** Description changed: ---- - After I plug in a external monitor to my laptop, and change some display settings, the screen of the laptop displays abnormal. + + After I plug in a external monitor to my laptop, and change some display + settings, the screen of the laptop displays abnormal. A possible reason of this issue is about change resolution to a un-fit resolution, such as from 1366x768 to 640x480. Or change refresh rate to some strange number, such 59Hz. - Since all behaviour is normal if without external monitor, thus this may be due to two monitors can't be sync together. I think such changes should be allow to sufficient user's preference. + Since all behaviour is normal if without external monitor, thus this may be due to two monitors can't be sync together. I think such changes should be allow to sufficient user's + preference. + + Steps to repeat: + 1. plug in an external monitor + 2. Open Display Preference Application on the laptop + 3. Change resolution from 1366x768 to 640x480 + 4. Change refresh rate to 59Hz + + What happens: + Laptop screen outputs some garbage data on the right-upper part, some part of screen didn't display correctly. + + What should happen: + Any changes about resolution or refresh rate should display correctly after plug in a external monitor. + ---- + ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: xorg 1:7.7+1ubuntu5 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 ApportVersion: 1:7.7+1ubuntu5 Architecture: amd64 CheckboxSubmission: 017452a27eca3c8b498abbfa5ef91db9 CheckboxSystem: ecaaad6fa1e0799a0aa1126bf620f39e Date: Mon July 8 11:09:43 2013 InstallationMedia: Ubuntu 12.10.1 "Quantal Quetzal" - Release amd64 (20121017.1) PackageArchitecture: all ProcEnviron: - TERM=xterm - PATH=(custom, user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, user) + LANG=en_US.UTF-8 + SHELL=/bin/bash SourcePackage: xorg UpgradeStatus: Upgraded to precise on 2011-11-08 (178 days ago)
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1197437 Title: Laptop monitor display incorrectly after plug in an external monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1197437/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
