Bug 214205
| Summary: | thermal sensor broken after resume, fan speed at 100% speed on Lenovo ThinkPad Carbon X1 4th Gen | ||
|---|---|---|---|
| Product: | ACPI | Reporter: | Stanislav Brabec (sbrabec) |
| Component: | EC | Assignee: | acpi_ec |
| Status: | CLOSED UNREPRODUCIBLE | ||
| Severity: | normal | CC: | gi1242, kernel.org, lukemidworth, marc, Myrdden42, rui.zhang, sander |
| Priority: | P1 | ||
| Hardware: | Intel | ||
| OS: | Linux | ||
| Kernel Version: | 5.14.0-rc7.g61596f4 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
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Description
Stanislav Brabec
2021-08-27 20:30:44 UTC
I have the Thinkpad X1 Carbon 4th gen laptop as well, and I experience this same problem about 90% of the time I resume from sleep. The issue does not occur in any other situation. I'm getting the same output of cat /proc/acpi/ibm/thermal when the bug appears: temperatures: -128 -128 0 0 0 0 0 0 Hardware: 20FC000RAU BIOS N1FUJ42W (1.49) Output of hwprobe: https://linux-hardware.org/?probe=b7c59b9453 I don't know whether that's the same problem, but I can witness the same symptoms and the same `/proc/acpi/ibm/thermal` output on a x260 with Firmware version: R02ET74W (1.47 ) and Firmware Revision 1.15. https://bugzilla.redhat.com/show_bug.cgi?id=1480844 says that it might be a firmware bug. I can confirm I have exactly the same problem. On some resumes it starts fans blaring and I see the -128 in /proc/acpi/ibm/thermal that Stanislav Brabec I have an X1 Yoga (4 years old now...): Arch x86_64 Kernel 5.14.7-arch1-1 Vendor LENOVO Model ThinkPad X1 Yoga 1st 20FQ000RUS BIOS N1FET75W (1.49 ) (Updated 05/25/2021) Output of hwprobe: https://linux-hardware.org/?probe=dd105ba06b In the recent Thinkpad Carbon X1 4th firmware update notes (Version 1.52, dated 2022/01/27) it states: ... [Problem fixes] - Fixed an issue where fan might rotated with max speed due to not reading CPU temperature correctly. ... (Reference: https://download.lenovo.com/pccbbs/mobiles/n1fur45w.txt) I can confirm that after updating from 1.48 to 1.52 the fan does not rotate a single time anymore with max speed after resume. Kernel: 5.13.0-28-generic, (Ubuntu 20.04.1) To update I used the fwupdmgr command: Make sure your model matches the exact model (For Thinkpad Carbon X1 4th this is: 20FB and 20FC) Download and extract n1ful45w.zip from this page: https://pcsupport.lenovo.com/ie/en/products/Laptops-and-netbooks/ThinkPad-X-Series-laptops/ThinkPad-X1-Carbon-Type-20FB-20FC/downloads/DS111756 Connect a power cord first. To update I used the method with fwupdmgr and using cab files from the shell: fwupdmgr install N1FET78W.cab reboot Wait patiently until the bios is updated and your system is ready again. Then: fwupdmgr install N1FHT36W.cab reboot Wait patiently until the ECP (Embedded Controller Program) is updated. You are done. Concerning previous posting, cheering too soon: After 3 days of using, the issue happened now for the first time again. ##### cat /proc/acpi/ibm/thermal temperatures: -128 -128 0 0 0 0 0 0 ##### sensors iwlwifi_1-virtual-0 Adapter: Virtual device temp1: +24.0°C pch_skylake-virtual-0 ... BAT0-acpi-0 ... coretemp-isa-0000 ... thinkpad-isa-0000 Adapter: ISA adapter fan1: 6912 RPM CPU: N/A GPU: N/A temp3: +0.0°C ... temp8: +0.0°C nvme-pci-0500 ... acpitz-acpi-0 ... #### cat /var/log/syslog ... Feb 21 22:38:16 mni-X1 kernel: [27787.254306] thermal thermal_zone2: failed to read out thermal zone (-61) ... Concerning previous posting, cheering too soon: After 3 days of using, the issue happened now for the first time again. ##### cat /proc/acpi/ibm/thermal temperatures: -128 -128 0 0 0 0 0 0 ##### sensors iwlwifi_1-virtual-0 Adapter: Virtual device temp1: +24.0°C pch_skylake-virtual-0 ... BAT0-acpi-0 ... coretemp-isa-0000 ... thinkpad-isa-0000 Adapter: ISA adapter fan1: 6912 RPM CPU: N/A GPU: N/A temp3: +0.0°C ... temp8: +0.0°C nvme-pci-0500 ... acpitz-acpi-0 ... #### cat /var/log/syslog ... Feb 21 22:38:16 xyz-X1 kernel: [27787.254306] thermal thermal_zone2: failed to read out thermal zone (-61) ... From my side, not a single occurrence of the problem since the installation date of the BIOS version 1.52 (2022-02-27). At least 100 suspend-resume cycles were performed without re-appearing of this issue. Before the update, about 85% of resumes had broken thermal values. So I tempted to close the bug as RESOLVED. Anybody is still able to reproduce with the latest BIOS and the latest Intel Management Engine? Thanks for the update. Bug closed. Hello, I'm on a Carbon X1 4th Gen, with BIOS update 1.53, kernel 5.19.6.arch1-1, and this issue still exists for me. This happens for me not only on resume but whenever the fans start to spin up at all there's about a 1/3 chance that the speed sensor breaks and shows 65536 until the fans are manually stopped for a while. This occurs regardless of whether the BIOS is allowed to control the fans or if they're controlled manually with a program like thinkfan, or manually, for instance manually setting the fans to their slowest speed will result in them maxing out anyways. Error is the same as Comment 6, however my output of /proc/acpi/ibm/fan seems to be normal even when the fans are malfunctioning. Sorry, doesn't appear to be a way to edit comments, I meant to say the output of /proc/acpi/ibm/thermal seems to display the correct CPU temp even when the fans are malfunctioning. |