Public bug reported:
I have a laptop that I connect to an external monitor. After I open the
lid and hit a button to wake the computer I will connect the HDMI cable
for the monitor. After plugging in the HDMI, the login screen freezes
intermittently so I can't type in my password. The mouse is missing and
unresponsive and the keyboard doesn't type anything.
To fix this I press Ctrl-Alt-F1 and log into the terminal. I then use
the command "sudo service lightdm restart" to restart the window
manager. This fixes the login issue, however it also closes all of the
open applications that I had on suspend, which is not desirable.
Sometimes, after typing in my password once I've restarted lightdm, the
display will get locked into a weird "refresh" state, where the user
session doesn't start and the screen is stuck with no window manager, no
dash, and the background is partially on both screens.
If the computer gets into this weird display mode then the only fix is
to reboot. I would like to be able to plug in the HDMI from a sleep and
be assured that the computer can recover the running session without
crashing the login screen or the display manager.
Repro steps:
- Close laptop lid to put it to sleep
- Connect HDMI cable
- Open lid and press button (optionally, open lid then connect cable)
Graphics:
- Intel HD 4000
Computer:
- Lenovo Yoga Pro 2
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: lightdm 1.12.3-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-34.45-generic 3.16.7-ckt8
Uname: Linux 3.16.0-34-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Apr 7 07:14:29 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-12-18 (110 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: lightdm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug utopic
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Touch seeded packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/1441193
Title:
Login screen crashes after HDMI cable is plugged in, resumed from
suspend
Status in lightdm package in Ubuntu:
New
Bug description:
I have a laptop that I connect to an external monitor. After I open
the lid and hit a button to wake the computer I will connect the HDMI
cable for the monitor. After plugging in the HDMI, the login screen
freezes intermittently so I can't type in my password. The mouse is
missing and unresponsive and the keyboard doesn't type anything.
To fix this I press Ctrl-Alt-F1 and log into the terminal. I then use
the command "sudo service lightdm restart" to restart the window
manager. This fixes the login issue, however it also closes all of the
open applications that I had on suspend, which is not desirable.
Sometimes, after typing in my password once I've restarted lightdm,
the display will get locked into a weird "refresh" state, where the
user session doesn't start and the screen is stuck with no window
manager, no dash, and the background is partially on both screens.
If the computer gets into this weird display mode then the only fix is
to reboot. I would like to be able to plug in the HDMI from a sleep
and be assured that the computer can recover the running session
without crashing the login screen or the display manager.
Repro steps:
- Close laptop lid to put it to sleep
- Connect HDMI cable
- Open lid and press button (optionally, open lid then connect cable)
Graphics:
- Intel HD 4000
Computer:
- Lenovo Yoga Pro 2
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: lightdm 1.12.3-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-34.45-generic 3.16.7-ckt8
Uname: Linux 3.16.0-34-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Apr 7 07:14:29 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-12-18 (110 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1441193/+subscriptions
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