[Bug 2167170] Re: Lenovo IdeaPad 3 15ALC6 (82KU): fan RPM unavailable because yogafan driver is not enabled

** Tags added: kernel-daily-bug -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2167170 Title: Lenovo IdeaPad 3 15ALC6 (82KU): fan RPM unavailable because yogafan driver is not enabled Status in linux package in Ubuntu: New Bug description: Hardware: Lenovo IdeaPad 3 15ALC6 DMI product_name: 82KU DMI product_version: IdeaPad 3 15ALC6 Kernel: 7.0.0-31-generic Problem: The system fan works normally under firmware/EC control, but its RPM is not exposed through Linux hwmon/lm-sensors. Observed: $ modinfo yogafan modinfo: ERROR: Module yogafan not found. $ grep CONFIG_SENSORS_YOGAFAN /boot/config-$(uname -r) CONFIG_SENSORS_YOGAFAN is not present. Current hwmon devices: ADP0 BAT0 nvme k10temp amdgpu No fan*_input or PWM interface is exposed. Upstream Linux includes the yogafan hwmon driver and Lenovo IdeaPad 3 15ALC6 (82KU) is listed as supported hardware. Expected: With yogafan support enabled, fan RPM should be exposed through the standard hwmon interface (fan*_input) and become visible to tools such as lm-sensors. Request: Please consider enabling or backporting CONFIG_SENSORS_YOGAFAN for Ubuntu kernels supporting this hardware. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-31-generic 7.0.0-31.31 ProcVersionSignature: Ubuntu 7.0.0-31.31-generic 7.0.14 Uname: Linux 7.0.0-31-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CasperMD5CheckResult: pass Date: Sat Sep 12 16:08:26 2026 InstallationDate: Installed on 2026-08-18 (25 days ago) InstallationMedia: Ubuntu-Server 26.04 "Resolute Raccoon" - Release amd64 (20260420.1) MachineType: LENOVO 82KU ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-31-generic root=UUID=59aa6ae4-acbd-4b71-9752-4627997b9853 ro video=HDMI-A-1:1920x1080@60e crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/19/2025 dmi.bios.release: 1.68 dmi.bios.vendor: LENOVO dmi.bios.version: GLCN68WW dmi.board.asset.tag: No Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0T76466WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: IdeaPad 3 15ALC6 dmi.ec.firmware.release: 1.60 dmi.modalias: dmi:bvnLENOVO:bvrGLCN68WW:bd03/19/2025:br1.68:efr1.60:svnLENOVO:pn82KU:pvrIdeaPad315ALC6:rvnLENOVO:rnLNVNB161216:rvrSDK0T76466WIN:cvnLENOVO:ct10:cvrIdeaPad315ALC6:skuLENOVO_MT_82KU_BU_idea_FM_IdeaPad315ALC6:pfaIdeaPad315ALC6: dmi.product.family: IdeaPad 3 15ALC6 dmi.product.name: 82KU dmi.product.sku: LENOVO_MT_82KU_BU_idea_FM_IdeaPad 3 15ALC6 dmi.product.version: IdeaPad 3 15ALC6 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2167170/+subscriptions