Gabriel Zhi Chen, thank you for reporting this and helping make Ubuntu better.
Could you please execute the following command, as it will automatically gather
debugging information, in a terminal:
apport-collect 1434372
Please ensure you have xdiagnose installed, and that you click the Yes
button for attaching additional debugging information.
** Package changed: linux-lts-utopic (Ubuntu) => xorg (Ubuntu)
** Changed in: xorg (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1434372
Title:
[Lenovo E555] Screen of laptop will become black and never lighting
after un-plug VGA cable
Status in HWE Next Project:
New
Status in xorg package in Ubuntu:
Incomplete
Bug description:
CID: 201408-15472 Lenovo E555 (A+A) with 14.04.2 (utopic)
Steps:
1. Install 14.04.2 on E555
2. Install fglrx
3. Reboot system and log in
4. Plug in a VGA cable and switch 4 modes by display key. (external,
internal, extand and mirror)
5. Un-plug VGA cable, observe screen result.
Expected results:
Labtop screen display normally.
Actual result:
Labtop screen became black and never lighting. Only press power button off/on
machine, that could make screen light again.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-30-generic 3.16.0-30.40~14.04.1 [modified:
boot/vmlinuz-3.16.0-30-generic]
ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Mar 19 23:58:26 2015
InstallationDate: Installed on 2015-03-18 (1 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64
(20150218.1)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)
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