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Bug#268363: xserver-xfree86: Hammering randomly on the keyboard results in strange behaviour

Package: xserver-xfree86
Version: 4.3.0.dfsg.1-6
Severity: normal

Steps to reproduce:

1) Take a one year old child
2) Allow said child to hammer at random on your keyboard

After this treatment, any keyboard input results only in characters
appearing which (I think) have the high-bit set. eg pressing m results
in a mu, d a lower-case delta (IIRC) etc etc.

Using Alt-Tab-F<x> to switch to a console results in a complete
console lockup -- no response to any keyboard input
whatsoever. Logging in over the network, I can kill & restart X which
solves the problem.

I haven't nailed down a precise key sequence which causes the problem
(for hopefully obvious reasons!). It probably has something to do with
the combinations of ctrl, alt etc and various other keys, since the
hammering happens mostly on the bottom of the keyboard!

Is there some kind of magic key combination which will result in meta
being a sticky key? I haven't been able to find anything in the docs,
but that might explain the observed X behaviour (although not the
console lockup which is presumably a kernel/X interaction triggered by
X putting the keyboard in some weird state).



-- Package-specific info:

-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.8-1-k7
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8

Versions of packages xserver-xfree86 depends on:
ii  debconf [debconf-2.0]     1.4.32         Debian configuration management sy
ii  libc6                     2.3.2.ds1-16   GNU C Library: Shared libraries an
ii  xserver-common            4.3.0.dfsg.1-6 files and utilities common to all 
ii  zlib1g                    1:    compression library - runtime

-- debconf information:
  xserver-xfree86/config/monitor/screen-size: 17 inches (430 mm)
* xserver-xfree86/config/device/use_fbdev: false
* xserver-xfree86/config/monitor/selection-method: Advanced
* xserver-xfree86/config/monitor/lcd: false
* xserver-xfree86/config/device/driver: mga
* xserver-xfree86/config/monitor/vert-refresh: 50-160
* xserver-xfree86/config/display/default_depth: 24
* xserver-xfree86/config/display/modes: 1280x960, 1152x864, 1024x768, 800x600, 640x480
  xserver-xfree86/config/modules: GLcore, bitmap, dbe, ddc, dri, extmod, freetype, glx, int10, record, speedo, type1, vbe, xtt
* xserver-xfree86/autodetect_video_card: true
* xserver-xfree86/config/inputdevice/keyboard/variant:
* xserver-xfree86/config/inputdevice/mouse/port: /dev/psaux
  xserver-xfree86/config/write_files_section: true
  xserver-xfree86/autodetect_monitor: true
* shared/default-x-server: xserver-xfree86
  xserver-xfree86/config/inputdevice/mouse/emulate3buttons: true
* xserver-xfree86/config/inputdevice/keyboard/layout: gb
* xserver-xfree86/config/monitor/horiz-sync: 27-96
  xserver-xfree86/autodetect_mouse: true
  xserver-xfree86/config/monitor/mode-list: 1280x960 @ 60Hz
* xserver-xfree86/config/inputdevice/keyboard/rules: xfree86
* xserver-xfree86/config/inputdevice/keyboard/model: pc105
  xserver-xfree86/config/write_dri_section: true
  xserver-xfree86/config/inputdevice/mouse/zaxismapping: true
* xserver-xfree86/config/inputdevice/keyboard/options:
* xserver-xfree86/config/inputdevice/mouse/protocol: PS/2

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