Ubuntu
linux package

[Lenovo ThinkPad X1 Carbon 20A8] Wireless switch key doesn't work

Bug #1389268 reported by SergeiS
10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Triaged
Low
Unassigned

Bug Description

On my X1 Carbon laptop the wireless switch key doesn't work. It appears that the code in charge of handling the X1 Carbon adaptive keyboard is here and rfkill handling is there: https://kernel.googlesource.com/pub/scm/linux/kernel/git/jic23/iio/+/refs/heads/togreg/drivers/platform/x86/thinkpad_acpi.c

Pressing the key generates no events (see below) and thus has no effect. So, it's either my stock kernel doesn't have it, or something else is broken. Nothing ever fires when I press all extra buttons including the wireless one:
ls /dev/input/by-path/platform-thinkpad_acpi-event -lh
lrwxrwxrwx 1 root root 9 Nov 2 19:45 /dev/input/by-path/platform-thinkpad_acpi-event -> ../event7

input-events 7
/dev/input/event7
   bustype : BUS_HOST
   vendor : 0x17aa
   product : 0x5054
   version : 16641
   name : "ThinkPad Extra Buttons"
   phys : "thinkpad_acpi/input0"
   bits ev : EV_SYN EV_KEY EV_MSC EV_SW

waiting for events
timeout, quitting

# acpi events fire for all extra buttons except the wireless one!

root@x1:~# acpi_listen -t 100
ibm/hotkey LEN0068:00 00000080 00001105
ibm/hotkey LEN0068:00 00000080 00001106
ibm/hotkey LEN0068:00 00000080 00001108
ibm/hotkey LEN0068:00 00000080 0000110a
ibm/hotkey LEN0068:00 00000080 00001101
ibm/hotkey LEN0068:00 00000080 00001101
ibm/hotkey LEN0068:00 00000080 00001101
video/switchmode VMOD 00000080 00000000
ibm/hotkey LEN0068:00 00000080 0000110e

So, since nothing fires on both channels, it seems I can't manually bind the button to rfkill either.

WORKAROUND: Add custom rule to /etc/acpi/events and bound handling to a different adaptive button that does generate a acpi event.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-24-generic 3.16.0-24.32
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: sergei 2598 F.... pulseaudio
 /dev/snd/controlC1: sergei 2598 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Nov 4 10:01:26 2014
HibernationDevice: RESUME=UUID=b3bb00ce-12f6-48e7-a508-667a4201d913
InstallationDate: Installed on 2014-11-03 (1 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: LENOVO 20A8A0K5US
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-24-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash rfkill.default_state=0 acpi_osi=Linux acpi_enforce_resources=lax i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 i915.semaphores=1 vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.16.0-24-generic N/A
 linux-backports-modules-3.16.0-24-generic N/A
 linux-firmware 1.138
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/02/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: GRET40WW (1.17 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20A8A0K5US
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGRET40WW(1.17):bd09/02/2014:svnLENOVO:pn20A8A0K5US:pvrThinkPadX1Carbon2nd:rvnLENOVO:rn20A8A0K5US:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20A8A0K5US
dmi.product.version: ThinkPad X1 Carbon 2nd
dmi.sys.vendor: LENOVO

See original description
Revision history for this message
SergeiS (sergei-redleafsoft) wrote :
Revision history for this message
Brad Figg (brad-figg) wrote : Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
penalvch (penalvch) wrote : Re: Thinkpad wireless switch key doesn't work

SergeiS, thank you for reporting this and helping make Ubuntu better. Could you please test the latest upstream kernel available from the very top line at the top of the page (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested exactly shown as:
kernel-fixed-upstream-3.18-rc3

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

tags: added: latest-bios-1.17
Changed in linux (Ubuntu):
importance: Undecided → Low
status: Confirmed → Incomplete
summary: - Thinkpad wireless switch key doesn't work
+ [Lenovo ThinkPad X1 Carbon 20A8] Wireless switch key doesn't work
description: updated
Revision history for this message
SergeiS (sergei-redleafsoft) wrote :

I am trying to get the extra information on the Lenovo X1 Carbon wireless switch bug, and I had followed your link to http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D and picked v3.18-rc2-utopic (seems like the latest). I've installed the kernel, it shows up as an option in grub but hangs while booting. I have full-disk encryption though dm_crypt as configured by Ubuntu installer, and I normally get the password prompt within a second from booting. If I select mainline kernel, it never gets to the password request part. Is there anything you can suggest? I've tried googling but nothing useful came up.

Revision history for this message
penalvch (penalvch) wrote :

SergeiS, you would want to use 3.18-rc3 as rc2 has been problematic to test with for many.

Revision history for this message
SergeiS (sergei-redleafsoft) wrote :

There's no 3.18-rc3 build for 14.10, only for 15.04. Should I wait to RC3 to be built for my platform, or try the packages built for the next release?

Revision history for this message
SergeiS (sergei-redleafsoft) wrote :

I've installed Vivid build of 3.18-rc3 and it booted, so I could verify that the issue still exists there. Hope this helps.

tags: added: kernel-bug-exists-upstream kernel-bug-exists-upstream-3.18-rc3
Changed in linux (Ubuntu):
status: Incomplete → Confirmed
Revision history for this message
penalvch (penalvch) wrote :

SergeiS, the issue you are reporting is an upstream one. Could you please report this problem to the appropriate mailing list (linux-input) by following the instructions _verbatim_ at https://wiki.ubuntu.com/Bugs/Upstream/kernel ?

Please provide a direct URL to your e-mail to the mailing list once you have made it so that it may be tracked.

Thank you for your understanding.

Changed in linux (Ubuntu):
status: Confirmed → Triaged
Revision history for this message
SergeiS (sergei-redleafsoft) wrote :

Reported to kernel linux-input mailing list. If there's anything else I can/should do, please let me know.

http://www.spinics.net/lists/linux-input/msg34345.html

To post a comment you must log in.
This report contains Public information  
Everyone can see this information.
Subscribing...

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.