Not so good on reboot.  External monitor came on first boot after changing
/etc/default/grub but not for subsequent reboots.  Attached are dmesg
results for several reboots.

Linux lt9 5.10.0-051000drmtip20201228-generic #202012280203 SMP Mon Dec 28
02:08:22 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

On Tue, Dec 29, 2020 at 7:28 PM John Dunlap <email address hidden> wrote:

> Hi Koba, Very good so far.  Rebooted with both external and internal
> displays running although in wrong modes which I changed.  Will see how it
> reboots shortly.  -- John
>
> dunlap@lt9:~$ uname -a
> Linux lt9 5.10.0-051000drmtip20201228-generic #202012280203 SMP Mon Dec 28
> 02:08:22 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
> dunlap@lt9:~$
>
> On Tue, Dec 29, 2020 at 7:10 PM koba <email address hidden> wrote:
>
>> @John,
>> Could you please try this default cmd in grub? and please update the dmesg
>> GRUB_CMDLINE_LINUX_DEFAULT="quiet splash drm.debug=0x11e log_buf_len=16M"
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1899882
>>
>> Title:
>>   hdmi monitor on
>>
>> Status in linux package in Ubuntu:
>>   Fix Committed
>>
>> Bug description:
>>   XPS 13 9300 -- 50H3P53 -- Dell laptop
>>   WD19TB ------- 4BWNW43 -- Dell Thunderbolt dock
>>   S2319HS ------ B4TYZ13 -- Dell 23" external monitor
>>
>>   External monitor remains black when waking system after suspending.
>>   Works OK when log out then log in or when reboot.
>>   Using HDMI cable from dock to monitor.
>>
>>   From /var/log/syslog:
>>
>>   Oct 14 21:09:41 lt9 kernel: [32059.746520] ------------[ cut here
>> ]------------
>>   Oct 14 21:09:41 lt9 kernel: [32059.746524] WARN_ON(is_mst && (port ==
>> PORT_A || port == PORT_E))
>>   Oct 14 21:09:41 lt9 kernel: [32059.746674] WARNING: CPU: 6 PID: 1221 at
>> drivers/gpu/drm/i915/display/intel_ddi.c:3179
>> intel_ddi_pre_enable_dp.isra.0+0x20f/0x430 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.746676] Modules linked in: ccm usblp
>> ftdi_sio usbserial snd_usb_audio snd_usbmidi_lib rfcomm typec_displayport
>> cdc_ether usbnet r8152 mii cmac algif_hash algif_skcipher af_al
>>   g bnep btusb btrtl btbcm btintel uvcvideo videobuf2_vmalloc
>> videobuf2_memops bluetooth videobuf2_v4l2 videobuf2_common videodev mc
>> ecdh_generic ecc nls_iso8859_1 snd_sof_pci snd_sof_intel_hda_common
>> snd_soc_hd
>>   ac_hda snd_hda_codec_hdmi snd_sof_intel_hda snd_sof_intel_byt
>> snd_sof_intel_ipc snd_sof snd_sof_xtensa_dsp snd_hda_ext_core
>> snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_compress
>> snd_hda_codec_realtek
>>    ac97_bus snd_pcm_dmaengine snd_hda_codec_generic snd_hda_intel
>> mei_hdcp snd_intel_dspcfg dell_laptop snd_hda_codec joydev ledtrig_audio
>> intel_rapl_msr snd_hda_core snd_hwdep x86_pkg_temp_thermal intel_powercl
>>   amp snd_pcm coretemp kvm_intel kvm snd_seq_midi snd_seq_midi_event
>> snd_rawmidi crct10dif_pclmul ghash_clmulni_intel dell_wmi snd_seq
>> aesni_intel dell_smbios crypto_simd dcdbas cryptd glue_helper rapl
>>   Oct 14 21:09:41 lt9 kernel: [32059.746719]  intel_cstate iwlmvm
>> input_leds serio_raw mac80211 snd_seq_device intel_wmi_thunderbolt wmi_bmof
>> dell_wmi_descriptor snd_timer libarc4 snd hid_sensor_als hid_sensor_t
>>   rigger industrialio_triggered_buffer iwlwifi kfifo_buf
>> hid_sensor_iio_common rtsx_pci_ms 8250_dw memstick soundcore industrialio
>> ucsi_acpi processor_thermal_device intel_rapl_common mei_me typec_ucsi
>> cros_ec_i
>>   shtp hid_multitouch mei cfg80211 cros_ec intel_soc_dts_iosf typec
>> int3403_thermal mac_hid int340x_thermal_zone int3400_thermal intel_hid
>> acpi_thermal_rel sparse_keymap acpi_pad acpi_tad sch_fq_codel parport_pc
>>    ppdev lp parport ip_tables x_tables autofs4 btrfs zstd_compress usbhid
>> raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx
>> xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_sensor_
>>   hub hid_generic intel_ishtp_loader intel_ishtp_hid rtsx_pci_sdmmc i915
>> crc32_pclmul rtsx_pci psmouse nvme i2c_algo_bit drm_kms_helper
>> intel_lpss_pci i2c_i801 intel_lpss nvme_core syscopyarea idma64
>>   Oct 14 21:09:41 lt9 kernel: [32059.746764]  sysfillrect virt_dma
>> sysimgblt fb_sys_fops intel_ish_ipc thunderbolt drm intel_ishtp wmi i2c_hid
>> hid video pinctrl_icelake pinctrl_intel
>>   Oct 14 21:09:41 lt9 kernel: [32059.746778] CPU: 6 PID: 1221 Comm: Xorg
>> Tainted: G        W         5.4.0-48-generic #52-Ubuntu
>>   Oct 14 21:09:41 lt9 kernel: [32059.746780] Hardware name: Dell Inc. XPS
>> 13 9300/0RMFN5, BIOS 1.2.0 08/13/2020
>>   Oct 14 21:09:41 lt9 kernel: [32059.746843] RIP:
>> 0010:intel_ddi_pre_enable_dp.isra.0+0x20f/0x430 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.746847] Code: ff ff 83 f8 0a bf 00
>> 00 00 00 49 0f 44 fc 48 89 7d c0 e9 4b fe ff ff 48 c7 c6 e0 0a 76 c0 48 c7
>> c7 43 79 77 c0 e8 0c c5 bd db <0f> 0b e9 ae fe ff ff 41 8b 54 24 70 8b 75
>> a8 4c 89 e7 e8 8a c7 ff
>>   Oct 14 21:09:41 lt9 kernel: [32059.746849] RSP: 0018:ffffb3bf01253850
>> EFLAGS: 00010282
>>   Oct 14 21:09:41 lt9 kernel: [32059.746852] RAX: 0000000000000000 RBX:
>> ffff9f1eebeca000 RCX: 0000000000000000
>>   Oct 14 21:09:41 lt9 kernel: [32059.746854] RDX: 0000000000000035 RSI:
>> ffffffff9dd955d5 RDI: 0000000000000246
>>   Oct 14 21:09:41 lt9 kernel: [32059.746855] RBP: ffffb3bf012538a8 R08:
>> ffffffff9dd955a0 R09: 0000000000000035
>>   Oct 14 21:09:41 lt9 kernel: [32059.746857] R10: ffffffff9dd95980 R11:
>> 000000009dd9559f R12: ffff9f1eebeca000
>>   Oct 14 21:09:41 lt9 kernel: [32059.746858] R13: ffff9f1e1bb67000 R14:
>> ffff9f1eebb80000 R15: ffff9f1eebeca120
>>   Oct 14 21:09:41 lt9 kernel: [32059.746861] FS:  00007fd341ab0a80(0000)
>> GS:ffff9f1eff780000(0000) knlGS:0000000000000000
>>   Oct 14 21:09:41 lt9 kernel: [32059.746863] CS:  0010 DS: 0000 ES: 0000
>> CR0: 0000000080050033
>>   Oct 14 21:09:41 lt9 kernel: [32059.746865] CR2: 00000177088fa000 CR3:
>> 000000046e046003 CR4: 0000000000760ee0
>>   Oct 14 21:09:41 lt9 kernel: [32059.746866] PKRU: 55555554
>>   Oct 14 21:09:41 lt9 kernel: [32059.746868] Call Trace:
>>   Oct 14 21:09:41 lt9 kernel: [32059.746930]  ?
>> intel_set_cpu_fifo_underrun_reporting+0x89/0x2a0 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.746984]
>> intel_ddi_pre_enable+0x98/0x340 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747000]  ?
>> drm_dp_mst_topology_put_port+0x27/0x40 [drm_kms_helper]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747053]
>> intel_mst_pre_enable_dp+0x9a/0x150 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747109]
>> intel_encoders_pre_enable.isra.0+0x6b/0x80 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747163]
>> haswell_crtc_enable+0x84/0x450 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747232]  ?
>> intel_pipe_update_end+0x85/0x1b0 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747302]
>> intel_update_crtc+0x35e/0x3e0 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747368]
>> skl_update_crtcs+0x24f/0x2c0 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747436]
>> intel_atomic_commit_tail+0x3eb/0x12e0 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747442]  ?
>> flush_workqueue_prep_pwqs+0x12e/0x140
>>   Oct 14 21:09:41 lt9 kernel: [32059.747447]  ?
>> flush_workqueue+0x193/0x420
>>   Oct 14 21:09:41 lt9 kernel: [32059.747514]  ?
>> intel_atomic_commit_ready+0x4d/0x54 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747580]
>> intel_atomic_commit+0x284/0x2b0 [i915]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747615]  drm_atomic_commit+0x4a/0x50
>> [drm]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747636]
>> drm_atomic_connector_commit_dpms+0xdf/0x100 [drm]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747660]
>> drm_mode_obj_set_property_ioctl+0x156/0x2a0 [drm]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747684]  ?
>> drm_connector_set_obj_prop+0x90/0x90 [drm]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747705]
>> drm_connector_property_set_ioctl+0x3b/0x60 [drm]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747722]  drm_ioctl_kernel+0xae/0xf0
>> [drm]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747739]  drm_ioctl+0x234/0x3d0 [drm]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747758]  ?
>> drm_connector_set_obj_prop+0x90/0x90 [drm]
>>   Oct 14 21:09:41 lt9 kernel: [32059.747764]  ? __switch_to_asm+0x40/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747767]  ? __switch_to_asm+0x34/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747769]  ? __switch_to_asm+0x40/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747772]  ? __switch_to_asm+0x34/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747775]  ? __switch_to_asm+0x40/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747777]  ? __switch_to_asm+0x34/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747780]  ? __switch_to_asm+0x40/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747782]  ? __switch_to_asm+0x34/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747785]  ? __switch_to_asm+0x40/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747787]  ? __switch_to_asm+0x34/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747790]  ? __switch_to_asm+0x40/0x70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747794]  ? __switch_to+0x1b2/0x470
>>   Oct 14 21:09:41 lt9 kernel: [32059.747799]  do_vfs_ioctl+0x407/0x670
>>   Oct 14 21:09:41 lt9 kernel: [32059.747801]  ? __schedule+0x2eb/0x740
>>   Oct 14 21:09:41 lt9 kernel: [32059.747804]  ksys_ioctl+0x67/0x90
>>   Oct 14 21:09:41 lt9 kernel: [32059.747807]  __x64_sys_ioctl+0x1a/0x20
>>   Oct 14 21:09:41 lt9 kernel: [32059.747811]  do_syscall_64+0x57/0x190
>>   Oct 14 21:09:41 lt9 kernel: [32059.747815]
>> entry_SYSCALL_64_after_hwframe+0x44/0xa9
>>   Oct 14 21:09:41 lt9 kernel: [32059.747817] RIP: 0033:0x7fd341e1050b
>>   Oct 14 21:09:41 lt9 kernel: [32059.747821] Code: 0f 1e fa 48 8b 05 85
>> 39 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3
>> 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 55 39
>> 0d 00 f7 d8 64 89 01 48
>>   Oct 14 21:09:41 lt9 kernel: [32059.747822] RSP: 002b:00007ffdbeeafca8
>> EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>>   Oct 14 21:09:41 lt9 kernel: [32059.747825] RAX: ffffffffffffffda RBX:
>> 00007ffdbeeafce0 RCX: 00007fd341e1050b
>>   Oct 14 21:09:41 lt9 kernel: [32059.747826] RDX: 00007ffdbeeafce0 RSI:
>> 00000000c01064ab RDI: 000000000000000e
>>   Oct 14 21:09:41 lt9 kernel: [32059.747827] RBP: 00000000c01064ab R08:
>> 000055884cdb3060 R09: 0000000000000000
>>   Oct 14 21:09:41 lt9 kernel: [32059.747828] R10: 000055884cdb3060 R11:
>> 0000000000000246 R12: 000055884db5ac70
>>   Oct 14 21:09:41 lt9 kernel: [32059.747830] R13: 000000000000000e R14:
>> 000055884cdb2a20 R15: 000055884ca02138
>>   Oct 14 21:09:41 lt9 kernel: [32059.747833] ---[ end trace
>> 21c6e0ef255ea00b ]---
>>
>>   ProblemType: Bug
>>   DistroRelease: Ubuntu 20.04
>>   Package: linux-image-5.4.0-48-generic 5.4.0-48.52
>>   ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
>>   Uname: Linux 5.4.0-48-generic x86_64
>>   ApportVersion: 2.20.11-0ubuntu27.8
>>   Architecture: amd64
>>   AudioDevicesInUse:
>>    USER        PID ACCESS COMMAND
>>    /dev/snd/controlC1:  dunlap     2447 F.... pulseaudio
>>    /dev/snd/controlC0:  dunlap     2447 F.... pulseaudio
>>   CasperMD5CheckResult: skip
>>   CurrentDesktop: XFCE
>>   Date: Wed Oct 14 21:44:32 2020
>>   DistributionChannelDescriptor:
>>    # This is the distribution channel descriptor for the OEM CDs
>>    # For more information see
>> http://wiki.ubuntu.com/DistributionChannelDescriptor
>>    canonical-oem-somerville-focal-amd64-20200502-85
>>   InstallationDate: Installed on 2020-08-04 (71 days ago)
>>   InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary
>> 20200502-05:58
>>   MachineType: Dell Inc. XPS 13 9300
>>   ProcFB: 0 i915drmfb
>>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic
>> root=UUID=2d9ccdcb-a33b-4e1c-be69-0390b3405c08 ro quiet splash vt.handoff=7
>>   RelatedPackageVersions:
>>    linux-restricted-modules-5.4.0-48-generic N/A
>>    linux-backports-modules-5.4.0-48-generic  N/A
>>    linux-firmware                            1.187.3
>>   SourcePackage: linux
>>   UpgradeStatus: No upgrade log present (probably fresh install)
>>   dmi.bios.date: 08/13/2020
>>   dmi.bios.vendor: Dell Inc.
>>   dmi.bios.version: 1.2.0
>>   dmi.board.name: 0RMFN5
>>   dmi.board.vendor: Dell Inc.
>>   dmi.board.version: A00
>>   dmi.chassis.type: 10
>>   dmi.chassis.vendor: Dell Inc.
>>   dmi.modalias:
>> dmi:bvnDellInc.:bvr1.2.0:bd08/13/2020:svnDellInc.:pnXPS139300:pvr:rvnDellInc.:rn0RMFN5:rvrA00:cvnDellInc.:ct10:cvr:
>>   dmi.product.family: XPS
>>   dmi.product.name: XPS 13 9300
>>   dmi.product.sku: 096D
>>   dmi.sys.vendor: Dell Inc.
>>
>> To manage notifications about this bug go to:
>>
>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1899882/+subscriptions
>>
>