Bug 1727169

Summary: Multiple second delay between Alt + Tab key press and actual switching of windows
Product: [Fedora] Fedora Reporter: Christopher Bradford <bradfordcp>
Component: kwinAssignee: Daniel Vrátil <me>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 30CC: bradfordcp, jgrulich, kde-sig, me, rdieter, than
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Hardware: x86_64   
OS: Linux   
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Last Closed: 2020-05-26 16:01:34 UTC Type: Bug
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Screen recording of the issue, key press at 9 seconds, actual window switch at 29 none

Description Christopher Bradford 2019-07-04 19:51:46 UTC 
Created attachment 1587474 [details]
Screen recording of the issue, key press at 9 seconds, actual window switch at 29

Description of problem:


Version-Release number of selected component (if applicable):
5.15.2-1

How reproducible:
Consistent on my local machine

Steps to Reproduce:
1. Open GoLand, Google Chrome, and About System
2. Confirm window switching by clicking task bar
3. Press Alt + Tab
4. Wait, wiggle mouse, pass time

Actual results:
Delay of ~20 seconds until windows change, desktop appears to "freeze" except the mouse continues to move.

Expected results:
Another window comes in to focus


Additional info:
Bug filed upstream at https://bugs.kde.org/show_bug.cgi?id=409500, but the behavior started after upgrading to 5.15.5-2 from 5.15.5-1. Which appears to be a rebuild after updates to Qt. It's unclear where the issue lies.
Comment 1 Ben Cotton 2020-04-30 21:37:52 UTC 
This message is a reminder that Fedora 30 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora 30 on 2020-05-26.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained.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 EOL if it remains open with a
Fedora 'version' of '30'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 30 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.
Comment 2 Ben Cotton 2020-05-26 16:01:34 UTC 
Fedora 30 changed to end-of-life (EOL) status on 2020-05-26. Fedora 30 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. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

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