toggling CAPS LOCK off freezes computer

Bug #1663841 reported by Nick Desaulniers
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Incomplete
Undecided
Unassigned

Bug Description

From https://www.reddit.com/r/razer/comments/5orvy5/late_2016_rbs_qhd_linux_damage_report/

I'm having an issue on a Kaby Lake based device, where toggling CAPS LOCK on works, but toggling it off crashes the machine. The screen becomes glitched looking, and sometimes static plays over the speakers.

Changing Desktop Environments and Window Managers does not change this. Dropping to a terminal via ctrl+alt+F1 seems to be unaffected. I thought this was an issue with X11 as per this (https://wiki.ubuntu.com/X/Troubleshooting/Freeze), but if I ssh into the machine, it becomes unresponsive after the crash.

Ask Ubuntu thread: http://askubuntu.com/q/873626/644072

nick@nick-Blade-Stealth:~$ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.10.0-rc7+ root=UUID=dc12ad20-3a6a-436d-96b1-cad68ca1bcef ro drm.debug=0xe plymouth:debug i915.enable_rc6=0 button.lid_init_state=open
nick@nick-Blade-Stealth:~$ cat /proc/version
Linux version 4.10.0-rc7+ (nick@nick-Blade-Stealth) (gcc version 6.2.0 20161005 (Ubuntu 6.2.0-5ubuntu12) ) #1 SMP PREEMPT Sat Feb 11 00:21:50 PST 2017
nick@nick-Blade-Stealth:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.10
Release: 16.10
Codename: yakkety

Tags: yakkety
Revision history for this message
Nick Desaulniers (ndesaulniers) wrote :

Oops, I did not mean to file this against the gcc-defaults package. Can someone please help me move it to the appropriate place?

Revision history for this message
Jorge Garza (jgarzagu) wrote :

Hi,

I also have a Kaby Lake processor and can confirm this weird error on kernel 4.9.10 and using Linux Mint 18.1. When hitting CAPS key the display and kernel crashes.

Thanks!

Revision history for this message
Jorge Garza (jgarzagu) wrote :

Okay,

So I have a New Razer Blade Stealth and I guess you also have one.
I fixed the problem installing the razer keyboard driver which you can find here:
https://terrycain.github.io/razer-drivers/

After installing the driver you should see it doing
$ lsmod | grep "razerkbd"

Best!

Revision history for this message
jcarthew (jcarthew) wrote :

I can confirm this issue is occurring for me as well. I have run all the latest updates and I still have the issue. The Razerkbd driver doesn't fix it. This is going to be a hard one to trace as it doesn't appear to cause a crash dump or log to be generated.

Revision history for this message
Nick Desaulniers (ndesaulniers) wrote :

The red hat bug is the most comprehensive so far: https://bugzilla.redhat.com/show_bug.cgi?id=1412877

Revision history for this message
Matthias Klose (doko) wrote :

according to the referenced issue in the red hat tracker, this is a kernel bug.

affects: gcc-defaults (Ubuntu) → linux (Ubuntu)
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Missing required logs.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1663841

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
tags: added: yakkety
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers

Remote bug watches

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