# 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

## 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

Warning: These options may cause system instabilities. Remove them if experiencing problems.

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.

Warning: Wrong settings may damage your machine! Use with caution!

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.

Category:

- Lenovo