Public bug reported:
My USB HID keyboard has NumLock LED. It usually works fine. However,
when I plug in YubiKey (hardware security token, it is also identified
as a USB HID keyboard) NumLock LED turns OFF, but the NumLock feature is
still ON.
If I press NumLock, NumLock becomes disabled (it is displayed by DE and
checked by typing). If I press NumLock again, NumLock turns back ON with
LED.
I originally thought that issue could be related to the fact that
YubiKey does not have a NumLock led, so it reports LED as nonexisting
and stuff happens. However, today I tried attaching another USB
keyboard: LED on first one still goes off; but LED on second goes ON
immediately after plugging in. Pressing NumLock once disables NumLock
and LED on first keyboard, as with YubiKey; pressing again enabled
NumLock and both LEDs.
Seems like my user session (on vt2) is running Xorg while login screen
(on vt1, the one that allows to choose a user and that you see before
first login) is running Wayland; both are faulty. Because of this, I
believe the issue is in the kernel.
However, I am not sure, so you can ask for way more reports to be added,
I will add those. Reproducing should be pretty easy with any cheap USB
keyboards, nothing special is used by me.
Operating system: Ubuntu 18.04 Bionic Beaver.
Linux kernel: 18.04 HWE, 5.0.0-25. However, I think I saw this blinking before
upgrading to HWE.
DE: GNOME.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-generic-hwe-18.04 5.0.0.29.86
ProcVersionSignature: Ubuntu 5.0.0-25.26~18.04.1-generic 5.0.18
Uname: Linux 5.0.0-25-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep 24 16:52:08 2019
SourcePackage: linux-meta-hwe
UpgradeStatus: Upgraded to bionic on 2018-09-03 (386 days ago)
** Affects: linux-meta-hwe (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1845214
Title:
Keyboard NumLock indicator turns off on connecting another keyboard
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