apport information
** Tags added: apport-collected noble
** Description changed:
Please add kernel boot quirks/workarounds for Lenovo LOQ 15ARP9 (Model
83JC, BIOS PQCN31WW).
The broken vendor BIOS firmware causes critical usability issues out of
the box:
1. Backlight brightness control fails completely on GPU/ACPI interface:
[dmesg] nouveau 0000:01:00.0: drm: [DRM/0000000b:kmsOutp] [BL_GET level:0]
(ret:-22)
[dmesg] ACPI: \_SB_.PCI0.GPP0.PEGP.LCD0: _BCM evaluation failed
2. Touchpad stutters and fails to register inputs properly due to invalid I2C
reports:
[dmesg] i2c_hid_acpi i2c-FTCS0038:00: i2c_hid_get_input: incomplete report
(32/66)
3. Duplicate ACPI objects in vendor tables breaking audio/ACP initialization:
[dmesg] ACPI BIOS Error (bug): Failure creating named object
[\_SB.PCI0.GP17.ACP._WOV], AE_ALREADY_EXISTS
System Specs:
- Manufacturer: LENOVO
- Family/Model: LOQ 15ARP9 (83JC)
- BIOS Version: PQCN31WW (Release Date: 07/09/2026)
Ubuntu 7.0.0-34.34~24.04.1-generic 7.0.14
- This renders basic laptop usability impossible (display stuck at full
- brightness, touchpad dropping inputs). Please apply DMI-matching quirks
- for LOQ 15ARP9 in the next kernel HWE update as soon as possible.
+ This renders basic laptop usability impossible (display stuck at full
brightness, touchpad dropping inputs). Please apply DMI-matching quirks for LOQ
15ARP9 in the next kernel HWE update as soon as possible.
+ ---
+ ProblemType: Bug
+ ApportVersion: 2.28.3-0ubuntu0.1
+ Architecture: amd64
+ AudioDevicesInUse:
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC1: kot-valera 1475 F.... wireplumber
+ /dev/snd/controlC0: kot-valera 1475 F.... wireplumber
+ /dev/snd/seq: kot-valera 1473 F.... pipewire
+ CRDA: N/A
+ CasperMD5CheckResult: unknown
+ CurrentDesktop: zorin:GNOME
+ DistroRelease: Zorin OS 18
+ MachineType: LENOVO 83JC
+ Package: linux (not installed)
+ ProcEnviron:
+ LANG=ru_RU.UTF-8
+ LANGUAGE=ru_UA
+ PATH=(custom, no user)
+ SHELL=/bin/bash
+ TERM=xterm-256color
+ ProcFB: 0 nouveaudrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-38-generic
root=UUID=38b77486-7fda-4c89-a58c-18c0f0bacd37 ro loglevel=7 drm.=0x1ff
nouveau.= quiet splash vt.handoff=7
+ ProcVersionSignature: Ubuntu 7.0.0-38.38~24.04.4-generic 7.0.14
+ PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
+ RelatedPackageVersions:
+ linux-restricted-modules-7.0.0-38-generic N/A
+ linux-backports-modules-7.0.0-38-generic N/A
+ linux-firmware 20240318.git3b128b60.0ubuntu3.1
+ Tags: noble
+ Uname: Linux 7.0.0-38-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: N/A
+ _MarkForUpload: True
+ dmi.bios.date: 07/09/2026
+ dmi.bios.release: 1.31
+ dmi.bios.vendor: LENOVO
+ dmi.bios.version: PQCN31WW
+ 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: LOQ 15ARP9
+ dmi.ec.firmware.release: 1.31
+ dmi.modalias:
dmi:bvnLENOVO:bvrPQCN31WW:bd07/09/2026:br1.31:efr1.31:svnLENOVO:pn83JC:pvrLOQ15ARP9:rvnLENOVO:rnLNVNB161216:rvrNoDPK:cvnLENOVO:ct10:cvrLOQ15ARP9:skuLENOVO_MT_83JC_BU_idea_FM_LOQ15ARP9:pfaLOQ15ARP9:
+ dmi.product.family: LOQ 15ARP9
+ dmi.product.name: 83JC
+ dmi.product.sku: LENOVO_MT_83JC_BU_idea_FM_LOQ 15ARP9
+ dmi.product.version: LOQ 15ARP9
+ dmi.sys.vendor: LENOVO
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/2169034/+attachment/6006254/+files/AlsaInfo.txt
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https://bugs.launchpad.net/bugs/2169034
Title:
CRITICAL: Lenovo LOQ 15ARP9 (83JC) broken BIOS ACPI tables, backlight
and I2C touchpad fail
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