When the global scaling factor is set to 2, some dialogs occasionally start changing their window size causing very high CPU activity.
This occurs for example in dconf-editor while searching: It appears dconf-editor tries to adjust the window dimensions to the size of the content and reduces the window size until it is unusable. This causes very high CPU activity and freezes the window content.
It also happens when (then) resizing the window width (→) or height (↓) afterwards, it tries to revert to the previous window size. However, the only way to resize the window back so that it doesn't reduce its size is by dragging the window corner (↓→).
This issue happens also in other applications, for example in apport-dialogs when expanding the collapsed details view.
This does not happen when the global scaling factor is set to 1. It could be related to the new window resizing method that updates the window content.
org.gnome.desktop.interface.scaling-factor = 2
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.1.2+14.04.20140321-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6
Uname: Linux 3.13.0-17-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Fri Mar 28 16:07:47 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-02-02 (53 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140201)
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
Does nobody else see this issue??
It happens in quite many applications: apport-gtk, bluetooth configuration, gnome-sudoku, dconf-editor, control center / input methods, a couple of file save dialogs.
It happens on a new user account as well, so I assume it is not caused by any configuration files.