** Description changed:
- Procedure:
- 1. Boot up the laptop
- 2. Login
- 3. Plug in the external monitor
- 4. Open "Monitor Preferences"
- 5. Change laptop's resolution, from 1366x768 -> 640x480, change refresh rate.
- 6. Press "Apply"
+ ----
+ After I plug in a external monitor to my laptop, and change some display
settings, the screen of the laptop displays abnormal.
- Expect:
- Monitor displays normally corresponding to new resolution and refresh rate.
+ 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.
- Happened:
- Abnormal garbage displays on the laptop screen, please refer to attached
screenshot.
-
- Release version:
- Ubuntu 12.10
-
- Frequency:
- Always
+ 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.
+ ----
+ 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
+ SourcePackage: xorg
+ UpgradeStatus: Upgraded to precise on 2011-11-08 (178 days ago)
** Also affects: displayconfig-gtk (Ubuntu)
Importance: Undecided
Status: New
** Package changed: displayconfig-gtk (Ubuntu) => ubuntu-gnome
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https://bugs.launchpad.net/bugs/1197437
Title:
Laptop monitor display incorrectly after plug in an external monitor
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