14 17:51:18 hostname kernel: drm_atomic_helper_commit+0x12b/0x150 [drm_kms_helper] Dec 14 17:51:18 hostname kernel: drm_atomic_commit+0x4a/0x60 [drm] Dec 14 17:51:18 hostname kernel: drm_atomic_helper_set_config+0x80/0xc0 [drm_kms_helper] Dec 14 17:51:18 hostname kernel: drm_mode_setcrtc+0x1ff/0x7d0 [drm] Dec 14 17:51:18 hostname kernel: ? drm_mode_getcrtc+0x1e0/0x1e0 [drm] Dec 14 17:51:18 hostname kernel: drm_ioctl_kernel+0xb2/0x100 [drm] Dec 14 17:51:18 hostname kernel: drm_ioctl+0x275/0x4a0 [drm] Dec 14 17:51:18 hostname kernel: ? drm_mode_getcrtc+0x1e0/0x1e0 [drm] Dec 14 17:51:18 hostname kernel: amdgpu_drm_ioctl+0x4e/0x90 [amdgpu] Dec 14 17:51:18 hostname kernel: __x64_sys_ioctl+0x95/0xd0 Dec 14 17:51:18 hostname kernel: do_syscall_64+0x5c/0xc0 Dec 14 17:51:18 hostname kernel: ? syscall_exit_to_user_mode+0x27/0x50 Dec 14 17:51:18 hostname kernel: ? do_syscall_64+0x69/0xc0 Dec 14 17:51:18 hostname kernel: ? __x64_sys_close+0x12/0x50 Dec 14 17:51:18 hostname kernel: ? do_syscall_64+0x69/0xc0 Dec 14 17:51:18 hostname kernel: ? do_syscall_64+0x69/0xc0 Dec 14 17:51:18 hostname kernel: ? do_syscall_64+0x69/0xc0 Dec 14 17:51:18 hostname kernel: entry_SYSCALL_64_after_hwframe+0x61/0xcb Dec 14 17:51:18 hostname kernel: RIP: 0033:0x7f57c47713ab Dec 14 17:51:18 hostname kernel: Code: 0f 1e fa 48 8b 05 e5 7a 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b> Dec 14 17:51:18 hostname kernel: RSP: 002b:00007ffd2c888298 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 Dec 14 17:51:18 hostname kernel: RAX: ffffffffffffffda RBX: 00007ffd2c8882d0 RCX: 00007f57c47713ab Dec 14 17:51:18 hostname kernel: RDX: 00007ffd2c8882d0 RSI: 00000000c06864a2 RDI: 000000000000000c Dec 14 17:51:18 hostname kernel: RBP: 00000000c06864a2 R08: 0000000000000000 R09: 000055f5c0672ed0 Dec 14 17:51:18 hostname kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 Dec 14 17:51:18 hostname kernel: R13: 000000000000000c R14: 000055f5c07dfe20 R15: 0000000000000000 Dec 14 17:51:18 hostname kernel: </TASK> Dec 14 17:51:18 hostname kernel: ---[ end trace 13f4f70063bd3ba1 ]--- Dec 14 17:51:18 hostname kernel: ------------[ cut here ]------------
-- 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: Confirmed 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 dmesg. 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. Finally, as I'm more of a user, I can only likely manage to test anything with some decent instructions. This issue has been going on for a few weeks, and due to a recent hardware change I cannot confirm if there was a time when my current system did not have the issue. 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) --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: test 20733 F.... pulseaudio /dev/snd/controlC0: test 20733 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2022-02-17 (294 days ago) InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819) MachineType: ASUSTeK COMPUTER INC. MINIPC PN51-E1 Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-56-generic root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.15.0-56.62~20.04.1-generic 5.15.64 RelatedPackageVersions: linux-restricted-modules-5.15.0-56-generic N/A linux-backports-modules-5.15.0-56-generic N/A linux-firmware 1.187.35 Tags: focal Uname: Linux 5.15.0-56-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: N/A WifiSyslog: _MarkForUpload: True dmi.bios.date: 06/21/2021 dmi.bios.release: 5.3 dmi.bios.vendor: ASUSTeK COMPUTER INC. dmi.bios.version: 0503 dmi.board.asset.tag: Default string dmi.board.name: PN51-E1 dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: To be filled by O.E.M. dmi.chassis.asset.tag: Default string dmi.chassis.type: 35 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnASUSTeKCOMPUTERINC.:bvr0503:bd06/21/2021:br5.3:svnASUSTeKCOMPUTERINC.:pnMINIPCPN51-E1:pvr0503:rvnASUSTeKCOMPUTERINC.:rnPN51-E1:rvrTobefilledbyO.E.M.:cvnDefaultstring:ct35:cvrDefaultstring:sku: dmi.product.family: Vivo PC dmi.product.name: MINIPC PN51-E1 dmi.product.version: 0503 dmi.sys.vendor: ASUSTeK COMPUTER INC. 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