Fix the video can't output through WD19TB connected with TGL platform during cold-boot

Bug #1910211 reported by koba on 2021-01-05
This bug affects 1 person
Affects Status Importance Assigned to Milestone
HWE Next
linux (Ubuntu)
Status tracked in Hirsute
linux-oem-5.10 (Ubuntu)
Status tracked in Hirsute

Bug Description

After Apply the patches from, the TGL platform would have the failure rate(1/20) on outputting the video through WD19TB.

The patch is provided by Imre(
If there's no lttpr in the link chain, the DRM driver wouldn't configure the transparent mode again.

[Test Case]
1. Connected the WD19TB with the TGL platform and
connected the external monitor on WD19TB with HDMI/Displayport.
2. Don't plug the external monitor on the TGL platform, so there's only one monitor on WD19TB.
3. Cold boot the TGL platform.
4. Check the monitor can be blinked and the video can output to the monitor.

[Where problems could occur]
As per Imre's comment, this may be caused by the dock.
In the future if the WD19TB's firmware is updated, we may encounter the same issue again.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1910211

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
koba (kobako) on 2021-01-05
summary: - Fix that the video can't output through WD19TB connected with TGL
- platform
+ Fix the video can't output through WD19TB connected with TGL platform
+ during cold-boot
koba (kobako) on 2021-01-05
description: updated
affects: linux (Ubuntu) → linux-oem-5.10 (Ubuntu)
Changed in linux-oem-5.10 (Ubuntu Hirsute):
status: Incomplete → New
Changed in linux-oem-5.10 (Ubuntu Focal):
status: New → In Progress
assignee: nobody → koba (kobako)
Changed in linux (Ubuntu Hirsute):
status: New → In Progress
assignee: nobody → koba (kobako)
koba (kobako) on 2021-01-05
tags: added: oem-priority originate-from-1906626 somerville
Timo Aaltonen (tjaalton) on 2021-01-11
Changed in linux-oem-5.10 (Ubuntu Focal):
status: In Progress → Fix Committed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-oem-5.10 - 5.10.0-1011.12

linux-oem-5.10 (5.10.0-1011.12) focal; urgency=medium

  * focal/linux-oem-5.10: 5.10.0-1011.12 -proposed tracker (LP: #1913030)

  * Support CML-S CPU + TGP PCH (LP: #1909457)
    - Revert "UBUNTU: SAUCE: drm/i915/rkl: new rkl ddc map for different PCH"
    - drm/i915/dg1: gmbus pin mapping
    - drm/i915/dg1: Don't program PHY_MISC for PHY-C and PHY-D
    - drm/i915/dg1: add hpd interrupt handling
    - drm/i915/display/ehl: Limit eDP to HBR2
    - drm/i915/jsl: Split EHL/JSL platform info and PCI ids
    - drm/i915: Add PORT_TCn aliases to enum port
    - drm/i915: s/PORT_TC/TC_PORT_/
    - drm/i915/rkl: new rkl ddc map for different PCH
    - SAUCE: drm/i915/gen9_bc : Add TGP PCH support

  * backlight parsing for VBT 234+ (LP: #1912157)
    - drm/i915/vbt: Fix backlight parsing for VBT 234+
    - drm/i915/vbt: Update the version and expected size of
    - drm/i915/vbt: Add VRR VBT toggle

  * HD Audio Device PCI ID for the Intel Cometlake-R platform (LP: #1912427)
    - SAUCE: ALSA: hda: Add Cometlake-R PCI ID

 -- Timo Aaltonen <email address hidden> Mon, 25 Jan 2021 11:43:18 +0200

Changed in linux-oem-5.10 (Ubuntu Focal):
status: Fix Committed → Fix Released
koba (kobako) on 2021-02-02
Changed in linux (Ubuntu Focal):
status: New → Invalid
Changed in linux-oem-5.10 (Ubuntu Hirsute):
status: New → Invalid

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See for documentation how to enable and use -proposed. Thank you!

tags: added: verification-needed-focal
koba (kobako) on 2021-02-04
tags: added: verification-done-focal
removed: verification-needed-focal
Launchpad Janitor (janitor) wrote :
Download full text (20.7 KiB)

This bug was fixed in the package linux - 5.10.0-14.15

linux (5.10.0-14.15) hirsute; urgency=medium

  * hirsute/linux: 5.10.0-14.15 -proposed tracker (LP: #1913724)

  * Restore palm ejection on multi-input devices (LP: #1913520)
    - HID: multitouch: Apply MT_QUIRK_CONFIDENCE quirk for multi-input devices

  * intel-hid is not loaded on new Intel platform (LP: #1907160)
    - platform/x86: intel-hid: add Rocket Lake ACPI device ID

  * Hirsute update: v5.10.11 upstream stable release (LP: #1913430)
    - scsi: target: tcmu: Fix use-after-free of se_cmd->priv
    - mtd: rawnand: gpmi: fix dst bit offset when extracting raw payload
    - mtd: rawnand: nandsim: Fix the logic when selecting Hamming soft ECC engine
    - i2c: tegra: Wait for config load atomically while in ISR
    - i2c: bpmp-tegra: Ignore unknown I2C_M flags
    - platform/x86: ideapad-laptop: Disable touchpad_switch for ELAN0634
    - ALSA: seq: oss: Fix missing error check in snd_seq_oss_synth_make_info()
    - ALSA: hda/realtek - Limit int mic boost on Acer Aspire E5-575T
    - ALSA: hda/via: Add minimum mute flag
    - crypto: xor - Fix divide error in do_xor_speed()
    - dm crypt: fix copy and paste bug in crypt_alloc_req_aead
    - ACPI: scan: Make acpi_bus_get_device() clear return pointer on error
    - btrfs: don't get an EINTR during drop_snapshot for reloc
    - btrfs: do not double free backref nodes on error
    - btrfs: fix lockdep splat in btrfs_recover_relocation
    - btrfs: don't clear ret in btrfs_start_dirty_block_groups
    - btrfs: send: fix invalid clone operations when cloning from the same file
      and root
    - fs: fix lazytime expiration handling in __writeback_single_inode()
    - pinctrl: ingenic: Fix JZ4760 support
    - mmc: core: don't initialize block size from ext_csd if not present
    - mmc: sdhci-of-dwcmshc: fix rpmb access
    - mmc: sdhci-xenon: fix 1.8v regulator stabilization
    - mmc: sdhci-brcmstb: Fix mmc timeout errors on S5 suspend
    - dm: avoid filesystem lookup in dm_get_dev_t()
    - dm integrity: fix a crash if "recalculate" used without "internal_hash"
    - dm integrity: conditionally disable "recalculate" feature
    - drm/atomic: put state on error path
    - drm/syncobj: Fix use-after-free
    - drm/amdgpu: remove gpu info firmware of green sardine
    - drm/amd/display: DCN2X Find Secondary Pipe properly in MPO + ODM Case
    - drm/i915/gt: Prevent use of engine->wa_ctx after error
    - drm/i915: Check for rq->hwsp validity after acquiring RCU lock
    - ASoC: Intel: haswell: Add missing pm_ops
    - ASoC: rt711: mutex between calibration and power state changes
    - SUNRPC: Handle TCP socket sends with kernel_sendpage() again
    - HID: sony: select CONFIG_CRC32
    - dm integrity: select CRYPTO_SKCIPHER
    - x86/hyperv: Fix kexec panic/hang issues
    - scsi: ufs: Relax the condition of UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL
    - scsi: ufs: Correct the LUN used in eh_device_reset_handler() callback
    - scsi: qedi: Correct max length of CHAP secret
    - scsi: scsi_debug: Fix memleak in scsi_debug_init()
    - scsi: sd: Suppress spurious errors when WRITE SAME is being disabled
    - riscv: ...

Changed in linux (Ubuntu Hirsute):
status: In Progress → Fix Released
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