Comment 7 for bug 1849713

Same issue on my laptop:
[ 8.498382] ------------[ cut here ]------------
[ 8.498387] Could not determine valid watermarks for inherited state
[ 8.498448] WARNING: CPU: 2 PID: 185 at /build/linux-dWhjJj/linux-4.15.0/drivers/gpu/drm/i915/intel_display.c:14537 intel_modeset_init+0xfcf/0x1010 [i915]
[ 8.498452] Modules linked in: i915(+) i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt e1000e firewire_ohci fb_sys_fops firewire_core ptp ahci sdhci_pci libahci sdhci drm psmouse crc_itu_t pps_core wmi video
[ 8.498467] CPU: 2 PID: 185 Comm: systemd-udevd Not tainted 4.15.0-70-generic #79-Ubuntu
[ 8.498469] Hardware name: Hewlett-Packard HP EliteBook 8460p/161C, BIOS 68SCF Ver. F.22 12/22/2011
[ 8.498500] RIP: 0010:intel_modeset_init+0xfcf/0x1010 [i915]
[ 8.498502] RSP: 0018:ffffb641812439b0 EFLAGS: 00010286
[ 8.498504] RAX: 0000000000000000 RBX: ffff8b48aa4a0000 RCX: ffffffff92e63a28
[ 8.498506] RDX: 0000000000000001 RSI: 0000000000000082 RDI: 0000000000000246
[ 8.498509] RBP: ffffb64181243a40 R08: 00000000000002d0 R09: 0720072007200720
[ 8.498511] R10: 0000000000000040 R11: 0774077307200764 R12: ffff8b48b4975800
[ 8.498513] R13: ffff8b48b4a77800 R14: 00000000ffffffea R15: ffff8b48aa4a0358
[ 8.498516] FS: 00007f9abd978680(0000) GS:ffff8b48bdc80000(0000) knlGS:0000000000000000
[ 8.498518] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.498520] CR2: 0000558a93c705e8 CR3: 00000001b4846001 CR4: 00000000000606e0
[ 8.498522] Call Trace:
[ 8.498550] i915_driver_load+0xa73/0xe60 [i915]
[ 8.498574] i915_pci_probe+0x42/0x70 [i915]
[ 8.498578] local_pci_probe+0x47/0xa0
[ 8.498581] pci_device_probe+0x10e/0x1c0
[ 8.498585] driver_probe_device+0x30c/0x490
[ 8.498587] __driver_attach+0xcc/0xf0
[ 8.498589] ? driver_probe_device+0x490/0x490
[ 8.498592] bus_for_each_dev+0x70/0xc0
[ 8.498594] driver_attach+0x1e/0x20
[ 8.498596] bus_add_driver+0x1c7/0x270
[ 8.498598] ? 0xffffffffc065c000
[ 8.498601] driver_register+0x60/0xe0
[ 8.498602] ? 0xffffffffc065c000
[ 8.498604] __pci_register_driver+0x5a/0x60
[ 8.498634] i915_init+0x5c/0x5f [i915]
[ 8.498638] do_one_initcall+0x52/0x19f
[ 8.498641] ? __vunmap+0x8e/0xc0
[ 8.498644] ? _cond_resched+0x19/0x40
[ 8.498647] ? kmem_cache_alloc_trace+0xa6/0x1b0
[ 8.498651] ? do_init_module+0x27/0x213
[ 8.498654] do_init_module+0x5f/0x213
[ 8.498656] load_module+0x16bc/0x1f10
[ 8.498660] ? ima_post_read_file+0x96/0xa0
[ 8.498663] SYSC_finit_module+0xfc/0x120
[ 8.498666] ? SYSC_finit_module+0xfc/0x120
[ 8.498669] SyS_finit_module+0xe/0x10
[ 8.498672] do_syscall_64+0x73/0x130
[ 8.498675] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 8.498677] RIP: 0033:0x7f9abd482839
[ 8.498678] RSP: 002b:00007ffe7cb352a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 8.498681] RAX: ffffffffffffffda RBX: 0000558a93c54920 RCX: 00007f9abd482839
[ 8.498683] RDX: 0000000000000000 RSI: 00007f9abd161145 RDI: 0000000000000012
[ 8.498685] RBP: 00007f9abd161145 R08: 0000000000000000 R09: 00007ffe7cb353c0
[ 8.498687] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000
[ 8.498689] R13: 0000558a93c53540 R14: 0000000000020000 R15: 0000558a93c54920
[ 8.498692] Code: e9 46 fc ff ff 48 c7 c6 d7 ad 5e c0 48 c7 c7 2f a1 5e c0 e8 e4 18 53 d1 0f 0b e9 73 fe ff ff 48 c7 c7 b0 05 60 c0 e8 d1 18 53 d1 <0f> 0b e9 4b fe ff ff 48 c7 c6 e4 ad 5e c0 48 c7 c7 2f a1 5e c0
[ 8.498717] ---[ end trace f24500cb22744ab2 ]---