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: [ 1211.045632] RIP: 0010:dmub_psr_enable+0x10b/0x120 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.046182] Code: 48 2b 04 25 28 00 00 00 75 24 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d 31 c0 89 c2 89 c1 89 c6 89 c7 41 89 c0 c3 cc cc cc cc <0f> 0b eb cd e8 5c cb 89 d7 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 Jun 7 21:30:28 rct14s kernel: [ 1211.046186] RSP: 0018:ffffa13f8b907c80 EFLAGS: 00010246 Jun 7 21:30:28 rct14s kernel: [ 1211.046191] RAX: 0000000000000000 RBX: 00000000000003e9 RCX: 0000000000000000 Jun 7 21:30:28 rct14s kernel: [ 1211.046193] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 Jun 7 21:30:28 rct14s kernel: [ 1211.046195] RBP: ffffa13f8b907cf8 R08: 0000000000000000 R09: 0000000000000000 Jun 7 21:30:28 rct14s kernel: [ 1211.046197] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 Jun 7 21:30:28 rct14s kernel: [ 1211.046198] R13: ffff9499a513f4c0 R14: 0000000000000000 R15: ffff9499a52b8c00 Jun 7 21:30:28 rct14s kernel: [ 1211.046200] FS: 0000000000000000(0000) GS:ffff94a07dac0000(0000) knlGS:0000000000000000 Jun 7 21:30:28 rct14s kernel: [ 1211.046203] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jun 7 21:30:28 rct14s kernel: [ 1211.046205] CR2: 000055ffdb0e9040 CR3: 000000011bf0c000 CR4: 0000000000750ee0 Jun 7 21:30:28 rct14s kernel: [ 1211.046208] PKRU: 55555554 Jun 7 21:30:28 rct14s kernel: [ 1211.046209] Call Trace: Jun 7 21:30:28 rct14s kernel: [ 1211.046213] Jun 7 21:30:28 rct14s kernel: [ 1211.046218] ? show_regs+0x72/0x90 Jun 7 21:30:28 rct14s kernel: [ 1211.046229] ? dmub_psr_enable+0x10b/0x120 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.046666] ? __warn+0x8d/0x160 Jun 7 21:30:28 rct14s kernel: [ 1211.046672] ? dmub_psr_enable+0x10b/0x120 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.047113] ? report_bug+0x1bb/0x1d0 Jun 7 21:30:28 rct14s kernel: [ 1211.047122] ? handle_bug+0x46/0x90 Jun 7 21:30:28 rct14s kernel: [ 1211.047128] ? exc_invalid_op+0x19/0x80 Jun 7 21:30:28 rct14s kernel: [ 1211.047131] ? asm_exc_invalid_op+0x1b/0x20 Jun 7 21:30:28 rct14s kernel: [ 1211.047137] ? dmub_psr_enable+0x10b/0x120 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.047498] ? __pfx_dmub_psr_enable+0x10/0x10 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.047896] edp_set_psr_allow_active+0x1ed/0x2c0 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.048246] dp_handle_hpd_rx_irq+0x334/0x370 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.048611] dc_link_handle_hpd_rx_irq+0x26/0x40 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.048928] handle_hpd_rx_irq+0xe1/0x490 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.049259] ? __schedule+0x3da/0x15f0 Jun 7 21:30:28 rct14s kernel: [ 1211.049265] dm_irq_work_func+0x19/0x30 [amdgpu] Jun 7 21:30:28 rct14s kernel: [ 1211.049590] process_one_work+0x21f/0x440 Jun 7 21:30:28 rct14s kernel: [ 1211.049596] worker_thread+0x50/0x3f0 Jun 7 21:30:28 rct14s kernel: [ 1211.049599] ? __pfx_worker_thread+0x10/0x10 Jun 7 21:30:28 rct14s kernel: [ 1211.049601] kthread+0xf7/0x130 Jun 7 21:30:28 rct14s kernel: [ 1211.049607] ? __pfx_kthread+0x10/0x10 Jun 7 21:30:28 rct14s kernel: [ 1211.049610] ret_from_fork+0x2c/0x50 Jun 7 21:30:28 rct14s kernel: [ 1211.049617] Jun 7 21:30:28 rct14s kernel: [ 1211.049618] ---[ end trace 0000000000000000 ]---