[amdgpu][psr] Screen flickering/ tearing on 6.1/6.2/6.3 kernel

[Roemer Claasen]

After upgrading from kernel 5.19.0-35-generic to 6.1.0-1007-oem there is occasional screen flicker/ tear. It happens around every minute; it seems connected to window/ pointer movement, but I have no clear way of reproducing. Disruption is minor, but annoying.

I'm running 22.04 LTS on a new Thinkpad T14s with AMD Ryzen 6850u. The system is fully functional. No crashes, nothing breaks.

Background on the use of 6.1.0-1007-oem: 5.19.0-35-generic breaks suspend/ resume on my laptop, see https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.19/+bug/2007718.

In a way, running 6.1 is a 'flight forward', since 5.15.0-67-generic (previous 22.04.1 LTS kernel) works well, with working suspend/ resume, and without screen flicker. But that's an 'old' kernel now, missing some nice improvements for the newer Ryzen APUs.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-oem-22.04c 6.1.0.1007.7
ProcVersionSignature: Ubuntu 6.1.0-1007.7-oem 6.1.6
Uname: Linux 6.1.0-1007-oem x86_64
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Mar 10 13:09:20 2023
InstallationDate: Installed on 2023-02-06 (31 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
SourcePackage: linux-meta-oem-6.1
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

I'm not familiar with toggling PSR on amdgpu systems but does it let you write 0 to '/sys/kernel/debug/dri/0/eDP-1/psr_state' ?

[Roemer Claasen (rclaasen)]

Daniel, thanks for the suggestion!

This is quite possibly a duplicate of https://gitlab.freedesktop.org/drm/amd/-/issues/2352.

I'm evaluating the suggestion to add "amdgpu.dcdebugmask=0x10" to the kernel boot parameters. That parameter seems to disable PSR, see below.

➜ ~ sudo cat /sys/kernel/debug/dri/0/eDP-1/psr_state
0
➜ ~ sudo cat /sys/kernel/debug/dri/0/eDP-1/psr_capability
Sink support: yes [0x03]
Driver support: no [0xffffffff]

Kernel package: Ubuntu linux-oem-22.04c, current version 6.1.0-1008-oem.

I'll report back in a few days to see if this indeed fixes the flickering.

[Roemer Claasen (rclaasen)]

Adding the kernel boot parameter fixes the flickering screen.

Short HOWTO:

 - open `/etc/ default/grub`
 - add "amdgpu.dcdebugmask=0x10" as kernel boot parameter to `GRUB_CMDLINE_LINUX_DEFAULT` (on my system this now reads "quiet splash amdgpu.dcdebugmask=0x10")
 - call `sudo update-grub`
 - reboot

[Roemer Claasen (rclaasen)]

@Daniel: so yes, this was indeed PSR. Disabling it fixes this issue. Thanks for the support!

[Timo Aaltonen (tjaalton)]

do you see this with a mainline 6.2 or 6.3rc build?

https://kernel.ubuntu.com/~kernel-ppa/mainline/

[Timo Aaltonen (tjaalton)]

ah sorry, missed that this was already filed upstream and still unresolved.. so the mainline builds probably won't help you

[Roemer Claasen (rclaasen)]

@Timo: I tried 6.1.21 recently, and an older 6.2 mainline kernel (6.2.2?) from the kernel-ppa. The screen flicker/ tearing was still present on both.

As a whole the system appeared somewhat unstable (occasional system halt), but I did not investigate, just went back to linux-oem-6.1.

Should it be fixed in the mainline and on linux-oem-6.1 without the kernel parameter? I can retry if that would help?!

[Daniel van Vugt (vanvugt)]

We probably don't need the confusing Invalid status on linux-oem-6.1 when that only exists for jammy.

[Mario Limonciello (superm1)]

I do think a double check against 6.3-rc4 would be worthwhile with no parameters set.

The upstream issue is a bit confusing because it has both PSR and S/G issues conflated.

[Roemer Claasen (rclaasen)]

I've tried 6.3rc5 (6.3.0-060300rc5-generic) without the parameter, and the flickering is still there at times. It appears to be a lot less than on 6.1/6.2 (without parameter set), though that's a very subjective observation.

@Mario: Is there anything I can do to analyze further?

[Mario Limonciello (superm1)]

There are potentially two bugs at play here. One with scatter/gather and one for PSR. They both manifest really similarly, so let's try with both disabled.

There is a parameter that is introduced in 6.3 for amdgpu.sg_display. Can you please explicitly set that to "0" along with the PSR disable parameter and see if everything is cleared up?

If it is; please allow PSR again and see if SG disabled alone is enough to fix it.

[Roemer Claasen (rclaasen)]

Hi Mario, thanks for your support!

I will test the following kernel parameter settings and report back:

Test 1: amdgpu.dcdebugmask=0x10 amdgpu.sg_display=0 (running now)
Test 2: amggpu.sg_display=0

Cheers,

Roemer

[Roemer Claasen (rclaasen)]

Test 1: amdgpu.dcdebugmask=0x10 amdgpu.sg_display=0
All well, no observations during a full workday.

Test 2: amggpu.sg_display=0
Flicker/tear is back, and a full screen freeze within 10 minutes.

About the screen freeze: contrary to yesterday the laptop was now connected to a second screen. I was using both the internal laptop screen (PSR capable, theoretically), and an older external HDMI monitor (non-PSR capable presumably, if that even matters).

The laptop screen froze, while the external monitor was still functioning (the mouse pointer was fixed mid-screen on the laptop, while I could move it on the external monitor).

kern.log (grep amdgpu):

Apr 6 09:22:59 rct14s kernel: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-6.3.0-060300rc5-generic root=UUID=41d8f993-282a-48a5-b355-6f537a3a17ab ro quiet splash amdgpu.sg_display=0 vt.handoff=7
Apr 6 09:22:59 rct14s kernel: [ 0.004000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.3.0-060300rc5-generic root=UUID=41d8f993-282a-48a5-b355-6f537a3a17ab ro quiet splash amdgpu.sg_display=0 vt.handoff=7
Apr 6 09:22:59 rct14s kernel: [ 3.971093] [drm] amdgpu kernel modesetting enabled.
Apr 6 09:22:59 rct14s kernel: [ 3.980870] amdgpu: Virtual CRAT table created for CPU
Apr 6 09:22:59 rct14s kernel: [ 3.980887] amdgpu: Topology: Add CPU node
Apr 6 09:22:59 rct14s kernel: [ 3.981020] amdgpu 0000:33:00.0: enabling device (0006 -> 0007)
Apr 6 09:22:59 rct14s kernel: [ 3.982752] amdgpu 0000:33:00.0: amdgpu: Fetched VBIOS from VFCT
Apr 6 09:22:59 rct14s kernel: [ 3.982755] amdgpu: ATOM BIOS: 113-REMBRANDT-X37
Apr 6 09:22:59 rct14s kernel: [ 3.987559] amdgpu 0000:33:00.0: vgaarb: deactivate vga console
Apr 6 09:22:59 rct14s kernel: [ 3.987562] amdgpu 0000:33:00.0: amdgpu: Trusted Memory Zone (TMZ) feature disabled as experimental (default)
Apr 6 09:22:59 rct14s kernel: [ 3.987566] amdgpu 0000:33:00.0: amdgpu: PCIE atomic ops is not supported
Apr 6 09:22:59 rct14s kernel: [ 3.987613] amdgpu 0000:33:00.0: amdgpu: VRAM: 1024M 0x000000F400000000 - 0x000000F43FFFFFFF (1024M used)
Apr 6 09:22:59 rct14s kernel: [ 3.987616] amdgpu 0000:33:00.0: amdgpu: GART: 1024M 0x0000000000000000 - 0x000000003FFFFFFF
Apr 6 09:22:59 rct14s kernel: [ 3.987617] amdgpu 0000:33:00.0: amdgpu: AGP: 267419648M 0x000000F800000000 - 0x0000FFFFFFFFFFFF
Apr 6 09:22:59 rct14s kernel: [ 3.988145] [drm] amdgpu: 1024M of VRAM memory ready
Apr 6 09:22:59 rct14s kernel: [ 3.988148] [drm] amdgpu: 15421M of GTT memory ready.
Apr 6 09:22:59 rct14s kernel: [ 3.989361] amdgpu 0000:33:00.0: amdgpu: Will use PSP to load VCN firmware
Apr 6 09:22:59 rct14s kernel: [ 4.158660] amdgpu 0000:33:00.0: amdgpu: RAS: optional ras ta ucode is not available
Apr 6 09:22:59 rct14s kernel: [ 4.169798] amdgpu 0000:33:00.0: amdgpu: RAP: optional rap ta ucode is not available
Apr 6 09:22:59 rct14s kernel: [ 4.169805] amdgpu 0000:33:00.0: amdgpu: SECUREDISPLAY: securedisplay ta ucode is not available
Apr 6 09:22:59 rct14s kernel: [ 4.171302] amdgpu 0000:33:00.0: amdgpu: SMU is initialized successfully!
Apr 6 09:22:59 rct14s kernel: [ 4.194388] snd_hda_intel 0000:33:00.1: bound ...

[Roemer Claasen (rclaasen)]

Test 2, no external monitor connected

Another system halt with the following error:

Apr 6 12:51:59 rct14s kernel: [11686.738468] amdgpu 0000:33:00.0: [drm] *ERROR* [CRTC:72:crtc-0] flip_done timed out

I am now re-enabling "amdgpu.dcdebugmask=0x10" since that seemed to be running quite well.

kern.log | grep amdgpu:

Apr 6 09:37:17 rct14s kernel: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-6.3.0-060300rc5-generic root=UUID=41d8f993-282a-48a5-b355-6f537a3a17ab ro quiet splash amdgpu.sg_display=0 vt.handoff=7
Apr 6 09:37:17 rct14s kernel: [ 0.004000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.3.0-060300rc5-generic root=UUID=41d8f993-282a-48a5-b355-6f537a3a17ab ro quiet splash amdgpu.sg_display=0 vt.handoff=7
Apr 6 09:37:17 rct14s kernel: [ 5.089998] [drm] amdgpu kernel modesetting enabled.
Apr 6 09:37:17 rct14s kernel: [ 5.105793] amdgpu: Virtual CRAT table created for CPU
Apr 6 09:37:17 rct14s kernel: [ 5.105810] amdgpu: Topology: Add CPU node
Apr 6 09:37:17 rct14s kernel: [ 5.105975] amdgpu 0000:33:00.0: enabling device (0006 -> 0007)
Apr 6 09:37:17 rct14s kernel: [ 5.108157] amdgpu 0000:33:00.0: amdgpu: Fetched VBIOS from VFCT
Apr 6 09:37:17 rct14s kernel: [ 5.108161] amdgpu: ATOM BIOS: 113-REMBRANDT-X37
Apr 6 09:37:17 rct14s kernel: [ 5.112655] amdgpu 0000:33:00.0: vgaarb: deactivate vga console
Apr 6 09:37:17 rct14s kernel: [ 5.112658] amdgpu 0000:33:00.0: amdgpu: Trusted Memory Zone (TMZ) feature disabled as experimental (default)
Apr 6 09:37:17 rct14s kernel: [ 5.112662] amdgpu 0000:33:00.0: amdgpu: PCIE atomic ops is not supported
Apr 6 09:37:17 rct14s kernel: [ 5.112720] amdgpu 0000:33:00.0: amdgpu: VRAM: 1024M 0x000000F400000000 - 0x000000F43FFFFFFF (1024M used)
Apr 6 09:37:17 rct14s kernel: [ 5.112723] amdgpu 0000:33:00.0: amdgpu: GART: 1024M 0x0000000000000000 - 0x000000003FFFFFFF
Apr 6 09:37:17 rct14s kernel: [ 5.112725] amdgpu 0000:33:00.0: amdgpu: AGP: 267419648M 0x000000F800000000 - 0x0000FFFFFFFFFFFF
Apr 6 09:37:17 rct14s kernel: [ 5.113338] [drm] amdgpu: 1024M of VRAM memory ready
Apr 6 09:37:17 rct14s kernel: [ 5.113343] [drm] amdgpu: 15421M of GTT memory ready.
Apr 6 09:37:17 rct14s kernel: [ 5.115154] amdgpu 0000:33:00.0: amdgpu: Will use PSP to load VCN firmware
Apr 6 09:37:17 rct14s kernel: [ 5.284417] amdgpu 0000:33:00.0: amdgpu: RAS: optional ras ta ucode is not available
Apr 6 09:37:17 rct14s kernel: [ 5.296530] amdgpu 0000:33:00.0: amdgpu: RAP: optional rap ta ucode is not available
Apr 6 09:37:17 rct14s kernel: [ 5.296533] amdgpu 0000:33:00.0: amdgpu: SECUREDISPLAY: securedisplay ta ucode is not available
Apr 6 09:37:17 rct14s kernel: [ 5.298687] amdgpu 0000:33:00.0: amdgpu: SMU is initialized successfully!
Apr 6 09:37:17 rct14s kernel: [ 5.326714] snd_hda_intel 0000:33:00.1: bound 0000:33:00.0 (ops amdgpu_dm_audio_component_bind_ops [amdgpu])
Apr 6 09:37:17 rct14s kernel: [ 5.441665] kfd kfd: amdgpu: Allocated 3969056 bytes on gart
Apr 6 09:37:17 rct14s kernel: [ 5.441734] amdgpu: sdma_bitmap: 3
Apr 6 09:37:18 rct14s kernel: [ 5.481933] amdgpu: HMM registered 1024MB device memory
Apr 6 09:37:18 rct...

[Roemer Claasen (rclaasen)]

Short, massive flickering while running with parameters "amdgpu.dcdebugmask=0x10 amdgpu.sg_display=0", see video: https://www.youtube.com/watch?v=7WPtMy1nrT8

I suspect this is a separate issue, as I have not seen flickering on this scale before, it used to be a very quick, hardly noticeable tear. It appeared to be only the application with focus: first Pycharm, then Chrome.

At the same time I now notice applications being replicated across workspaces, see pictures. Seems related to the massive flickering in the video (suspicion only), not to the AMD PSR kernel parameter.

[Mario Limonciello (superm1)]

If it's trending to be caused by PSR (which it sounds like it is), try to revert this patch:
https://github.com/torvalds/linux/commit/751281c55579f0cb0e56c9797d4663f689909681

> Short, massive flickering while running with parameters "amdgpu.dcdebugmask=0x10 amdgpu.sg_display=0",

Have a try with this patch: https://gitlab.freedesktop.org/drm/amd/uploads/ebd02a1dc605110a3f28b9c4eb62c313/0001-drm-amd-display-fix-flickering-caused-by-S-G-mode.patch (and drop amdgpu.sg_display=0)

[Mario Limonciello (superm1)]

OK, here's the patch being submitted upstream that should help this if it's S/G caused:

https://patchwork.freedesktop.org/patch/532323/

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mario Limonciello (superm1)]

This commit from 6.4-rc1 fixes the S/G mode issue.

https://github.com/torvalds/linux/commit/08da182175db4c7f80850354849d95f2670e8cd9

It's CC to stable.

[Roemer Claasen (rclaasen)]

Testing 6.4-rc2 now, it seems the S/G mode issue is indeed resolved. It's been 2 days only, but the new kernel seems really stable.

I'm now running without the "amdgpu.sg_display=0" kernel param.

It seems the tearing issue is still there though, the "amdgpu.dcdebugmask=0x10" is still needed.

UPDATE: the 6.4 release candidates seem to work really well for me. Running with the following cmdline:

BOOT_IMAGE=/boot/vmlinuz-6.4.0-060400rc3-generic root=UUID=41d8f993-282a-48a5-b355-6f537a3a17ab ro quiet splash amdgpu.dcdebugmask=0x10 vt.handoff=7

[Roemer Claasen (rclaasen)]

UPDATE 2 after testing 6.4rc5.

Still a PSR-related problem when running without "amdgpu.dcdebugmask=0x10" (see kern.log below), apart from that very happy with 6.4-rc5. The flicker/ tearing issue seems to be solved (yeah!).

Without the kernel parameter I do get the following error though, apparently related to PSR:

Jun 7 14:46:12 rct14s kernel: [ 1057.362873] WARNING: CPU: 3 PID: 226 at drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dmub_psr.c:226 dmub_psr_enable+0x115/0x120 [amdgpu]
Jun 7 14:46:12 rct14s kernel: [ 1057.363546] Modules linked in: ccm michael_mic xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables libcrc32c nfnetlink rfcomm snd_seq_dummy snd_hrtimer nvme_fabrics cmac algif_hash algif_skcipher af_alg bnep qrtr_mhi amdgpu snd_soc_dmic snd_acp6x_pdm_dma snd_soc_acp6x_mach snd_sof_amd_rembrandt snd_sof_amd_renoir snd_sof_amd_acp snd_sof_pci snd_sof_xtensa_dsp joydev snd_sof intel_rapl_msr intel_rapl_common snd_sof_utils edac_mce_amd snd_soc_core iommu_v2 drm_buddy snd_compress ac97_bus snd_ctl_led gpu_sched snd_pcm_dmaengine qrtr kvm_amd drm_suballoc_helper snd_hda_codec_realtek drm_ttm_helper snd_pci_ps ath11k_pci snd_hda_codec_generic binfmt_misc snd_hda_codec_hdmi ttm snd_rpl_pci_acp6x thinkpad_acpi snd_acp_pci kvm ath11k uvcvideo drm_display_helper nvram snd_hda_intel irqbypass videobuf2_vmalloc ledtrig_audio cec qmi_helpers snd_intel_dspcfg platform_profile crct10dif_pclmul uvc snd_pci_acp6x polyval_clmulni
Jun 7 14:46:12 rct14s kernel: [ 1057.363616] snd_intel_sdw_acpi rc_core videobuf2_memops polyval_generic snd_hda_codec snd_pci_acp5x snd_seq_midi ghash_clmulni_intel input_leds videobuf2_v4l2 drm_kms_helper sha512_ssse3 snd_seq_midi_event mac80211 snd_rn_pci_acp3x aesni_intel i2c_algo_bit snd_hda_core videodev crypto_simd snd_rawmidi snd_acp_config syscopyarea snd_hwdep cryptd sysfillrect videobuf2_common snd_soc_acpi snd_pcm sysimgblt nls_iso8859_1 ccp snd_pci_acp3x rapl mc serio_raw snd_seq hid_multitouch cfg80211 btusb snd_seq_device think_lmi firmware_attributes_class wmi_bmof btrtl snd_timer btbcm libarc4 btintel snd ucsi_acpi btmtk mhi typec_ucsi k10temp typec soundcore mac_hid amd_pmc acpi_tad bluetooth ecdh_generic ecc sch_fq_codel overlay iptable_filter ip6table_filter ip6_tables br_netfilter bridge stp llc arp_tables msr parport_pc ppdev lp parport drm ramoops reed_solomon pstore_blk pstore_zone efi_pstore ip_tables x_tables autofs4 nvme nvme_core video hid_generic crc32_pclmul psmouse thunderbolt xhci_pci i2c_piix4 xhci_pci_renesas
Jun 7 14:46:12 rct14s kernel: [ 1057.363702] nvme_common i2c_hid_acpi i2c_hid wmi hid
Jun 7 14:46:12 rct14s kernel: [ 1057.363708] CPU: 3 PID: 226 Comm: kworker/3:1H Not tainted 6.4.0-060400rc5-generic #202306041930
Jun 7 14:46:12 rct14s kernel: [ 1057.363712] Hardware name: LENOVO 21CQCTO1WW/21CQCTO1WW, BIOS R22ET60W (1.30 ) 02/09/2023
Jun 7 14:46:12 rct14s kernel: [ 1057.363714] Workqueue: events_highpri dm_irq_work_func [amdgpu]
Jun 7 14:46:12 rct14s kernel: [ 1057.364201] RIP: 0010:dmub_psr_enable+0x115/0x120 [amdgpu]
Jun 7 14:46:12 rct14s kernel: [ 1057.364777] Code: 45 d0 65...

[Mario Limonciello (superm1)]

That's good news. Just today there was a new patch posted that might help the remaining PSR issue. Can you please apply this on top of 6.4-rc5?

https://patchwork.freedesktop.org/patch/541535/

[Roemer Claasen (rclaasen)]

Hi Mario,

I have to apologize, I was a little bit too fast sending that update. Immediately afterwards I had the screen flickering again, with some blackouts as well. I was able to make a video, see https://www.youtube.com/watch?v=yjL9OuXhdeg. No errors in the log though.

I will have to see if I can compile with the patch, not sure yet if I can find the time.

Thank you for your support!

Roemer

[Mario Limonciello (superm1)]

OK let's look for results with that patch when you have time.

[Roemer Claasen (rclaasen)]

Hi Mario,

I've recompiled kernel 6.4-rc5 with the patch applied, and get the same error (see below). No screen tearing/ flicker - yet. I'll report back after a day of work to see if the patch had any effect.

Thanks again for your support, best,

Roemer

$ cat /proc/cmdline:

BOOT_IMAGE=/boot/vmlinuz-6.4.0-rc5patch_541535-dirty root=UUID=41d8f993-282a-48a5-b355-6f537a3a17ab ro quiet splash vt.handoff=7

$ cat /var/log/kern.log:

Jun 7 21:30:28 rct14s kernel: [ 1211.044086] WARNING: CPU: 3 PID: 7362 at drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dmub_psr.c:226 dmub_psr_enable+0x10b/0x120 [amdgpu]
Jun 7 21:30:28 rct14s kernel: [ 1211.044741] Modules linked in: tls ccm michael_mic xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables libcrc32c nfnetlink rfcomm snd_seq_dummy snd_hrtimer nvme_fabrics cmac algif_hash algif_skcipher af_alg bnep qrtr_mhi amdgpu qrtr ath11k_pci snd_soc_dmic snd_acp6x_pdm_dma snd_soc_acp6x_mach snd_sof_amd_rembrandt snd_sof_amd_renoir joydev ath11k snd_sof_amd_acp snd_sof_pci snd_sof_xtensa_dsp snd_sof intel_rapl_msr intel_rapl_common btusb btrtl edac_mce_amd snd_ctl_led btbcm iommu_v2 snd_hda_codec_realtek qmi_helpers btintel drm_buddy gpu_sched btmtk kvm_amd snd_hda_codec_generic snd_sof_utils mac80211 snd_hda_codec_hdmi drm_suballoc_helper bluetooth uvcvideo drm_ttm_helper kvm snd_hda_intel snd_soc_core ttm binfmt_misc snd_intel_dspcfg videobuf2_vmalloc snd_intel_sdw_acpi uvc snd_hda_codec videobuf2_memops drm_display_helper videobuf2_v4l2 snd_compress videodev snd_hda_core ac97_bus irqbypass cec crct10dif_pclmul
Jun 7 21:30:28 rct14s kernel: [ 1211.044873] snd_pcm_dmaengine polyval_clmulni snd_hwdep snd_pci_ps rc_core polyval_generic ghash_clmulni_intel snd_rpl_pci_acp6x sha512_ssse3 snd_seq_midi thinkpad_acpi snd_acp_pci aesni_intel snd_seq_midi_event crypto_simd drm_kms_helper snd_rawmidi videobuf2_common nvram ecdh_generic snd_pci_acp6x input_leds cryptd cfg80211 snd_pcm ecc think_lmi i2c_algo_bit ledtrig_audio nls_iso8859_1 rapl mc serio_raw snd_seq hid_multitouch firmware_attributes_class platform_profile wmi_bmof snd_pci_acp5x syscopyarea ucsi_acpi snd_seq_device snd_rn_pci_acp3x sysfillrect typec_ucsi ccp k10temp snd_timer snd_acp_config libarc4 sysimgblt snd_soc_acpi mhi typec snd snd_pci_acp3x sch_fq_codel soundcore mac_hid amd_pmc acpi_tad overlay iptable_filter ip6table_filter ip6_tables br_netfilter bridge stp llc arp_tables drm msr parport_pc ppdev lp parport ramoops pstore_blk reed_solomon pstore_zone efi_pstore ip_tables x_tables autofs4 nvme hid_generic thunderbolt psmouse crc32_pclmul nvme_core xhci_pci i2c_hid_acpi i2c_piix4
Jun 7 21:30:28 rct14s kernel: [ 1211.045018] xhci_pci_renesas i2c_hid nvme_common video hid wmi
Jun 7 21:30:28 rct14s kernel: [ 1211.045030] CPU: 3 PID: 7362 Comm: kworker/3:2H Not tainted 6.4.0-rc5patch_541535-dirty #1
Jun 7 21:30:28 rct14s kernel: [ 1211.045035] Hardware name: LENOVO 21CQCTO1WW/21CQCTO1WW, BIOS R22ET60W (1.30 ) 02/09/2023
Jun 7 21:30:28 rct14s kernel: [ 1211.045039] Workqueue: events_highpri dm_irq_work_func [amdgpu]
Jun 7 21:30:28 rct14s kernel: [ 1211.045...

[Roemer Claasen (rclaasen)]

No luck running with the patch and without "amdgpu.dcdebugmask=0x10", sadly.

There is still occasional screen flickering, and sometimes (once every 15 mimutes or so) a blank screen.

Then after a few hours of use, the display froze completely, and I could only reclaim control through 1) suspend and 2) TTY1. See kern.log below.

$ cat /var/log/kern.log:

Jun 7 23:32:11 rct14s kernel: [ 8513.360433] amdgpu 0000:33:00.0: [drm] *ERROR* [CRTC:72:crtc-0] flip_done timed out
Jun 7 23:32:56 rct14s kernel: [ 8558.928374] amdgpu 0000:33:00.0: [drm] *ERROR* flip_done timed out
Jun 7 23:32:56 rct14s kernel: [ 8558.928380] amdgpu 0000:33:00.0: [drm] *ERROR* [CRTC:72:crtc-0] commit wait timed out
Jun 7 23:33:07 rct14s kernel: [ 8569.168721] amdgpu 0000:33:00.0: [drm] *ERROR* flip_done timed out
Jun 7 23:33:07 rct14s kernel: [ 8569.168728] amdgpu 0000:33:00.0: [drm] *ERROR* [PLANE:55:plane-3] commit wait timed out
Jun 7 23:33:07 rct14s kernel: [ 8569.168816] ------------[ cut here ]------------
Jun 7 23:33:07 rct14s kernel: [ 8569.168817] WARNING: CPU: 4 PID: 1109 at drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:8145 amdgpu_dm_atomic_commit_tail+0x3b30/0x41f0 [amdgpu]
Jun 7 23:33:07 rct14s kernel: [ 8569.169357] Modules linked in: tls ccm michael_mic xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables libcrc32c nfnetlink rfcomm snd_seq_dummy snd_hrtimer nvme_fabrics cmac algif_hash algif_skcipher af_alg bnep qrtr_mhi amdgpu qrtr ath11k_pci snd_soc_dmic snd_acp6x_pdm_dma snd_soc_acp6x_mach snd_sof_amd_rembrandt snd_sof_amd_renoir joydev ath11k snd_sof_amd_acp snd_sof_pci snd_sof_xtensa_dsp snd_sof intel_rapl_msr intel_rapl_common btusb btrtl edac_mce_amd snd_ctl_led btbcm iommu_v2 snd_hda_codec_realtek qmi_helpers btintel drm_buddy gpu_sched btmtk kvm_amd snd_hda_codec_generic snd_sof_utils mac80211 snd_hda_codec_hdmi drm_suballoc_helper bluetooth uvcvideo drm_ttm_helper kvm snd_hda_intel snd_soc_core ttm binfmt_misc snd_intel_dspcfg videobuf2_vmalloc snd_intel_sdw_acpi uvc snd_hda_codec videobuf2_memops drm_display_helper videobuf2_v4l2 snd_compress videodev snd_hda_core ac97_bus irqbypass cec crct10dif_pclmul
Jun 7 23:33:07 rct14s kernel: [ 8569.169428] snd_pcm_dmaengine polyval_clmulni snd_hwdep snd_pci_ps rc_core polyval_generic ghash_clmulni_intel snd_rpl_pci_acp6x sha512_ssse3 snd_seq_midi thinkpad_acpi snd_acp_pci aesni_intel snd_seq_midi_event crypto_simd drm_kms_helper snd_rawmidi videobuf2_common nvram ecdh_generic snd_pci_acp6x input_leds cryptd cfg80211 snd_pcm ecc think_lmi i2c_algo_bit ledtrig_audio nls_iso8859_1 rapl mc serio_raw snd_seq hid_multitouch firmware_attributes_class platform_profile wmi_bmof snd_pci_acp5x syscopyarea ucsi_acpi snd_seq_device snd_rn_pci_acp3x sysfillrect typec_ucsi ccp k10temp snd_timer snd_acp_config libarc4 sysimgblt snd_soc_acpi mhi typec snd snd_pci_acp3x sch_fq_codel soundcore mac_hid amd_pmc acpi_tad overlay iptable_filter ip6table_filter ip6_tables br_netfilter bridge stp llc arp_tables drm msr parport_pc ppdev lp parport ramoops pstore_blk reed_solomon pstore_zone efi_pstore ip_tables x_tabl...

[Gert Karpelin (gkarpelin)]

I have a similar problem with Xubuntu and kernel version linux-image-6.5.0-9-generic. Adding "amdgpu.dcdebugmask=0x10" to /etc/default/grub fixes the flickering screen.

OS: Xubuntu 23.10 x86_64
21F8003HMX ThinkPad T14s Gen 4
CPU: AMD Ryzen 7 PRO 7840U w/ Radeon

[Mario Limonciello (superm1)]

Can you please share your kernel log from a boot that had the failure, and without that parameter in place share the output of this script?
https://gitlab.freedesktop.org/drm/amd/-/blob/master/scripts/psr.py

[Gert Karpelin (gkarpelin)]

DRI device 0 DMCUB F/W version: 0x08002300
○ PSR 2 with Y coordinates (eDP 1.4a) [3]
○ Sink OUI: Parade
○ resv_40f: 01
○ ID String: 08-03
○ PSR Status: 00-00-02

[Gert Karpelin (gkarpelin)]

kernel log from boot

[Mario Limonciello (superm1)]

Sorry for delay looking at this. I might have not been clear. That script needs to be run after the error has occurred. I don't see the error in this kernel log.

[Philip (phillau)]

Hi,
has the same problem over the whole last week. Tried different distros.
I‘ve read that the kernel parameter solves it?
May e I try ubuntu again tomorrow with this kernel parameter.
I used arch and had the black screen problem. Maybe this kernel parameter fixes the problems on arch as well.

[Philip (phillau)]

I added the parameter now and will later tell how it is going.

For now it feels buttery smooth!

I couldn‘t use „sudo update-grub“.
I needed to use „sudo grub-mkconfig -o /boot/grub/grub.cfg“ to update grub.

[Gert Karpelin (gkarpelin)]

I removed this parameter"amdgpu.dcdebugmask=0x10" from /etc/default/grub yesterday.
There is still occasional screen flickering, but no (once every 15 minutes or so) a blank screen.

I will continue testing

[Gert Karpelin (gkarpelin)]

To clarify, I had this blank screen problem before as well.

[zhilong hwang (vzhilong)]

I met the bug, only 'amdgpu.dcdebugmask=0x10' can solved it.

I have tested the lastest kernel.

[Timo Aaltonen (tjaalton)]

oem-6.1 is about to be EOL