Lenovo ThinkPad T14s (AMD) Gen 3

From ArchWiki
Hardware PCI/USB ID Working?
GPU 1002:1681 Has issues
Wireless 17cb:1103 Yes
Audio 1022:15e3 Yes
TrackPoint Yes
Touchpad Yes
Webcam 04f2:b74f Yes
Fingerprint reader 27c6:6594 Yes
Mobile broadband 2c7c:030a Yes
Bluetooth 10ab:9309 Yes
Smartcard reader 058f:9540 Yes

This article covers the installation and configuration of Arch Linux on a Lenovo Thinkpad T14s (AMD) Gen 3 laptop. Almost everything seems to work pretty much out the box.

For a general overview of laptop-related articles and recommendations, see Laptop.

Firmware

Updating the firmware using the fwupd utility works as long as all the relevant options are enabled in the BIOS (Enable Windows Update UEFI Update).

Updating the BIOS firmware also fixes some error that produces the following output from linux: 

[Hardware Error]: Corrected error, no action required.
[Hardware Error]: CPU:0 (19:44:1) MC15_STATUS[Over|CE|MiscV|AddrV|-|-|SyndV|CECC|-|-|-]: 0xdc204000000c011b
[Hardware Error]: Error Addr: 0x00000001faa88180
[Hardware Error]: IPID: 0x0000009600050f00, Syndrome: 0x000001ff0a240700
...

CPU

There are a number of frequency-scaling issues surrounding ACPI-cpufreq causing the internal GPU to reset at seemingly random times. This can be fixed by using "amd_pstate" (see below). GPU resets are infrequent, but should be considered prior to purchase of laptop if intending to stick with the ACPI-cpufreq performance scaling driver. The resets cause the screen to turn black, forcing the user to either reboot or relogin via a login manager. Switching to a TTY during a GPU reset is sometimes possible.

To follow these issues, see:

https://bugzilla.kernel.org/show_bug.cgi?id=213145

https://gitlab.freedesktop.org/drm/amd/-/issues/1974

https://gitlab.freedesktop.org/drm/amd/-/issues/2068

https://gitlab.freedesktop.org/drm/amd/-/issues/2443

The overvolting workaround provided does not affect the ThinkPad T14s Gen 3 (AMD) processors because ultrabook processors are unable to be overvolted.

On kernels < 6.5, if using ACPI-cpufreq is not a requirement, it is possible to use the experimental amd-pstate frequency-scaling driver, by adding the amd_pstate=passive kernel parameter (prior to Kernel 6.3) or amd_pstate=active kernel parameter (for Kernel 6.3 or newer). Note that the kernel parameter is only available for kernel versions 5.17 and up. This driver appears to be more stable than the ACPI-cpufreq driver, not only reducing the number of GPU resets, but also lowering idle CPU temperatures.

Since kernel 6.5, the AMD P-State EPP driver with "Active" profile applied by default, so normally no changes are needed.

Touchpad

The touchpad works fine on Wayland.

However, some people have an occasional freeze of 3-4 seconds on Xorg.

Disable wakeup from sleep on touchpad activity

Use the following to disable wake-up events caused by the touchpad. Note that this only applies to the touchpad itself and the integrated buttons for left/right click at its bottom, not the 3 buttons at its top or any other input. 

/etc/udev/rules.d/99-disable-touchpad-wakeup.rules
KERNEL=="i2c-SYNA8018:00", SUBSYSTEM=="i2c", ATTR{power/wakeup}="disabled"
Tip: You can find the device name with grep -i touchpad -A 1 /proc/bus/input/devices.


Speakers

Speakers work out of the box. How ever, they won't have the same sound quality as on Windows due to the missing Dolby Atmos Convolver.

To enable Dolby Atmos Convolver install EasyEffects, go to Effects > Add Convolver > Import Impulse

You can download the "Movie" and "Music" preset here:

https://files.bestmail.ws/Arch/T14s_G3_AMD/T14S_G3_Music_Movies.irs

They were created on the T14s G3 AMD with Windows 10.

Display

The display works fine out of the box. You can download a calibrated color profile for the 400nits IPS panel here:

https://files.bestmail.ws/Arch/T14s_G3_AMD/T14s_Display_Calibration_200323_4.icc

Some users reported crashes / issue of the display, especially after hibernate/suspend.

A fix is to disable PS by adding "amdgpu.dcdebugmask=0x10" to the kernel parameters.

Network / WiFi

There was a known bug in the ath11k module that could block the resume process, freeze the graphics interface and cause loss of wireless card interface. A manual fix is to disable the ath11k_pci module before hibernate and re-enable it after resume. However, this issue shouldn't be present anymore.

If you still face the issue: See Dell XPS 13 (9310)#Wifi for a systemd service to automate this procedure.

This can be automated via sleep hooks - if the module is unloaded before hibernating or suspending it unloads immediately with no delay, and the resume kernel bug does not happen: 

/etc/systemd/system/ath11k-suspend.service
[Unit]
Description=Suspend: rmmod ath11k_pci
Before=sleep.target

[Service]
Type=simple
ExecStart=/usr/bin/rmmod ath11k_pci

[Install]
WantedBy=sleep.target
/etc/systemd/system/ath11k-resume.service
[Unit]
Description=Resume: modprobe ath11k_pci
After=suspend.target

[Service]
Type=simple
ExecStart=/usr/bin/modprobe ath11k_pci

[Install]
WantedBy=suspend.target

You need to enable ath11k-suspend.service and ath11k-resume.service.

Additionally it might be required to also restart NetworkManager.service.

Mobile broadband

Works correctly. Follow instruction from Mobile broadband modem especially section FCC unlocking.

Smartcard reader

Seems to work and read cards. Follow instructions from smartcards.

Fingerprint reader

Work as expected. Follow fprintd

Power management

S3 sleep / s2idle

S3 sleep is not supported. However, s2idle works out of the box and causes no problems with sleep / hibernation.

Hibernate

Works fine. If you face wifi issues after hibernation see: Network / WiFi

Battery thresholds

Battery charge thresholds can be correctly set with TLP or within KDE / GNOME power management.

AMD P-State EPP

If you are using power-profiles-daemon, please note that the current stable release of it do not fully support AMD P-State EPP. You can switch to TLP version 1.6 or newer that supports AMP P-State features, or fix this using an udev rule + script to apply different AMD P-State EPP states depending on whether the laptop is running on battery or charger. 

/etc/udev/rules.d/99-battery.rules
SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="/usr/local/bin/on_battery.sh"
SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="/usr/local/bin/on_ac.sh"
/usr/local/bin/on_battery.sh
#!/usr/bin/bash

# Change Dirty Writeback Centisecs according to TLP / Powertop
echo '5000' > '/proc/sys/vm/dirty_writeback_centisecs';

# Change AMD Paste EPP energy preference
# Available profiles: performance, balance_performance, balance_power, power
echo 'balance_power' | tee /sys/devices/system/cpu/cpu*/cpufreq/energy_performance_preference;

# If required, change cpu scaling governor
# Possible options are: conservative ondemand userspace powersave performance schedutil
#cpupower frequency-set -g powersave;

# Platform Profiles Daemon will do this automatically, based on your settings in KDE / GNOME
# You can how ever, set this manually as well
# Possible profile options are: performance, powersave, low-power
#echo 'powersave' > '/sys/firmware/acpi/platform_profile';

# Radeon AMDGPU DPM switching doesn't seem to be supported.
# Possible options should be: battery, balanced, performance, auto
#echo 'battery' > '/sys/class/drm/card0/device/power_dpm_state'; 

# Should always be auto (TLP default = auto)
# Possible options are: auto, high, low
#echo 'auto' > '/sys/class/drm/card0/device/power_dpm_force_performance_level';

# Runtime PM for PCI Device to auto
find /sys/bus/pci/devices/*/power -name control -exec sh -c 'echo "auto" > "$1"' _ {} \;
for i in $(find /sys/devices/pci0000\:00/0* -maxdepth 3 -name control); do
    echo auto > $i;
done
/usr/local/bin/on_ac.sh
#!/usr/bin/bash

# Change Dirty Writeback Centisecs according to TLP / Powertop
echo '500' > '/proc/sys/vm/dirty_writeback_centisecs';

# Change AMD Paste EPP energy preference
# Available profiles: performance, balance_performance, balance_power, power
echo 'balance_performance' | tee /sys/devices/system/cpu/cpu*/cpufreq/energy_performance_preference;

# If required, change cpu scaling governor
# Possible options are: conservative ondemand userspace powersave performance schedutil
#cpupower frequency-set -g performance;

# Platform Profiles Daemon will do this automatically, based on your settings in KDE / GNOME
# You can how ever, set this manually as well
# Possible profile options are: performance, powersave, low-power
#echo 'performance' > '/sys/firmware/acpi/platform_profile';

# Radeon AMDGPU DPM switching doesn't seem to be supported.
# Possible options should be: battery, balanced, performance, auto
#echo 'performance' > '/sys/class/drm/card0/device/power_dpm_state';

# Should always be auto (TLP default = auto)
# Possible options are: auto, high, low
#echo 'auto' > '/sys/class/drm/card0/device/power_dpm_force_performance_level';

# Runtime PM for PCI Device to on
find /sys/bus/pci/devices/*/power -name control -exec sh -c 'echo "on" > "$1"' _ {} \;
for i in $(find /sys/devices/pci0000\:00/0* -maxdepth 3 -name control); do
    echo on > $i;
done

Additionally make /usr/local/bin/on_battery.sh and /usr/local/bin/on_ac.sh executable.

Power Profiles Daemon

The package power-profiles-daemon is the standard power management service for KDE#Power management and GNOME#Power modes. It conflicts with TLP and the reasons for that are described here: https://gitlab.freedesktop.org/hadess/power-profiles-daemon#why-not

  1. Install power-profiles-daemon
  2. Start/enable the power-profiles-daemon service.

Microphone LED

Some users reported that the Mic LED is always one.

This doesn't always happen but if you face the issue see: Lenovo ThinkPad T14 (AMD) Gen 3#Mute Mic LED always on.

Function keys

Key Visible?1 Marked?2 Effect Note
Fn Yes No XF86WakeUp
Fn+4 Yes Yes XF86Sleep
Fn+Esc No Yes Toggles Fn lock Has status led
Fn+F1 Yes Yes XF86AudioMute Has status led
Fn+F2 Yes Yes XF86AudioLowerVolume
Fn+F3 Yes Yes XF86AudioRaiseVolume
Fn+F4 Yes Yes XF86AudioMicMute Has status led
Fn+F5 Yes Yes XF86MonBrightnessDown
Fn+F6 Yes Yes XF86MonBrightnessUp
Fn+F7 Yes Yes XF86Display
Fn+F8 Yes Yes XF86WLAN Marked with airplane mode
Fn+F9 Yes Yes XF86Messenger Marked with message box
Fn+F10 Yes Yes XF86Go Marked with phone answer call
Fn+F11 Yes Yes Cancel Marked with phone end call
Fn+F12 Yes Yes XF86Favorites
Fn+Left Yes No Home
Fn+Right Yes No End
Fn+P Yes No Pause
Fn+S Yes No Sys_Req
Fn+K Yes No Scroll_Lock
Fn+B Yes No Break
Stamp Yes Yes Print
Fn+Space No Yes Change keyboard backlight level
  1. The key is visible to xev and similar tools.
  2. The physical key has a symbol on it, which describes its function.

See also

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