Bug 695227

Summary: Notification Area and Window Cursor Boundary on Dual Head Systems.
Product: [Fedora] Fedora Reporter: David Le Sage <dlesage>
Component: gnome-shellAssignee: Owen Taylor <otaylor>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: unspecified    
Version: 15CC: bnocera, maxamillion, mclasen, otaylor, samkraju, vhumpa, walters
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Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2012-08-07 17:37:47 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
Image depicting invisible boundary between monitors that blocks mouse temporarily after notification area has popped up. none

Description David Le Sage 2011-04-11 05:57:48 UTC
Description of problem:
This bug is a little quirky and difficult to explain.  I have a dual-head system with a single desktop spanning two screens.  If I take the mouse down to the bottom, left-hand corner of the primary (leftmost) monitor, the notification area pops up as expected.  

If I now immediately move the mouse cursor to the rightmost (secondary) monitor, I cannot move it back to the first one.  A "barrier" appears, blocking the mouse from moving any further left.  However, this only affects the bottom half of the right-hand monitor.  If I move the mouse further up, it can move over the "top" of the barrier.  The barrier then disappears and I can move the mouse back and forth between the two monitors until I trigger the notification area to pop-up again at which time the "barrier" reappears.  

Version-Release number of selected component (if applicable):
gnome-shell-3.0.0.2-1.fc15.x86_64


How reproducible:
Every time.

Steps to Reproduce:
1. Set up a dual-head system with a single desktop spanning two screens.
2. Go to the left-hand screen.  
3. Trigger the notifications area to pop up.
4. Move mouse over to the right hand screen.
5. Try to move mouse back to left-hand screen.
  
Actual results:
Cannot move mouse back.  It is as is you have reached the edge of the screen, even though it is only the edge of the monitor and the desktop, in fact, spans the two screens.

Expected results:
Should be able to move mouse back and forth, uninterrupted, across the two desktops.

Additional info:

Smolt profile:  http://www.smolts.org/client/show/pub_97f2bc7d-2209-49fd-885d-3ce26fe9b1f4

Screenshot forthcoming.

Comment 2 Vitezslav Humpa 2011-04-23 13:05:43 UTC
What are the resolutions and mutual position of the two two screens? See the Monitors settings in the System Settings, whether the left display isn't in fact covering just the top part of the right's side due to smaller its smaller height. Although if that is the case, the "block" should still not disappear sometimes.

Comment 3 Matthias Clasen 2011-04-27 13:19:29 UTC
The fact that there is a barrier preventing you from moving the pointer into 'dead space' of non-rectangular multi-monitor layouts is intentional. Is that what you are describing ? Or are you saying that the barrier extends even between the 'connected' parts of the monitor edges ? And how is the notification bar relevant to your issue ?

Comment 4 David Le Sage 2011-04-27 21:54:35 UTC
Matthias,


Normally, I can move the mouse between the two screens without any block. It is only after I trigger the notification bar, that the block temporarily appears.  In other words, I can normally move the mouse cursor from the right screen to the left screen over that area unimpeded.  However, if I the notification area pops up and then disappears again the "block" appears.


Vitezslav, my left-most monitor is set to 1024*768 and the right-most monitor is set to 1280*1024/


Hope this helps.  Let me know if you need further clarification.

Comment 5 Bastien Nocera 2011-05-04 14:31:32 UTC
(In reply to comment #4)
> Matthias,
> 
> 
> Normally, I can move the mouse between the two screens without any block. It is
> only after I trigger the notification bar, that the block temporarily appears. 
> In other words, I can normally move the mouse cursor from the right screen to
> the left screen over that area unimpeded.  However, if I the notification area
> pops up and then disappears again the "block" appears.
> 
> 
> Vitezslav, my left-most monitor is set to 1024*768 and the right-most monitor
> is set to 1280*1024/
> 
> 
> Hope this helps.  Let me know if you need further clarification.

That's not a bug either, it's on purpose so that the hit target for the notification bar is easier to get to.

Comment 6 Fedora End Of Life 2012-08-07 17:37:49 UTC
This message is a notice that Fedora 15 is now at end of life. Fedora
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