Enable brightness control on HP DreamColor panel

Bug #1898865 reported by Kai-Heng Feng
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
HWE Next
New
Undecided
Unassigned
linux (Ubuntu)
Fix Released
Medium
Unassigned
Focal
Fix Released
Medium
Unassigned
Groovy
Fix Released
Medium
Unassigned
linux-oem-5.6 (Ubuntu)
Invalid
Undecided
Unassigned
Focal
Fix Released
Medium
Unassigned
Groovy
Invalid
Undecided
Unassigned

Bug Description

[Impact]
Brightness on HP DreamColor panel, which can be found on new HP Zbook
Studio, cannot be changed.

[Fix]
Let DRM know the panel should use DPCD instead of PWM to control
backlight.

[Test]
With the patch applied, we can change the brightness on HP Zbook Studio.

[Regression Potential]
If there's any panel in the quirk list depends on checking brightness
control capability then this change will have an impact. However it's
rather unlikely because it defeats the purpose of the quirk list.

Changed in linux-oem-5.6 (Ubuntu Groovy):
status: New → Invalid
Changed in linux (Ubuntu Focal):
importance: Undecided → Medium
Changed in linux (Ubuntu Groovy):
importance: Undecided → Medium
Changed in linux-oem-5.6 (Ubuntu Focal):
importance: Undecided → Medium
Changed in linux (Ubuntu Focal):
status: New → Confirmed
Changed in linux (Ubuntu Groovy):
status: New → Confirmed
Changed in linux-oem-5.6 (Ubuntu Focal):
status: New → Confirmed
tags: added: oem-priority originate-from-1898670 stella
Revision history for this message
Launchpad Janitor (janitor) wrote :
Download full text (10.1 KiB)

This bug was fixed in the package linux - 5.8.0-22.23

---------------
linux (5.8.0-22.23) groovy; urgency=medium

  * groovy/linux: 5.8.0-22.23 -proposed tracker (LP: #1899099)

  * Packaging resync (LP: #1786013)
    - update dkms package versions

  * oops in nvkm_udevice_info() [nouveau] (LP: #1898130)
    - drm/nouveau/device: return error for unknown chipsets

  * python3-venv is gone (LP: #1896801)
    - SAUCE: doc: remove python3-venv dependency

  * *-tools-common packages descriptions have typo "PGKVER" (LP: #1898903)
    - [Packaging] Fix typo in -tools template s/PGKVER/PKGVER/

  * Enable brightness control on HP DreamColor panel (LP: #1898865)
    - SAUCE: drm/i915/dpcd_bl: Skip testing control capability with force DPCD
      quirk
    - SAUCE: drm/dp: HP DreamColor panel brigntness fix

  * Groovy update: v5.8.14 upstream stable release (LP: #1898853)
    - io_uring: always delete double poll wait entry on match
    - btrfs: fix filesystem corruption after a device replace
    - mmc: sdhci: Workaround broken command queuing on Intel GLK based IRBIS
      models
    - USB: gadget: f_ncm: Fix NDP16 datagram validation
    - Revert "usbip: Implement a match function to fix usbip"
    - usbcore/driver: Fix specific driver selection
    - usbcore/driver: Fix incorrect downcast
    - usbcore/driver: Accommodate usbip
    - gpio: siox: explicitly support only threaded irqs
    - gpio: mockup: fix resource leak in error path
    - gpio: tc35894: fix up tc35894 interrupt configuration
    - gpio: amd-fch: correct logic of GPIO_LINE_DIRECTION
    - clk: samsung: Keep top BPLL mux on Exynos542x enabled
    - clk: socfpga: stratix10: fix the divider for the emac_ptp_free_clk
    - scsi: iscsi: iscsi_tcp: Avoid holding spinlock while calling getpeername()
    - i2c: i801: Exclude device from suspend direct complete optimization
    - Input: i8042 - add nopnp quirk for Acer Aspire 5 A515
    - iio: adc: qcom-spmi-adc5: fix driver name
    - ftrace: Move RCU is watching check after recursion check
    - tracing: Fix trace_find_next_entry() accounting of temp buffer size
    - memstick: Skip allocating card when removing host
    - drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config
    - xen/events: don't use chip_data for legacy IRQs
    - clocksource/drivers/timer-gx6605s: Fixup counter reload
    - vboxsf: Fix the check for the old binary mount-arguments struct
    - mt76: mt7915: use ieee80211_free_txskb to free tx skbs
    - libbpf: Remove arch-specific include path in Makefile
    - drivers/net/wan/hdlc_fr: Add needed_headroom for PVC devices
    - Revert "wlcore: Adding suppoprt for IGTK key in wlcore driver"
    - drm/sun4i: mixer: Extend regmap max_register
    - hv_netvsc: Cache the current data path to avoid duplicate call and message
    - net: dec: de2104x: Increase receive ring size for Tulip
    - rndis_host: increase sleep time in the query-response loop
    - nvme-pci: disable the write zeros command for Intel 600P/P3100
    - nvme-core: get/put ctrl and transport module in nvme_dev_open/release()
    - fuse: fix the ->direct_IO() treatment of iov_iter
    - drivers/net/wan/lapbether: Make skb->protocol co...

Changed in linux (Ubuntu Groovy):
status: Confirmed → Fix Released
Timo Aaltonen (tjaalton)
Changed in linux-oem-5.6 (Ubuntu Focal):
status: Confirmed → Fix Committed
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

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 https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags: added: verification-needed-focal
jeremyszu (os369510)
Changed in oem-priority:
assignee: nobody → jeremyszu (os369510)
tags: added: verification-done-focal
removed: verification-needed-focal
jeremyszu (os369510)
no longer affects: oem-priority
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-oem-5.6 - 5.6.0-1032.33

---------------
linux-oem-5.6 (5.6.0-1032.33) focal; urgency=medium

  * focal/linux-oem-5.6: 5.6.0-1032.33 -proposed tracker (LP: #1899926)

  * CVE-2020-12351 // CVE-2020-12352 // CVE-2020-24490
    - Bluetooth: Disable High Speed by default
    - Bluetooth: MGMT: Fix not checking if BT_HS is enabled
    - [Config] Disable BlueZ highspeed support

  * CVE-2020-12351
    - Bluetooth: L2CAP: Fix calling sk_filter on non-socket based channel

  * CVE-2020-12352
    - Bluetooth: A2MP: Fix not initializing all members

  * Lenovo ThinkBook 14-IML Touchpad not showing up in /proc/bus/input/devices
    (LP: #1853277)
    - i2c: core: Call i2c_acpi_install_space_handler() before
      i2c_acpi_register_devices()

  * [SRU]alsa: add Dell tgl soundwire machines support (LP: #1900069)
    - ALSA: hda: add autodetection for SoundWire
    - ASoC: Intel: common: add match table for TGL MAX98373 + RT5682 SoundWire
      driver
    - ASoC: Intel: soc-acpi: mirror CML and TGL configurations
    - ASoC: SOF: topology: send ipc for all found DAIs in sof_set_dai_config
    - ASoC: topology: set component dai_index to ipc dai config dai_index
    - ASoC: Intel: add codec name prefix to ACPI machine description
    - ASoC: Intel: sof_sdw: remove hard-coded codec_conf table
    - ASoC: Intel: sof_sdw_rt700: add codec prefix
    - ASoC: Intel: add support for new SoundWire hardware layout on TGL
    - ASoC: Intel: sof_sdw_rt711: remove hard-coded codec name
    - ASoC/soundwire: bus: use property to set interrupt masks
    - soundwire: bus: filter-out unwanted interrupt reports
    - soundwire: slave: add first_interrupt_done status
    - soundwire: bus: use quirk to filter out invalid parity errors
    - ASoC: codecs: realtek-soundwire: ignore initial PARITY errors

  * Fix system reboot when disconnecting WiFi (LP: #1899726)
    - iwlwifi: msix: limit max RX queues for 9000 family

  * Improve descriptions for XFAIL cases in kselftests/net/psock_snd
    (LP: #1900088)
    - selftests/net: improve descriptions for XFAIL cases in psock_snd.sh

  * Fix broken MSI interrupt after HDA controller was suspended (LP: #1899586)
    - ALSA: hda: Skip controller resume if not needed
    - ALSA: hda: Always use jackpoll helper for jack update after resume
    - SAUCE: ALSA: hda: fix jack detection with Realtek codecs when in D3
    - ALSA: hda - let hs_mic be picked ahead of hp_mic

  * Enable brightness control on HP DreamColor panel (LP: #1898865)
    - drm/i915/dpcd_bl: Unbreak enable_dpcd_backlight modparam
    - SAUCE: drm/i915/dpcd_bl: Skip testing control capability with force DPCD
      quirk
    - SAUCE: drm/dp: HP DreamColor panel brigntness fix

  * alsa/hda/realtek - The front Mic on a HP machine doesn't work (LP: #1899508)
    - SAUCE: ALSA: hda/realtek - The front Mic on a HP machine doesn't work

 -- Timo Aaltonen <email address hidden> Fri, 16 Oct 2020 14:40:28 +0300

Changed in linux-oem-5.6 (Ubuntu Focal):
status: Fix Committed → Fix Released
Stefan Bader (smb)
Changed in linux (Ubuntu Focal):
status: Confirmed → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :
Download full text (78.9 KiB)

This bug was fixed in the package linux - 5.4.0-56.62

---------------
linux (5.4.0-56.62) focal; urgency=medium

  * focal/linux: 5.4.0-56.62 -proposed tracker (LP: #1905300)

  * CVE-2020-4788
    - selftests/powerpc: rfi_flush: disable entry flush if present
    - powerpc/64s: flush L1D on kernel entry
    - powerpc/64s: flush L1D after user accesses
    - selftests/powerpc: entry flush test

linux (5.4.0-55.61) focal; urgency=medium

  * focal/linux: 5.4.0-55.61 -proposed tracker (LP: #1903175)

  * Update kernel packaging to support forward porting kernels (LP: #1902957)
    - [Debian] Update for leader included in BACKPORT_SUFFIX

  * Avoid double newline when running insertchanges (LP: #1903293)
    - [Packaging] insertchanges: avoid double newline

  * EFI: Fails when BootCurrent entry does not exist (LP: #1899993)
    - efivarfs: Replace invalid slashes with exclamation marks in dentries.

  * CVE-2020-14351
    - perf/core: Fix race in the perf_mmap_close() function

  * raid10: Block discard is very slow, causing severe delays for mkfs and
    fstrim operations (LP: #1896578)
    - md: add md_submit_discard_bio() for submitting discard bio
    - md/raid10: extend r10bio devs to raid disks
    - md/raid10: pull codes that wait for blocked dev into one function
    - md/raid10: improve raid10 discard request
    - md/raid10: improve discard request for far layout
    - dm raid: fix discard limits for raid1 and raid10
    - dm raid: remove unnecessary discard limits for raid10

  * Bionic: btrfs: kernel BUG at /build/linux-
    eTBZpZ/linux-4.15.0/fs/btrfs/ctree.c:3233! (LP: #1902254)
    - btrfs: drop unnecessary offset_in_page in extent buffer helpers
    - btrfs: extent_io: do extra check for extent buffer read write functions
    - btrfs: extent-tree: kill BUG_ON() in __btrfs_free_extent()
    - btrfs: extent-tree: kill the BUG_ON() in insert_inline_extent_backref()
    - btrfs: ctree: check key order before merging tree blocks

  * Ethernet no link lights after reboot (Intel i225-v 2.5G) (LP: #1902578)
    - igc: Add PHY power management control

  * Undetected Data corruption in MPI workloads that use VSX for reductions on
    POWER9 DD2.1 systems (LP: #1902694)
    - powerpc: Fix undetected data corruption with P9N DD2.1 VSX CI load emulation
    - selftests/powerpc: Make alignment handler test P9N DD2.1 vector CI load
      workaround

  * [20.04 FEAT] Support/enhancement of NVMe IPL (LP: #1902179)
    - s390: nvme ipl
    - s390: nvme reipl
    - s390/ipl: support NVMe IPL kernel parameters

  * uvcvideo: add mapping for HEVC payloads (LP: #1895803)
    - media: uvcvideo: Add mapping for HEVC payloads

  * Focal update: v5.4.73 upstream stable release (LP: #1902115)
    - ibmveth: Switch order of ibmveth_helper calls.
    - ibmveth: Identify ingress large send packets.
    - ipv4: Restore flowi4_oif update before call to xfrm_lookup_route
    - mlx4: handle non-napi callers to napi_poll
    - net: fec: Fix phy_device lookup for phy_reset_after_clk_enable()
    - net: fec: Fix PHY init after phy_reset_after_clk_enable()
    - net: fix pos incrementment in ipv6_route_seq_next
    - net/smc: fix valid DMBE buffer sizes
    - net...

Changed in linux (Ubuntu Focal):
status: Fix Committed → Fix Released
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers