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.