View source for Lenovo ThinkPad T460s

[[Category:Lenovo]]
This article covers the installation and configuration of Arch Linux on a Lenovo T460s laptop.

== Model Description ==

Lenovo ThinkPad T460s aka model 20F9-CTO1WW

=== Support ===


{| class="wikitable"
| '''Device''' || '''Working'''
|-
| [[Intel graphics]] || {{Yes}}
|-
| [[Wireless network configuration]] || {{Yes}}
|-
| [[ALSA]] || {{Y|no beep}}
|-
| [[TrackPoint]] || {{Y| with linux-4.5.1}}
|-
| [[Touchpad]] || {{Yes}}
|-
| [[Webcam]] || {{Yes}}
|-
| Fingerprint Sensor || {{No}}
|-
| Mobile Broadband || {{Yes}}
|-
| Bluetooth || {{Yes}}
|-
| Suspend/Resume || {{Y|kernel patch}}
|-
| Hibernate/Resume || {{Y|without charger}}
|}

== Troubleshooting ==

{{Style|Please link to existing resources such as [[TrackPoint]] and [[ALSA]] rather than duplicate things here. See [[:Category:Laptops]].}}

The {{AUR|linux-t460s}} package includes kernel patches that fix the mouse and suspend issues described below, which can be useful until {{Pkg|linux}} includes these patches. Alternatively, {{AUR|linux-git}} can be used.

=== Touchpad/TrackPoint ===

With older kernels than 4.5.1,  there is a [https://bugzilla.kernel.org/show_bug.cgi?id=114321 kernel bug] which causes the physical mouse button (belonging to the TrackPoint) to report release events immediately even when pressing and holding the button. This prevents drag and drop and similar actions from working. This bug was fixed in linux-4.5.1.

=== Suspend / Resume ===

Suspending the T460s by closing the lid when running on battery causes the machine to freeze up entirely. This can be worked around by setting the "intel_pstate=no_hwp" kernel parameter or by compiling the kernel with the patch attached to the [https://bugzilla.kernel.org/show_bug.cgi?id=113551 kernel bug] tracking this issue. Kernel 4.6.0 (available via e.g. {{AUR|linux-git}}) resolves this issue.

=== Hibernate / Resume ===

The kernel patch for fixing suspend resume (see above) causes hibernation resume to fail when on charger power. The workaround is to unplug the charger when resuming from hibernation.

=== Fingerprint Sensor ===

The fingerprint sensor built into the T460s is currently not supported by [[Fprint]].

=== ALSA Beep ===

There is no "beep" input to the snd_hda_intel device, so beeps generated by terminal emulators etc. are not played.
As a workaround, PulseAudio can be configured to pick up X11 bell events, see [[PulseAudio#X11 Bell Events]].

=== Function keys ===

Fn+Esc to enable FnLk which will make your function keys work.

=== Video Issues ===

With newer kernels (>= 4.5), there seems to be video flickering, i.e. the screen occasionally goes black for what seems to be a single frame. See bug reports: [https://bugs.freedesktop.org/show_bug.cgi?id=95010] [https://bugs.freedesktop.org/show_bug.cgi?id=91393].

This can be worked around by using the {{ic|i915.enable_rc6&#61;0}} kernel parameter [https://bugs.freedesktop.org/show_bug.cgi?id=95010] (cf. [[Intel graphics#Skylake Support]])

== Youtube ==

[https://www.youtube.com/watch?v=fnYZAr-BaK0&list=PLiKgVPlhUNuxgKwoVH4MMUy5MLqjAE2ux&index=3 Dual boot install with bootctl]