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[fraktalek <1236799@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

After I upgraded to 13.04 last week, my keyboard started behaving
erratically. I would press "Ctrl+Alt" and the computer would restart
(with a message that "Ctrl+Alt+Del" was pressed). Then I noticed that
the problem is with the left Ctrl key - in the terminal, when I pressed
just the left Ctrl key it would output sometimes e.g. "5~;5~" other
times it would keep printing "-----------" or "vvvvvvvvvvvvvvvvvv". The
output in the terminal without X was different and also a bit erratic.
The same for the left Alt key - in the terminal it would output e.g.
"A;3~A;3~A;3~A;3~A;3~A;3~A;". It happens randomly - sometimes the Ctrl
and Alt keys work as they should, sometimes not. I haven't noticed any
pattern to it.

I doubt it is a hardware problem because before the upgrade I had no
problem with the keyboard whatsoever. But anyway, to be sure I
disconnected and reconnected my laptop's (Thinkpad T420) keyboard. It
made no difference.

$ xprop -root | grep XKB 
_XKB_RULES_NAMES_BACKUP(STRING) = "evdev", "pc105", "us", "euro", ""
_XKB_RULES_NAMES(STRING) = "evdev", "pc105", "us,cz,de", "euro,qwerty,", "grp:s
hift_caps_toggle,grp:alt_shift_toggle"

$ gconftool-2 -R /desktop/gnome/peripherals/keyboard/kbd 
 layouts = [us	euro,cz	qwerty,de]
 options = [grp	grp:shift_caps_toggle,grp	grp:alt_shift_toggle]
 model =

xev output for left Ctrl and left Alt:

KeyPress event, serial 37, synthetic NO, window 0x3800001,
    root 0x9b, subw 0x0, time 9639209, (100,-16), root:(102,67),
    state 0x10, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyRelease event, serial 37, synthetic NO, window 0x3800001,
    root 0x9b, subw 0x0, time 9639376, (100,-16), root:(102,67),
    state 0x14, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyPress event, serial 37, synthetic NO, window 0x3800001,
    root 0x9b, subw 0x0, time 9641112, (100,-16), root:(102,67),
    state 0x10, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyRelease event, serial 37, synthetic NO, window 0x3800001,
    root 0x9b, subw 0x0, time 9641239, (100,-16), root:(102,67),
    state 0x18, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity 7.0.0daily13.06.19~13.04-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.4
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,compiztoolbox,snap,resize,mousepoll,wall,gnomecompat,vpswitch,grid,regex,imgpng,place,move,animation,expo,session,workarounds,ezoom,staticswitcher,fade,scale,unityshell]
Date: Tue Oct  8 12:03:05 2013
InstallationDate: Installed on 2011-06-06 (854 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
MarkForUpload: True
SourcePackage: unity
UpgradeStatus: Upgraded to raring on 2013-10-01 (6 days ago)

** Affects: unity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug raring third-party-packages

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https://bugs.launchpad.net/bugs/1236799

Title:
  Erratic keyboard Ctlr and Alt behavior

Status in “unity” package in Ubuntu:
  New

Bug description:
  After I upgraded to 13.04 last week, my keyboard started behaving
  erratically. I would press "Ctrl+Alt" and the computer would restart
  (with a message that "Ctrl+Alt+Del" was pressed). Then I noticed that
  the problem is with the left Ctrl key - in the terminal, when I
  pressed just the left Ctrl key it would output sometimes e.g. "5~;5~"
  other times it would keep printing "-----------" or
  "vvvvvvvvvvvvvvvvvv". The output in the terminal without X was
  different and also a bit erratic. The same for the left Alt key - in
  the terminal it would output e.g. "A;3~A;3~A;3~A;3~A;3~A;3~A;". It
  happens randomly - sometimes the Ctrl and Alt keys work as they
  should, sometimes not. I haven't noticed any pattern to it.

  I doubt it is a hardware problem because before the upgrade I had no
  problem with the keyboard whatsoever. But anyway, to be sure I
  disconnected and reconnected my laptop's (Thinkpad T420) keyboard. It
  made no difference.

  $ xprop -root | grep XKB 
  _XKB_RULES_NAMES_BACKUP(STRING) = "evdev", "pc105", "us", "euro", ""
  _XKB_RULES_NAMES(STRING) = "evdev", "pc105", "us,cz,de", "euro,qwerty,", "grp:s
  hift_caps_toggle,grp:alt_shift_toggle"

  $ gconftool-2 -R /desktop/gnome/peripherals/keyboard/kbd 
   layouts = [us	euro,cz	qwerty,de]
   options = [grp	grp:shift_caps_toggle,grp	grp:alt_shift_toggle]
   model =

  xev output for left Ctrl and left Alt:

  KeyPress event, serial 37, synthetic NO, window 0x3800001,
      root 0x9b, subw 0x0, time 9639209, (100,-16), root:(102,67),
      state 0x10, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
      XLookupString gives 0 bytes: 
      XmbLookupString gives 0 bytes: 
      XFilterEvent returns: False

  KeyRelease event, serial 37, synthetic NO, window 0x3800001,
      root 0x9b, subw 0x0, time 9639376, (100,-16), root:(102,67),
      state 0x14, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
      XLookupString gives 0 bytes: 
      XFilterEvent returns: False

  KeyPress event, serial 37, synthetic NO, window 0x3800001,
      root 0x9b, subw 0x0, time 9641112, (100,-16), root:(102,67),
      state 0x10, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
      XLookupString gives 0 bytes: 
      XmbLookupString gives 0 bytes: 
      XFilterEvent returns: False

  KeyRelease event, serial 37, synthetic NO, window 0x3800001,
      root 0x9b, subw 0x0, time 9641239, (100,-16), root:(102,67),
      state 0x18, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
      XLookupString gives 0 bytes: 
      XFilterEvent returns: False

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: unity 7.0.0daily13.06.19~13.04-0ubuntu1
  ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.4
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,compiztoolbox,snap,resize,mousepoll,wall,gnomecompat,vpswitch,grid,regex,imgpng,place,move,animation,expo,session,workarounds,ezoom,staticswitcher,fade,scale,unityshell]
  Date: Tue Oct  8 12:03:05 2013
  InstallationDate: Installed on 2011-06-06 (854 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  MarkForUpload: True
  SourcePackage: unity
  UpgradeStatus: Upgraded to raring on 2013-10-01 (6 days ago)

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