Lenovo ThinkPad X201
The X201 is a 4-core subnotebook produced by Lenovo. See Thinkwiki for specifications.
Device | Working |
Intel graphics | Yes |
Network | Yes |
Wireless | Yes |
ALSA | Yes |
Touchpad | Yes |
Bluetooth | Yes |
Webcam | Yes |
Card reader | Yes |
Power management | Limited |
Contents
Configuration
Prevent LID switch from waking up
/etc/tmpfiles.d/disable-lid-wakeup.conf
w /proc/acpi/wakeup - - - - LID
Fbsplash
To make fbsplash work, i915 has to be added to the modules array in mkinitcpio.conf:
/etc/mkinitcpio.conf
MODULES="i915"
Power saving
Add the i915_enable_rc6=1
and i915_enable_fbc=1
kernel parameters to make use of power saving mechanismens turned off by default because of reported instabilities.
Troubleshooting
Overheating
There are some discussions concerning overheating-related shutdowns when running under full load (video encoding, etc) ([1] [2]).
Thinkpad Fan Control contains instructions to install tpfand as a custom replacement for hardware (bios-) fan control.
Start tpfan-admin
and adjust the settings (by clicking on the sensor's graph). You should split the graph (via context menu) and set the fan to full-speed when the sensor reaches, say, 65 °C. You may also edit the config file directly.
Alternatively, use the following thinkfanAUR configuration [3]:
/etc/thinkfan.conf
#X201 user specific #lvl low up RPM (0, 0, 47) # 0 (1, 42, 57) # 2000 (2, 44, 59) # 3300 (3, 50, 65) # 3500 (4, 54, 70) # 3500 (5, 60, 73) # 3800 (6, 62, 83) # 3800 (7, 65, 88) # 4300 (127, 70, 32767) # 5300
One can use cpupower to control frequency scaling; see Cpufrequtils for more information.
Undervolting is not possible with the intel core iX cpu.
No speaker output
Try pressing the mute button (beside the Escape key). See this article for details.
Known issues
ACPI
After suspension, an EC IRQ may hang in the queue causing all functions keys to stop working until cold boot. [4] Other issues include the yellow USB port not being powered.