Issue Identified: External Monitor Impact on NVIDIA Driver and Fan Control I've identified the issue. When I connect an external monitor via HDMI (for video output) and USB (for power), it forces the NVIDIA driver to handle the connection, which leads to a loss of fan control. Once the fans kick in, even after unplugging the monitor and closing most active processes, the fans continue to run at medium to high speed. This happens even after 30 minutes, with only essential system processes (like kernel tasks) running, and no significant load on the CPU or GPU.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2081935 Title: Fan control stuck at high speed after upgrade to Ubuntu 24, thermal zone 6 fails to read sensor Status in linux package in Ubuntu: New Bug description: After upgrading from Ubuntu 22 (kernel 5.x.x) to Ubuntu 24 (kernel 6.8.x), I have encountered an issue with fan control on my Acer Predator PH315-54. The fans get stuck at high speed, even when the system temperatures are relatively low (30-40°C for both CPU and GPU). This problem did not occur on Ubuntu 22, where fan control worked properly. The issue seems related to the thermal_zone6 sensor, which consistently fails to provide a valid temperature reading in both dmesg and thermald logs. This is accompanied by the following error in dmesg: thermal thermal_zone6: failed to read out thermal zone (-61) In the thermald logs, I also observe errors related to sensor id 16: sensor id 16 : No temp sysfs for reading raw temp I have attempted multiple troubleshooting steps, including restarting and stopping thermald, checking BIOS settings, and reinstalling NVIDIA drivers, but the fan remains stuck at high speed. The issue persists regardless of system load, and the laptop remains cool to the touch. System Information: Model: Acer Predator PH315-54 BIOS Version: V1.11 Kernel Version: 6.x.x (Ubuntu 24) Thermal Sensors Detected: acpitz INT3400 Thermal SEN2 SEN3 TCPU x86_pkg_temp iwlwifi_1 Steps to Reproduce: Boot into Ubuntu 24. Allow the system to idle or perform light system activities. Observe that the fan stays at high speed, regardless of system temperature. Expected Behavior: The fans should adjust dynamically according to system temperatures, slowing down when the system is idle or under light load. Actual Behavior: The fan remains at high speed continuously, even when the system is cool (30-40°C for CPU and GPU), and thermal_zone6 fails to read temperature data. Troubleshooting Steps Taken: Restarted Thermald: Restarting thermald does not fix the issue. Stopped Thermald: Disabling thermald temporarily reduces the issue, but the fan still runs at high speed under BIOS control. Reinstalled NVIDIA Drivers: The problem persists regardless of NVIDIA driver reinstallation. Checked Kernel Logs: The dmesg logs consistently show the thermal_zone6 failure. Checked Sensors: Other sensors are reporting valid temperature data (e.g., CPU and GPU), but thermal_zone6 is not functional. BIOS Settings: Checked BIOS/UEFI for fan control options but found none. The BIOS was updated to the latest version (V1.11), but the issue persists. Additional Information: The issue appears to be tied to the kernel update (6.x.x) in Ubuntu 24. The fan control worked properly on Ubuntu 22 (kernel 5.x.x), suggesting a possible regression or missing support for hardware sensors in the newer kernel. The issue could be related to BIOS/ACPI fan management or a conflict with thermald in the newer kernel. I believe this may be a regression in the thermal management drivers, and I am willing to provide any additional logs or information required to help resolve it. I have also noticed a bunch of ACPI logs in 'dmesg' that i attached with this. This might be related or not i'm not sure. Regards! ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.8.0-45-generic 6.8.0-45.45 ProcVersionSignature: Ubuntu 6.8.0-45.45-generic 6.8.12 Uname: Linux 6.8.0-45-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.28.1-0ubuntu3.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/seq: alexgmenard 4277 F.... pipewire /dev/snd/controlC0: alexgmenard 4282 F.... wireplumber /dev/snd/controlC1: alexgmenard 4282 F.... wireplumber CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Tue Sep 24 23:42:14 2024 InstallationDate: Installed on 2022-08-19 (768 days ago) InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1) MachineType: Acer Predator PH315-54 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-45-generic root=UUID=f5f773ef-b6c6-4c65-9bd3-0e23f6946276 ro quiet splash loglevel=3 vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-6.8.0-45-generic N/A linux-backports-modules-6.8.0-45-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2.3 SourcePackage: linux UpgradeStatus: Upgraded to noble on 2024-09-21 (3 days ago) dmi.bios.date: 06/29/2023 dmi.bios.release: 1.15 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.15 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: QX60_TLS dmi.board.vendor: TGL dmi.board.version: V1.15 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.15 dmi.ec.firmware.release: 1.9 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.15:bd06/29/2023:br1.15:efr1.9:svnAcer:pnPredatorPH315-54:pvrV1.15:rvnTGL:rnQX60_TLS:rvrV1.15:cvnAcer:ct10:cvrV1.15:sku0000000000000000: dmi.product.family: Predator Helios 300 dmi.product.name: Predator PH315-54 dmi.product.sku: 0000000000000000 dmi.product.version: V1.15 dmi.sys.vendor: Acer mtime.conffile..etc.init.d.apport: 2024-07-22T10:59:07 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2081935/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
