LinuxQuestions.org
Latest LQ Deal: Complete CCNA, CCNP & Red Hat Certification Training Bundle
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Debian
User Name
Password
Debian This forum is for the discussion of Debian Linux.

Notices


Reply
  Search this Thread
Old 06-24-2015, 05:30 AM   #1
achim_59
Member
 
Registered: Jan 2009
Location: Huenfeld, Germany
Distribution: Debian Jessie
Posts: 98

Rep: Reputation: 4
Question Bizarre monitor behaviour after debian jessie upgrade


Hi All,

I have a dual monitor setup. The external one is a VGA HD (Fujitsu with 1920x1200 resolution) run through an adapter which converts HDMI to VGA. The other is the laptop monitor (AU Optronics 14" with 1920x1200 resolution). The laptop only has an HDMI port, hence the adapter. I have the same image on both monitors... for reasons I won't go into here.

All this worked fine with wheezy and after the initial upgrade to jessie it still seemed OK. I have now done an upgrade, which has caused some really odd behaviour. The login screen is only displayed on the laptop monitor, not on the Fujitsu, when I boot up. I could live with that, but the laptop monitor is automatically switched off after the initial boot selection screen. That's really weird!

I can log in because I know I'm the first user on the list, so I just hit enter and type my password without actually seeing anything. Moving the mouse around shows me that the dual monitor mode is on, since the mouse "disappears" onto the laptop screen. After logging in, I get the desired single view on both screens.

I've searched a number of forums, but I cannot find anything useful. Most posts have to o with settings that are only relevant once the user is logged in. My problem has to do with the settings which are in operation before logging in.

Can anyone give me a hint as to where these settings are defined? Or maybe a website which explains how the monitors are dealt with prior to log in?

Thanks in advance.
 
Old 06-25-2015, 08:54 PM   #2
yooy
Senior Member
 
Registered: Dec 2009
Posts: 1,387

Rep: Reputation: 173Reputation: 173
seems like you need to configue "greeter"
there are several and you can mess around if you want to or just wait for a fix.
 
Old 06-30-2015, 04:01 AM   #3
achim_59
Member
 
Registered: Jan 2009
Location: Huenfeld, Germany
Distribution: Debian Jessie
Posts: 98

Original Poster
Rep: Reputation: 4
Lengthy silence...

Quote:
Originally Posted by yooy View Post
seems like you need to configue "greeter"
there are several and you can mess around if you want to or just wait for a fix.
Where can I find information about "greeter" and which flavour I have on my machine? Would a command like "find . -iname 'greeter*'" help?

I have several other things, like a non functioning IPCop, to look into at the moment (hence the lengthy silence), but I'll try finding greeter today.

If anyone else has any ideas... I'm all ears (or eyes as the case may be). I'd also like to know if anyone else has had similar difficulties after switching to jessie.

03.07.2015: I tried The aforementioned find command and indeed found a lot of stuff in /etc/gdm3. Ufortunately it's all pretty obscure so I guess I'll have to hunt around for more information.

Last edited by achim_59; 07-03-2015 at 12:57 PM. Reason: additional info
 
Old 07-29-2015, 01:17 PM   #4
fractured
LQ Newbie
 
Registered: Jul 2015
Location: Las Vegas, Nevada US
Distribution: debian jessie
Posts: 4

Rep: Reputation: Disabled
external moniter problem debian jessie

Hey ya I am having the same problem, it is kind of weird lol im also using an hdmi only.

Last edited by fractured; 07-29-2015 at 02:16 PM.
 
Old 01-15-2016, 04:22 PM   #5
7mfreeman
LQ Newbie
 
Registered: Aug 2008
Posts: 1

Rep: Reputation: 0
Have the same issue with an acer travelmate 5742
 
  


Reply

Tags
jessie, monitor


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
[SOLVED] Apache is broken after Jessie Debian 8 upgrade bcostacurta Debian 2 04-26-2015 02:06 PM
Upgrade Debian Wheezy to Jessie. hack3rcon Debian 3 04-20-2015 11:03 AM
Graphical issues after upgrade from Debian Wheezy to Jessie Caskla Linux - Newbie 3 12-02-2014 10:14 PM
lost screen resolution after Debian/Jessie upgrade j1wu Linux - Hardware 1 04-09-2014 08:17 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Debian

All times are GMT -5. The time now is 12:36 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration