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Hello.
I trying different fresh live USB: 20.04, 22.04, 22.10 and 23.04-beta
Only 23.04-beta can't adjust brightness level of display backlight on my laptop
(lenovo legion 5 17ach6h).
Processor: AMD Ryzen™ 7 5800H with Radeon™ Graphics × 16
Graphics: AMD Radeon™ Graphics / AMD Radeon™ Graphics
ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.2.0-18.18-generic 6.2.6
Uname: Linux 6.2.0-18-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.26.0-0ubuntu2
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CasperVersion: 1.480
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Tue Apr 4 14:17:45 2023
DistUpgraded: Fresh install
DistroCodename: lunar
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
NVIDIA Corporation GA104M [GeForce RTX 3070 Mobile / Max-Q] [10de:24dd] (rev
a1) (prog-if 00 [VGA controller])
Subsystem: Lenovo GA104M [GeForce RTX 3070 Mobile / Max-Q] [17aa:3a4e]
Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon
Vega Mobile Series] [1002:1638] (rev c5) (prog-if 00 [VGA controller])
Subsystem: Lenovo Cezanne [Radeon Vega Series / Radeon Vega Mobile Series]
[17aa:3a4e]
LiveMediaBuild: Ubuntu 23.04 "Lunar Lobster" - Beta amd64 (20230329)
MachineType: LENOVO 82JY
ProcEnviron:
LANG=C.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz
layerfs-path=minimal.standard.live.squashfs --- quiet splash
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/21/2022
dmi.bios.release: 1.59
dmi.bios.vendor: LENOVO
dmi.bios.version: GKCN59WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: NO DPK
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Legion 5 17ACH6H
dmi.ec.firmware.release: 1.59
dmi.modalias:
dmi:bvnLENOVO:bvrGKCN59WW:bd11/21/2022:br1.59:efr1.59:svnLENOVO:pn82JY:pvrLegion517ACH6H:rvnLENOVO:rnLNVNB161216:rvrNODPK:cvnLENOVO:ct10:cvrLegion517ACH6H:skuLENOVO_MT_82JY_BU_idea_FM_Legion517ACH6H:
dmi.product.family: Legion 5 17ACH6H
dmi.product.name: 82JY
dmi.product.sku: LENOVO_MT_82JY_BU_idea_FM_Legion 5 17ACH6H
dmi.product.version: Legion 5 17ACH6H
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.114-1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.0.1-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-1ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug lunar ubuntu
--
Backlight regulation don't work
https://bugs.launchpad.net/bugs/2015255
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