Although they all act a bit differently when restarting after suspend, none
of these kernels solve the problem:

Ubuntu, with Linux 5.6.0-1032-oem
Ubuntu, with Linux 5.6.0-1031-oem
Ubuntu, with Linux 5.4.0-52-generic
Ubuntu, with Linux 5.4.0-51-generic

The BIOS has been updated using:

XPS_13_9300_1.2.0.exe


On Sat, Oct 17, 2020 at 2:44 PM John Dunlap <email address hidden> wrote:

> When the two displays are mirrored the 5.4.0-51-generic kernel has come
> out of suspend mode correctly about 10 times without any failures.  I had
> trouble earlier with that kernel when the displays were not mirrored.  --
> John
>
> On Fri, Oct 16, 2020 at 10:19 AM John Dunlap <email address hidden>
> wrote:
>
>> dunlap@lt9:~/Desktop$ uname -a
>> Linux lt9 5.4.0-51-generic #56-Ubuntu SMP Mon Oct 5 14:28:49 UTC 2020
>> x86_64 x86_64 x86_64 GNU/Linux
>> dunlap@lt9:~/Desktop$
>>
>> The above kernel works better than the oem kernel.  5.4.0-51-generic
>> usually (but not always) responds correctly  from a suspend when I press
>> the shift key on the laptop to get a login banner.  The oem kernel has
>> failed that test three times, never responding correctly.  -- John
>>
>> On Fri, Oct 16, 2020 at 9:22 AM John Dunlap <email address hidden>
>> wrote:
>>
>>> The oem kernel failed to display both the laptop screen and the external
>>> monitor after a suspend.  However the mouse did move the pointer around the
>>> laptop screen.  The only solution seemed to be to power cycle.  -- John
>>>
>>> On Fri, Oct 16, 2020 at 8:32 AM John Dunlap <email address hidden>
>>> wrote:
>>>
>>>> So far so good with the oem kernel.  I should have included in symptoms
>>>> that the problem is intermittent. -- John
>>>>
>>>> On Thu, Oct 15, 2020 at 10:54 PM John Dunlap <email address hidden>
>>>> wrote:
>>>>
>>>>> Koba, Thanks.  Running oem kernel now. Testing in the morning. -- John
>>>>>
>>>>> On Thu, Oct 15, 2020 at 10:31 PM koba <email address hidden>
>>>>> wrote:
>>>>>
>>>>>> @John
>>>>>> #sudo apt update
>>>>>> #sudo apt install linux-oem-20.04
>>>>>>
>>>>>> --
>>>>>> 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:
>>>>>>   Confirmed
>>>>>>
>>>>>> 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
>>>>>>
>>>>>