Lenovo ThinkPad X201

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

The Lenovo X201^{[dead link 2021-11-13 ⓘ]} is a dual-core subnotebook produced by Lenovo.

Hardware	PCI/USB ID	Working?
Touchpad		Yes
Keyboard		Yes
Video		Yes
Webcam		Yes
Ethernet		Yes
Bluetooth		Yes
Card reader		Yes
Audio		Yes
Wireless		Yes

Configuration

Backlight

Append the acpi_backlight=video kernel parameter.

Hibernation

See Power management/Suspend and hibernate#Hibernation.

Dock

See dockd.

Troubleshooting

Overheating

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

Use the following thinkfan^AUR 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 Cpufrequtils 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

intel_iommu=igfx_off

to the kernel parameters. see bug report.

Hardware virtualization

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