[Bug 1663841] [NEW] toggling CAPS LOCK off freezes computer

[Nick Desaulniers]

Public bug reported:

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 at 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 at nick-Blade-Stealth:~$ cat /proc/version 
Linux version 4.10.0-rc7+ (nick at 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 at nick-Blade-Stealth:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 16.10
Release:	16.10
Codename:	yakkety

** Affects: gcc-defaults (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1663841

Title:
  toggling CAPS LOCK off freezes computer

Status in gcc-defaults package in Ubuntu:
  New

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 at 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 at nick-Blade-Stealth:~$ cat /proc/version 
  Linux version 4.10.0-rc7+ (nick at 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 at nick-Blade-Stealth:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 16.10
  Release:	16.10
  Codename:	yakkety

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