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Old 04-10-2014, 04:27 PM   #1
thedatapusher
LQ Newbie
 
Registered: Mar 2011
Posts: 16

Rep: Reputation: Disabled
Question Dual Monitors Failing on CentOS 6.5 when on Docking Station


Hi all!

Triple boot System.

I have 2 monitors connected to my docking station. Both monitors work perfectly with Windows 7 Ent. I can keep the laptop closed (clamshell mode) and use the external keyboard, video and mouse with no issues. Linux is another story.

Whenever I boot to CentOS instead of a login prompt, I am greeted with a generic CentOS blue bubble background with no login prompt. If I blindly hit enter + password + enter it will log me in to the first account in the list. But then I am stuck again logged in, but all I see is the same blue bubble background on one external monitor and a black monitor as well. I know I am logged in because if I right click on the desktop, I get a contextual pop-up menu.

If I open my laptop, I see the normal desktop and can see my task bar etc. If I hit FN + F8 on the laptop keyboard I am able to move the main desktop to where the main monitor was just showing the blue BG. However, as soon as I close the notebook, I am stuck in a monitor with no tools just like before. Just a monitor with a blue bubble bg.

Even odder is the fact that when I go to the display settings on the laptop display, I see ALL 3 monitors. I see the laptop monitor and the two externals connected to the dock. It even sees the correct model numbers of the displays. So it knows they are there. I just can't use that 3rd monitor. The system sees it, lets me move it and identifies the resolution and model number, but I can't use it at all. I can even move my mouse to where it should be and it dissipaters.

I would like to:
  • Run a dual monitor setup
  • Run a dual monitor setup and utilize both monitors correctly - Not have one useless and one blacked out yet active
  • Be able to run this setup with the laptop closed unless obviously I am in the field and would not have ext mons
  • Ideally it would be great if I were able to boot my laptop closed and connected to dock and have it solely use my 2 external monitors without the laptop ever being opened. Just hit the power button on the dock and go from there.

I know that there must be a simple solution, but I am out of ideas now.

One thing to add is that sometimes when I close the laptop, it all goes black, the caps lock key keeps flashing and the only way to get it back is to hard power down or ssh in.

Uploading a pic for reference.

Stats to Assist:
  • Dell Precision M4800 Laptop
  • Intel Core i7-4900MQ @ 2.80GHz + 16GB RAM
  • Docking Station "E Port Plus II"
  • 2 x Dell P2414H via DisplayPort on back of Dock
  • Standard USB mouse & keyboard (no FN keys) via back of Dock
  • NVIDIA Quadro K2100M GFX Card
  • CentOS 6.5 Clean install as Basic Server
  • Packages installed: Desktop (Desktop + X Windows System + Fonts) + Applications (Internet Browser) + Virtualizations selected

Sorry for the long post. Wanted to get as much detail as possible to assist in finding a resolution to this issue.

Thank you!
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Last edited by thedatapusher; 04-10-2014 at 04:50 PM. Reason: Addendum
 
Old 04-11-2014, 05:38 PM   #2
thedatapusher
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Registered: Mar 2011
Posts: 16

Original Poster
Rep: Reputation: Disabled
Over a 100 views and no answers. i tried to be as detailed as possible, so if there is any other info you need let me know. Would an hinv help or a dmidecode with anything grepped?

Thanks again _
 
Old 04-15-2014, 08:20 PM   #3
thedatapusher
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Registered: Mar 2011
Posts: 16

Original Poster
Rep: Reputation: Disabled
bump
 
Old 04-23-2014, 01:39 PM   #4
thedatapusher
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Registered: Mar 2011
Posts: 16

Original Poster
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bump bump
 
Old 04-23-2014, 01:55 PM   #5
szboardstretcher
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Registered: Aug 2006
Location: Detroit, MI
Distribution: GNU/Linux systemd
Posts: 3,836

Rep: Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360
You need to calm down. This is a volunteer forum.

And your post gets self bumped after x days, no need to do that on your own.

Also,.. you replied to your own post, trying to be snarky, causing this post to look 'answered' or 'tended to' or 'in discussion' from most points of view.

If someone knows what is going on, rest assured they will answer you. But don't be pushy. It just makes you look like a tool, and you are unlikely to get help if you come off that way.

Now, the easy answer is that Centos/SL/Rhel isn't meant for dual monitors, fancy set ups. It's meant for servers. If you want fancy graphics/dual monitors and such, try Fedora.

Last edited by szboardstretcher; 04-23-2014 at 01:57 PM.
 
Old 04-23-2014, 02:15 PM   #6
thedatapusher
LQ Newbie
 
Registered: Mar 2011
Posts: 16

Original Poster
Rep: Reputation: Disabled
blah blah blah. Thanks for bringing nothing to the table but puffing your chest out.

Also fedora is for people afraid of the CLI. have fun with our testing grounds.

ZZZZZZZzzzzzzz

Last edited by thedatapusher; 04-23-2014 at 02:19 PM.
 
Old 04-23-2014, 02:52 PM   #7
szboardstretcher
Senior Member
 
Registered: Aug 2006
Location: Detroit, MI
Distribution: GNU/Linux systemd
Posts: 3,836

Rep: Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360Reputation: 1360
Quote:
you sir are a waste of space and you need to calm down. Also, fedora ism for wanna be linux users that never leave the gui
Ok.

Quote:
blah blah blah. Thanks for bringing nothing to the table but puffing your chest out.
Helping clarify the forum ettiquite that helps get answers. Not interested? Don't listen.

You are using an Enterprise OS on a laptop. Enterprise OS's are long term support, used for servers, and generally have versions of software that are technically old and out of date because they are stable and reliable. If you want support for your newer Dock and Laptop and Dual Monitors, you will want to use a more bleeding edge distro.

If you are so confident in your skills to call other people 'wanna be's' then go for Arch or Gentoo and set X up yourself. Otherwise check out Fedora or some other bleeding edge distro with the newer drivers and software able to support your newer hardware.

Install Fedora without X if you are opposed to using one of the Desktop Environments.

Last edited by szboardstretcher; 04-23-2014 at 02:55 PM.
 
  


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