Also experiencing this bug. Freshly installed 18.04 on Acer N2620G thin client (Celeron 887/i915). Have upgraded system to latest release. Experiencing minor anomalies in video.
[ 17.595601] ------------[ cut here ]------------ [ 17.595603] Could not determine valid watermarks for inherited state [ 17.595695] WARNING: CPU: 1 PID: 300 at /build/linux-UDHJtG/linux-4.15.0/drivers/gpu/drm/i915/intel_display.c:14537 intel_modeset_init+0xfcf/0x1010 [i915] [ 17.595696] Modules linked in: btintel i915(+) wmi_bmof bluetooth arc4 snd_seq_midi snd_seq_midi_event rtsx_pci_ms ecdh_generic serio_raw drm_kms_helper ath9k ath9k_common ath9k_hw snd_rawmidi memsti$ [ 17.595727] CPU: 1 PID: 300 Comm: systemd-udevd Not tainted 4.15.0-96-generic #97-Ubuntu [ 17.595729] Hardware name: Acer Veriton N2620G/Veriton N2620G, BIOS P21-A3 01/09/2013 [ 17.595786] RIP: 0010:intel_modeset_init+0xfcf/0x1010 [i915] [ 17.595788] RSP: 0018:ffffbae000b2b9b0 EFLAGS: 00010286 [ 17.595790] RAX: 0000000000000000 RBX: ffff945b970f0000 RCX: 0000000000000006 [ 17.595792] RDX: 0000000000000007 RSI: 0000000000000096 RDI: ffff945b9f316490 [ 17.595793] RBP: ffffbae000b2ba40 R08: 000000000000033c R09: 0000000000000004 [ 17.595794] R10: 0000000000000040 R11: 0000000000000001 R12: ffff945b927f8000 [ 17.595796] R13: ffff945b91fa9000 R14: 00000000ffffffea R15: ffff945b970f0358 [ 17.595798] FS: 00007fe153334680(0000) GS:ffff945b9f300000(0000) knlGS:0000000000000000 [ 17.595799] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.595801] CR2: 00007ff7212f6080 CR3: 00000001179e4005 CR4: 00000000000606e0 [ 17.595802] Call Trace: [ 17.595854] i915_driver_load+0xa73/0xe60 [i915] [ 17.595900] i915_pci_probe+0x42/0x70 [i915] [ 17.595905] local_pci_probe+0x47/0xa0 [ 17.595908] pci_device_probe+0x10e/0x1c0 [ 17.595913] driver_probe_device+0x30c/0x490 [ 17.595916] __driver_attach+0xcc/0xf0 [ 17.595919] ? driver_probe_device+0x490/0x490 [ 17.595922] bus_for_each_dev+0x70/0xc0 [ 17.595924] driver_attach+0x1e/0x20 [ 17.595927] bus_add_driver+0x1c7/0x270 [ 17.595929] ? 0xffffffffc0b42000 [ 17.595932] driver_register+0x60/0xe0 [ 17.595933] ? 0xffffffffc0b42000 [ 17.595936] __pci_register_driver+0x5a/0x60 [ 17.595994] i915_init+0x5c/0x5f [i915] [ 17.595998] do_one_initcall+0x52/0x19f [ 17.596001] ? __vunmap+0x8e/0xc0 [ 17.596005] ? _cond_resched+0x19/0x40 [ 17.596008] ? kmem_cache_alloc_trace+0xa6/0x1b0 [ 17.596012] ? do_init_module+0x27/0x213 [ 17.596015] do_init_module+0x5f/0x213 [ 17.596019] load_module+0x16bd/0x1f20 [ 17.596024] ? ima_post_read_file+0x96/0xa0 [ 17.596028] SYSC_finit_module+0xfc/0x120 [ 17.596031] ? SYSC_finit_module+0xfc/0x120 [ 17.596035] SyS_finit_module+0xe/0x10 [ 17.596038] do_syscall_64+0x73/0x130 [ 17.596042] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 17.596043] RIP: 0033:0x7fe152e50839 [ 17.596045] RSP: 002b:00007fffa59e2a58 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 17.596047] RAX: ffffffffffffffda RBX: 0000561b71253950 RCX: 00007fe152e50839 [ 17.596049] RDX: 0000000000000000 RSI: 00007fe152b2f145 RDI: 0000000000000015 [ 17.596050] RBP: 00007fe152b2f145 R08: 0000000000000000 R09: 00007fffa59e2b70 [ 17.596051] R10: 0000000000000015 R11: 0000000000000246 R12: 0000000000000000 [ 17.596052] R13: 0000561b71244a80 R14: 0000000000020000 R15: 0000561b71253950 [ 17.596054] Code: e9 46 fc ff ff 48 c7 c6 f7 0d ad c0 48 c7 c7 4f 01 ad c0 e8 94 b6 a4 de 0f 0b e9 73 fe ff ff 48 c7 c7 40 66 ae c0 e8 81 b6 a4 de <0f> 0b e9 4b fe ff ff 48 c7 c6 04 0e ad c0 48 c7 c7$ [ 17.596081] ---[ end trace 815509aa975c831e ]--- [ 17.602180] [drm] Initialized i915 1.6.0 20171023 for 0000:00:02.0 on minor 0 [ 17.602401] [Firmware Bug]: ACPI(GFX0) defines _DOD but not _DOS playaspec@Acer-N2620G:~$ cat /proc/version Linux version 4.15.0-96-generic (buildd@lgw01-amd64-004) (gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)) #97-Ubuntu SMP Wed Apr 1 03:25:46 UTC 2020 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1849713 Title: Warning message in logs after kernel update to linux- image-4.15.0-66-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1849713/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
