Public bug reported:
I'm running a clean install of Xubuntu 16.04 on a Thinkpad X230 and a
docking station.
Whenever the login screen comes up -- after booting, by locking the
screen, waking up from standby -- as long as I'm plugged into the
docking station, the laptop display and all connected monitors just show
a blinking underscore and start flickering. It seems like they are
endlessly switching resolutions.
I can immediately resolve the issue for the moment by releasing the
laptop from the dock -- the greeter pops up and I can login normally.
After login, everything works as expected, including multiple monitors
etc.
I understand that all relevant logs are added to this bug automatically,
let me know if anything's missing!
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: lightdm 1.18.3-0ubuntu1.1
ProcVersionSignature: Ubuntu 4.8.0-52.55~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-52-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed May 31 14:05:16 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-05-14 (16 days ago)
InstallationMedia: Xubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
LightdmDisplayLog:
(II) AIGLX: Suspending AIGLX clients for VT switch
(II) AIGLX: Suspending AIGLX clients for VT switch
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: lightdm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
** Description changed:
- I'm running a clean install of Xubuntu 17.04 on a Thinkpad X230 and a
+ I'm running a clean install of Xubuntu 16.04 on a Thinkpad X230 and a
docking station.
Whenever the login screen comes up -- after booting, by locking the
screen, waking up from standby -- as long as I'm plugged into the
docking station, the laptop display and all connected monitors just show
a blinking underscore and start flickering. It seems like they are
endlessly switching resolutions.
I can immediately resolve the issue for the moment by releasing the
laptop from the dock -- the greeter pops up and I can login normally.
After login, everything works as expected, including multiple monitors
etc.
I understand that all relevant logs are added to this bug automatically,
let me know if anything's missing!
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: lightdm 1.18.3-0ubuntu1.1
ProcVersionSignature: Ubuntu 4.8.0-52.55~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-52-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed May 31 14:05:16 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-05-14 (16 days ago)
InstallationMedia: Xubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64
(20170215)
LightdmDisplayLog:
- (II) AIGLX: Suspending AIGLX clients for VT switch
- (II) AIGLX: Suspending AIGLX clients for VT switch
+ (II) AIGLX: Suspending AIGLX clients for VT switch
+ (II) AIGLX: Suspending AIGLX clients for VT switch
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/bugs/1694695
Title:
lightdm greeter not working while in docking station
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