Bug 768152

Summary: focus not always given when due
Product: [Fedora] Fedora Reporter: Sjoerd Mullender <sjoerd>
Component: xfwm4Assignee: Kevin Fenzi <kevin>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 17CC: kevin, maxamillion, xgl-maint
Target Milestone: ---Keywords: Reopened
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-08-01 17:23:36 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
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Description Flags
xev output none

Description Sjoerd Mullender 2011-12-15 21:29:30 UTC
Created attachment 547487 [details]
xev output

Description of problem:
I use XFCE and I selected "focus follows mouse" with the shortest possible delay.
Quite often when I move the mouse cursor from one window over a second window to a third window, the focus is given to the second window instead of the third (where the mouse cursor ends up).
I'm not sure in which component the bug is, so I assigned it to a component that is involved.


Version-Release number of selected component (if applicable):
xorg-x11-server-Xorg-1.11.2-3.fc16.x86_64
xfce4-session-4.8.2-1.fc16.x86_64

How reproducible:
It happens often but by no means all the time.

Steps to Reproduce:
1.create three windows from three applications
2.move the mouse cursor quickly from window 1 over window 2 to window 3
3.
  
Actual results:
focus sticks to second window


Expected results:
focus on third window

Additional info:
Attached is xev output.  I moved the mouse cursor back and forth from firefox over Terminal (from which I started xev and which therefore contained the xev output) to xev.  I stopped (interrupted xev) when the focus was given to Terminal while the mouse cursor was inside the xev window.
Note that normally an EnterNotify event is followed by a FocusIn event (usually with a bunch of MotionNotify events inbetween), but the output ends with just the EnterNotify and MotionNotify events.

Comment 1 Kevin Fenzi 2012-02-09 21:11:48 UTC
If you adjust the delay up and move the mouse more slowly does it change anything? 
Or does the same thing?

Would you be willing to file this upstream? Or would you prefer I do so for you?

Comment 2 Sjoerd Mullender 2012-02-09 22:09:22 UTC
I remember getting really frustrated because of this bug because it happened a lot, but now I can't reproduce it anymore.
When I reported this I had xfwm4-4.8.2-1.fc16.x86_64, but now I have xfwm4-4.8.3-1.fc16.x86_64.  It looks like something has changed for the better here.
As far as I am concerned, this bug can be closed.  I can always reopen and provide the asked for details when it happens again.

Comment 3 Kevin Fenzi 2012-02-09 22:12:15 UTC
excellent. ;) 

Please do reopen or file a new one if you see this happen again.

Comment 4 Sjoerd Mullender 2012-07-06 08:17:21 UTC
Reopening since it is still actually a problem.

For quite a while now I've been bugged by this problem again.  I don't know what the significant changes was, or perhaps I was just lucky when I replied back in February.
In any case, I'm now using a fully up to date Fedora 17 (fresh install from Live CD, but with old /home), still with XFCE.

I am now running this with a slightly higher delay (see comment 1), and I have yet to experience the problem, but the problem doesn't happen all the time with a zero delay either, so it is too early to tell whether the delay helps.

I am getting the impression that the problem is worse if programs have to be paged in, i.e. when a program can't respond immediately to a focus event.  But this is pure speculation and may well be a red herring.

Comment 5 Fedora End Of Life 2013-07-04 06:02:05 UTC
This message is a reminder that Fedora 17 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 17. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '17'.

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to a later Fedora version prior to Fedora 17's end of life.

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Comment 6 Fedora End Of Life 2013-08-01 17:23:40 UTC
Fedora 17 changed to end-of-life (EOL) status on 2013-07-30. Fedora 17 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.