how to debug X/mouse events [WAS: mouse/keyboard not responding under Xorg]

[michael]

I've not had a reply re my problem with an unresponsive mouse/ 
keyboard (see below for details) so was wondering if there's a  
pointer to debugging X that may help? When the kyb "freezes" it is  
still alive since /dev/input/... shows characters (not sure how to do  
similar for mouse clicks)

thanks, michael



Begin forwarded message:

> From: michael <cs at networkingnewsletter.org.uk>
> Date: 3 January 2008 15:51:35 GMT
> To: xorg at lists.freedesktop.org
> Subject: mouse/keyboard not responding under Xorg
>
> I've not managed to define precisely when I get problems but I'm
> noticing
> the following symptoms and was wondering if some kind soul would  
> help me
> debug what's going on in order to get to a solution? Thanks, Michael
>
> set-up: etch, gnome (eg gnome-core 2.14.3.6), metacity 2.14.5-4 and
> Dell/Logitech USB optical mouse (seems to work fine in WinXP), with
> nVidia graphics card/TwinView and 2 monitors (diff resolutions)
>
> symptoms (occasional and not sure how to repeat)
>
> a) double clicking won't select anything
> b) in evolution, clicking on a new message or folder has no effect
> c) the cursor (arrowhead) disappears - if I set prefs to show  
> cursor by
> depressing 'CNTL' I get the moving rectangles but there's no cursor
> there)
> d) focus doesn't move to new window (as it should and usually does)
>
> I think the following is also a symptom but not 100% sure:
> e) doing ALT-TAB to move between windows does nothing on very first
> ALT-TAB
>
> If it's the keyboard that's failed then using I also cannot get Gnome
> menus (it selects the top level but nothing is shown) but can use the
> mouse to open more new app/windows and then at some pt the keyboard
> seems to be 'reset' such that it starts working again.
>
> I've tried KDE and that also has the keyboard not responding (eg if I
> try to switch desktops quickly then the keyboard stops responding) -
> opening the control centre and changing options in there appears to
> 'reset' the keyboard.
>
> Any thoughts either on what's going on or how to debug it to narrow
> down the issues? I've asked on the Debian mailing list but am still
> stuck. I've had this line in my xorg.conf re Mouse device:
> 	Option         "Protocol" "ImPS/2"
> although it's a USB mouse I'm using, but commenting it out I still  
> see the same issues
>
>
> Thanks, M
>
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