*** This bug is a duplicate of bug 1831587 ***
https://bugs.launchpad.net/bugs/1831587
Yeah, OLEDs do not have a backlight so the standard 'backlight' kernel
controls won't work.
Indeed 'xrandr --brightness' is the only workaround I know of.
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https://bugs.launchpad.net/bugs/1872327
Title:
OLED brightness control on Intel Iris Plus Graphics G7
Status in xorg package in Ubuntu:
New
Bug description:
Hi
I'm testing kubuntu 20.4 with my HP spectre x360 13 aw0720nz.
The hotkeys to adjust the OLED brightness do not work.
Adjusting the display brightness editing the file brightness in
/sys/class/backlight/intel_backlight doesn't work either. At
/etc/default/grub I already added "acpi_backlight=vendor"
I found an article, that fits to the topic:
http://reddit.com/r/linux/comments/cmf0vi/the_state_of_oled_brightness_on_linux
Regards Daniel
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
CasperMD5CheckResult: skip
CompositorRunning: None
Date: Sun Apr 12 18:42:36 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: No
GraphicsCard:
Intel Corporation Iris Plus Graphics G7 [8086:8a52] (rev 07) (prog-if 00
[VGA controller])
Subsystem: Hewlett-Packard Company Iris Plus Graphics G7 [103c:86fa]
InstallationDate: Installed on 2020-04-03 (8 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200401)
MachineType: HP HP Spectre x360 Convertible 13-aw0xxx
ProcEnviron:
LANGUAGE=de_CH:de
TERM=xterm-256color
PATH=(custom, no user)
LANG=de_CH.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-21-generic
root=UUID=61d60ac7-8b29-4729-a6a0-e3b0300dba97 ro rootflags=subvol=@ quiet
splash acpi_backlight=vendor vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/02/2020
dmi.bios.vendor: AMI
dmi.bios.version: F.13
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 86FA
dmi.board.vendor: HP
dmi.board.version: 87.46
dmi.chassis.type: 31
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAMI:bvrF.13:bd03/02/2020:svnHP:pnHPSpectrex360Convertible13-aw0xxx:pvr:rvnHP:rn86FA:rvr87.46:cvnHP:ct31:cvrChassisVersion:
dmi.product.family: 103C_5335KV HP Spectre
dmi.product.name: HP Spectre x360 Convertible 13-aw0xxx
dmi.product.sku: 8KZ06EA#UUZ
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-1
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20190815-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
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