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Bug 1060057 - gnome-shell hammers the cpu in 3 monitor setup
Summary: gnome-shell hammers the cpu in 3 monitor setup
Alias: None
Product: Fedora
Classification: Fedora
Component: gnome-shell
Version: 20
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Owen Taylor
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2014-01-31 10:04 UTC by Lukas Bezdicka
Modified: 2015-06-29 14:54 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2015-06-29 14:54:12 UTC

Attachments (Terms of Use)

Description Lukas Bezdicka 2014-01-31 10:04:38 UTC
Description of problem:
gnome-shell hammers the cpu in 3 monitor setup. See below 219cpu means more than 2 cpus were working on simple window switch.
11969 social    20   0 2064108 460488  45484 S 219.2  5.7  34:04.84 gnome-shell                                                                                                                       

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

How reproducible:

Steps to Reproduce:
1. grab some hardware capable of hawing 3 monitors in my case lenovo T420s
2. on T420s plug in monitor to display port and another one to vga port, everything works somewhat fine and monitors are detected
3. observe total slow down of system as gnome-shell starts to hammer cpu

Actual results:
Simple operations take full 2 cores.

Expected results:
It can eat more cpu but not as much.

Additional info:
I'm sorry for not providing more info, please just tell me what to look for.

Comment 1 Fedora End Of Life 2015-05-29 10:45:20 UTC
This message is a reminder that Fedora 20 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 20. 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bug reports from releases that are no longer maintained.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 '20'.

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.

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able to fix it before Fedora 20 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 Fedora End Of Life 2015-06-29 14:54:12 UTC
Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 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
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current release. If you experience problems, please add a comment to this

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