Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1309919
Title:
Xorg causing 100% cpu load
Status in “xorg” package in Ubuntu:
Confirmed
Bug description:
EDIT3: I'll withdraw this bug report.
Primary problem here was the combination of "xfce-compositor" with an slow
graphics card (mga).
Disabling the "compositor" setting in xfce did it for me. Disabling showing
window content on resize+move makes things faster on this graphics card, too.
EDIT2: it seems that even the cpu graph in the top bar produces enough load
to get Xorg with Matrox G450 (PCI) busy.
Without cpu graph responsiveness is still far slower than with 13.10.
EDIT: after deleting almost every file+directory which starts with "."
in my home directory, this problem has vanished, but overall
performance seems slower than with 13.10.
Kind regards,
Jochen
Dear reader,
after upgrading from 13.10 to 14.04 (xubuntu, amd64), Xorg uses 100%, overall
reaction is slow and mouse pointer is flickering.
Attachment contains an strace of approx. 5 seconds
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: XFCE
Date: Sat Apr 19 12:46:25 2014
InstallationDate: Installed on 2012-09-28 (567 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to trusty on 2014-04-19 (0 days ago)
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