Public bug reported:
I am unable to change the backlight on my ASUS PT2001 All In One
Computer. I have followed all of the directions in this
(https://wiki.ubuntu.com/Kernel/Debugging/Backlight) debugging article,
but at no point was any directory displayed under /sys/class/backlight.
Likewise I was unable to change the backlight brightness using the
brightness applet. The issue persisted no matter the kernel options I
specified on boot. The computer does have hardware keys built into it
that control an On Screen Display that is able to change the backlight
intensity. I will attempt to attach all of the uncompressed files
generated when following the debug steps.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-40-generic 6.8.0-40.40
ProcVersionSignature: Ubuntu 6.8.0-40.40-generic 6.8.12
Uname: Linux 6.8.0-40-generic x86_64
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/seq: lucas 1077 F.... pipewire
/dev/snd/controlC0: lucas 1079 F.... wireplumber
/dev/snd/controlC1: lucas 1079 F.... wireplumber
CRDA: N/A
CasperMD5CheckResult: unknown
CurrentDesktop: LXQt
Date: Fri Aug 9 17:01:57 2024
InstallationDate: Installed on 2024-08-02 (7 days ago)
InstallationMedia: Lubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240425.1)
MachineType: ASUSTeK Computer INC. PT2001
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-40-generic
root=UUID=ae873e6a-2261-439b-a6fd-d27fafb11175 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-6.8.0-40-generic N/A
linux-backports-modules-6.8.0-40-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/07/2014
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0802
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: PT2001
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 10
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr0802:bd11/07/2014:br4.6:svnASUSTeKComputerINC.:pnPT2001:pvr0802:rvnASUSTeKCOMPUTERINC.:rnPT2001:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:skuSKU:
dmi.product.family: All-In-One
dmi.product.name: PT2001
dmi.product.sku: SKU
dmi.product.version: 0802
dmi.sys.vendor: ASUSTeK Computer INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2076466
Title:
I am unable to change the backlight on my ASUS PT2001 All In One
computer
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