Ubuntu

Laptop screen blank after login when secondary external monitor is not connected

Asked by Ramon on 2012-04-23

Ubuntu does not switch back automatically to only monitor present when booting after disconnecting external monitor.

I've experienced this in two laptops: when possible I work with my laptop connected to an external screen via the VGA port. The problem comes when I boot the computer without that secondary screen connected:
* The login screen comes out ok.
* After login the screen goes black, but I can hear the login sound.
* If I hit ctr + alt + backwards-delete and login again **most of the times** it is fixed, but not all.
* If I log in as a different user everything is OK. Then I log in as my user and it works.

Ubuntu should be able to detect automatically that there is no external monitor present and switch to the laptop monitor.

Question information

Language:
English Edit question
Status:
Expired
For:
Ubuntu xorg Edit question
Assignee:
No assignee Edit question
Last query:
2012-06-06
Last reply:
2012-06-22

What make and model laptop?

Ramon (donramon) said : #2

LDLC KS6052W-01
HP Pavillion 2030be dm3

Launchpad Janitor (janitor) said : #3

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

Ramon (donramon) said : #4

Still have the same issue. To have a screen I have to plug a monitor. Although I have turned on the laptop display with that monitor on, if I reboot it goes blank again after login.

I've managed to get my screen back with my username after going into recovery mode. Failsafe would not load after second screen asking me what I wanted to do (no mouse to click nor keyboard working).

Which is the configuration file that keeps the information about the monitors and where is it?

Ramon (donramon) said : #5

BTW, made a mistake in #2, the HP is a DM3-1120eb

Ramon (donramon) said : #6

I've recorded a video to show you what happens: http://www.youtube.com/watch?v=HBIB0tf5cos

Launchpad Janitor (janitor) said : #7

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

Ramon (donramon) said : #8

Hi guys, I still need help with this. Any hinters will be appreciated.

Launchpad Janitor (janitor) said : #9

This question was expired because it remained in the 'Open' state without activity for the last 15 days.