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# Lenovo ThinkPad X201

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Reason: Needs a function keys and accessibility section (Discuss in Talk:Lenovo ThinkPad X201)

The Lenovo X201 is a dual-core subnotebook produced by Lenovo.

Hardware | PCI/USB ID | Working?
--- | --- | ---
Touchpad | PS/2 | Yes
Keyboard |  | Yes
GPU | `8086:0046` | Yes
Webcam | `17ef:4816` | Yes
Ethernet | `8086:10ea` | Yes
Bluetooth | `0a5c:217f` | Yes
Card reader | `0bda:0159` | Yes
Audio | `8086:3b56` | Yes
Wireless | `8086:4239` | Yes

## Backlight

Append the `acpi_backlight=video` kernel parameter.

## Troubleshooting

### Overheating

There are some discussions concerning overheating-related shutdowns when running under full load (video encoding, etc). [1] [2]

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

cpupower can be used for frequency scaling; see CPU frequency scaling for more information. Undervolting is not possible with the Intel core iX cpu.

### No speaker output

Try pressing the mute button (next to the Escape key). See this article for details.

### No ACPI events

See coreboot documentation: [4] [5]

### Display issues

See Intel graphics#AccelMethod and Intel graphics#DRI3 issues.

X201s: If planning to use VT-d, it is also recommended to add the following kernel parameter:

    intel_iommu=igfx_off

### Hardware virtualization

If KVM claims virtualization support is disabled in BIOS, even with VT-x enabled, disable Intel TXT. [6]

## See also

- ThinkWiki.org
- ThinkWiki.de

Category:

- Lenovo

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