Hi, this is ontop of Linus' tree from the 4th (lemme know if I should try the latest) on one of my test boxes: nouveau 0000:01:00.0: vgaarb: deactivate vga console Console: switching to colour dummy device 80x25 nouveau 0000:01:00.0: NVIDIA GT218 (0a8280b1) CE: hpet increased min_delta_ns to 20115 nsec nouveau 0000:01:00.0: bios: version 70.18.49.00.00 nouveau 0000:01:00.0: fb: 1024 MiB DDR3 nouveau 0000:01:00.0: DRM: VRAM: 1024 MiB nouveau 0000:01:00.0: DRM: GART: 1048576 MiB nouveau 0000:01:00.0: DRM: TMDS table version 2.0 nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies ------------[ cut here ]------------ nouveau 0000:01:00.0: drm_WARN_ON(!found_head) WARNING: CPU: 4 PID: 786 at drivers/gpu/drm/nouveau/dispnv50/disp.c:2731 nv50_display_init+0x28c/0x4f0 [nouveau] Modules linked in: nouveau(+) drm_ttm_helper ttm video drm_exec drm_gpuvm gpu_sched drm_display_helper wmi CPU: 4 PID: 786 Comm: systemd-udevd Not tainted 6.6.0+ #1 Hardware name: MICRO-STAR INTERNATIONAL CO.,LTD MS-7599/870-C45 (MS-7599), BIOS V1.15 03/04/2011 RIP: 0010:nv50_display_init+0x28c/0x4f0 [nouveau] Code: 4c 8b 6f 50 4d 85 ed 75 03 4c 8b 2f e8 6d 47 37 e1 48 c7 c1 4c 55 2d a0 48 89 c6 4c 89 ea 48 c7 c7 42 55 2d a0 e8 44 83 e8 e0 <0f> 0b 48 8b 43 08 49 39 c6 48 8d 58 f8 0f 85 41 ff ff ff 48 8d 7c RSP: 0018:ffffc9000031ba98 EFLAGS: 00010286 RAX: 000000000000002e RBX: ffff888100a21400 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffffc9000031b9b0 RDI: 0000000000000001 RBP: ffff888104eadad0 R08: ffff888136ffdfe8 R09: 0000000000000058 R10: 0000000000000289 R11: ffff888136401cd8 R12: ffff888104ead800 R13: ffff888100abddf0 R14: ffff888104eadab0 R15: 0000000000000000 FS: 00007fef9c8e38c0(0000) GS:ffff88812f500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fef9ce9d258 CR3: 000000010330e000 CR4: 00000000000006f0 Call Trace: <TASK> ? __warn+0x97/0x160 ? nv50_display_init+0x28c/0x4f0 [nouveau] ? report_bug+0x1ec/0x200 ? handle_bug+0x3c/0x70 ? exc_invalid_op+0x1f/0x90 ? asm_exc_invalid_op+0x16/0x20 ? nv50_display_init+0x28c/0x4f0 [nouveau] ? nv50_display_init+0x28c/0x4f0 [nouveau] ? sched_set_fifo+0x46/0x60 nouveau_display_init+0xa0/0xd0 [nouveau] nouveau_drm_device_init+0x42a/0x990 [nouveau] nouveau_drm_probe+0x105/0x240 [nouveau] ? __pm_runtime_resume+0x68/0xa0 pci_device_probe+0xaa/0x140 really_probe+0xc2/0x2d0 __driver_probe_device+0x73/0x120 driver_probe_device+0x2c/0xb0 __driver_attach+0xa0/0x150 ? __device_attach_driver+0xc0/0xc0 bus_for_each_dev+0x67/0xa0 bus_add_driver+0x10e/0x210 driver_register+0x5c/0x120 ? 0xffffffffa0336000 do_one_initcall+0x44/0x200 ? kmalloc_trace+0x37/0xc0 do_init_module+0x64/0x230 init_module_from_file+0x8d/0xd0 idempotent_init_module+0x15a/0x210 __x64_sys_finit_module+0x67/0xb0 do_syscall_64+0x41/0xf0 entry_SYSCALL_64_after_hwframe+0x4b/0x53 RIP: 0033:0x7fef9cda5ee9 Code: 08 44 89 e0 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d f7 ee 0e 00 f7 d8 64 89 01 48 RSP: 002b:00007ffeb60299e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 000055b322ddf5a0 RCX: 00007fef9cda5ee9 RDX: 0000000000000000 RSI: 00007fef9cf45e2d RDI: 0000000000000012 RBP: 0000000000020000 R08: 0000000000000000 R09: 000055b322ddf690 R10: 0000000000000012 R11: 0000000000000246 R12: 00007fef9cf45e2d R13: 0000000000000000 R14: 000055b322dcb940 R15: 000055b322ddf5a0 </TASK> ---[ end trace 0000000000000000 ]--- [drm] Initialized nouveau 1.4.0 20120801 for 0000:01:00.0 on minor 0 fbcon: nouveaudrmfb (fb0) is primary device Console: switching to colour frame buffer device 210x65 nouveau 0000:01:00.0: [drm] fb0: nouveaudrmfb frame buffer device -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette