Very odd issue, dead spots on screen

[John Moser]

I killed and restarted compiz and restarted it and this happened:

http://img3.imageshack.us/img3/7030/screenshotzvb.png


Other strangeness ... another one appeared.

I'm starting to think that these are right-click context menus that
failed to properly initialize.  They're coming from Chromium.



bluefox at icebox:~$ xwininfo -all

xwininfo: Please select the window about which you
          would like information by clicking the
          mouse in that window.

xwininfo: Window id: 0x512035b "Chromium"

  Root window id: 0x156 (the root window) (has no name)
  Parent window id: 0x156 (the root window) (has no name)
     1 child:
     0x5120359 (has no name): ()  1x1+-1+-1  +404+308


On Mon, Jul 11, 2011 at 1:53 AM, Christopher James Halse Rogers
<raof at ubuntu.com> wrote:
> On Sun, 2011-07-10 at 22:04 -0400, John Moser wrote:
>> I can't click links or pictures or highlight text...
>>
>> so I unmaximize Chrome, move it, and then click it.
>>
>> Can't highlight in any other app either ... it's that rectangle of the
>> screen, it's like there's an invisible window overlayed and I can't
>> click or right click through it.
>>
>> I don't know how to diagnose this.
>>
>
> If you run “xwinprop -all” from a terminal and click on the dead area of
> the screen you'll probably find there's an InputOnly window, probably
> also with the OverrideRedirect flag set.  If you're lucky it will have
> set _NET_WM_PID so you'll be able to work out the pid, and hence
> program, which owns it.
>
> This can sometimes be caused by compiz stacking bugs.  It's generally
> not an X issue; the server is just doing what's been asked of it.
>
> Chris
>