[Dell Inspiron 7537/7737] Wireless key does not work on this system

[Po-Hsu Lin]

CID: 201306-13867 Dell Insprion 7537

The wireless key does not work on this system.

This issue was once reported in bug 1339456, and fixed by an ACPI quirk. But now it's not working.

Keycode 240 can be detected from showkey -k
Nothing can be detected from showkey -s

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-59-generic 4.4.0-59.80
ProcVersionSignature: Ubuntu 4.4.0-59.80-generic 4.4.35
Uname: Linux 4.4.0-59-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ubuntu 1532 F.... pulseaudio
 /dev/snd/controlC1: ubuntu 1532 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Jan 16 22:58:40 2017
HibernationDevice: RESUME=UUID=9e1a096f-d8ef-429f-b388-03b62ca17735
InstallationDate: Installed on 2017-01-16 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: Dell Inc. Inspiron 7537
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-59-generic.efi.signed root=UUID=7ebd45a5-39be-47e6-a84a-0121cf8445f9 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-59-generic N/A
 linux-backports-modules-4.4.0-59-generic N/A
 linux-firmware 1.157.6
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/04/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A14
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA14:bd10/04/2016:svnDellInc.:pnInspiron7537:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Inspiron 7537
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Po-Hsu Lin (cypressyew)]

The issue in bug 1339456 seems to be fixed by a BIOS upgrade.

[Po-Hsu Lin (cypressyew)]

with 4.4.0-143 showkey -s returns:
0xe0 0x73 0xe0 0xf3

$ acpi_listen
 button/wlan WLAN 00000080 00000000 K