https://bugzilla.kernel.org/show_bug.cgi?id=207815
Bug ID: 207815
Summary: thinkpad_acpi does not detect fans on Lenovo
ThinkStation P700
Product: ACPI
Version: 2.5
Kernel Version: 5.6.13-arch1-1
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Fan
Assignee: [email protected]
Reporter: [email protected]
Regression: No
On a Thinkstation P700 with dual Xeon E5-2620v3 and 144GB DDR4 RAM and one Flex
Adaptor with 1x NVMe SSD, lm-sensors report temperatures but not fan speeds
other than Nvidia Fan under Fedora 32.
There seems that there is no way to control fan speed from Linux [not sure
about Windows]
On a Thinkstation P700 folder /proc/acpi/ibm/thermal does not exist.
/sys/devices/platform/coretemp.*/ exist but those don't show any fans nor fan
control whatsoever.
Lenovo does say this machine is [certified] for Linux [Ubuntu and CentOS] but
neither seems to show fan control as my experience shows.
Looking at Lenovo [website] re drivers nothing relevant shows re Linux Fan
control:
Would be nice to know if fan control is possible under Linux for this platform
and which kernel modules need to be loaded.
thinkpad_acpi module does not load on Fedora 32 but tried Ubuntu 14/16/18 LT
and ArchLinux up to kernel 5.6.13-arch1-1 with similar results
Here's the sample of from sensors output
coretemp-isa-0001
Adapter: ISA adapter
Package id 1: +40.0 C (high = +75.0 C, crit = +85.0 C)
Core 0: +34.0 C (high = +75.0 C, crit = +85.0 C)
Core 1: +33.0 C (high = +75.0 C, crit = +85.0 C)
Core 2: +34.0 C (high = +75.0 C, crit = +85.0 C)
Core 3: +33.0 C (high = +75.0 C, crit = +85.0 C)
Core 4: +32.0 C (high = +75.0 C, crit = +85.0 C)
Core 5: +33.0 C (high = +75.0 C, crit = +85.0 C)
nvme-pci-0200
Adapter: PCI adapter
Composite: +23.9 C (low = -273.1 C, high = +69.8 C)
(crit = +79.8 C)
Sensor 1: +24.9 C (low = -273.1 C, high = +65261.8 C)
Sensor 2: +23.9 C (low = -273.1 C, high = +65261.8 C)
Sensor 5: +32.9 C (low = -273.1 C, high = +65261.8 C)
coretemp-isa-0000
Adapter: ISA adapter
Package id 0: +38.0 C (high = +75.0 C, crit = +85.0 C)
Core 0: +33.0 C (high = +75.0 C, crit = +85.0 C)
Core 1: +31.0 C (high = +75.0 C, crit = +85.0 C)
Core 2: +30.0 C (high = +75.0 C, crit = +85.0 C)
Core 3: +31.0 C (high = +75.0 C, crit = +85.0 C)
Core 4: +32.0 C (high = +75.0 C, crit = +85.0 C)
Core 5: +31.0 C (high = +75.0 C, crit = +85.0 C)
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