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Archived This topic has been archived. Information and links in this thread may no longer be available or relevant. If you have a question create a new topic by clicking here and select the appropriate board.
HP Recommended

Dear All,

 

I have an Elitebook 840 G1 with Dual ATI + AMD graphics and HP 2013 UltraSlim-Docking Station. I want to plug external monitor to the one of Displayports located on the Dock. The external monitor works if I'm running Windows, but I can't enable it on the Linux. From the other side HP's Elitebook build-in Display port works on both OS. HP advertise the Linux support on the Product page. I'm wondering if the Display port on the Dock are supported.

 

Thank you for your advice.

12 REPLIES 12
HP Recommended

What version of Linux? Odds are for something that specific you would have to manually edit the xorg configuration file. How you do that varies by distribution. Then there is the problem of figuring out exactly how to reconfigure it.

HP Recommended

Thank you for your answer. I tried with Kubuntu 14.04 and with Ubuntu 14.04

In both versions there is an option to select graphics driver. In case if open cource X.Org driver is selected the Display ports on the dock can be detected but the resolution is 1366 x 768 only. AMD Catalyst drivers doesn't detect the Display Ports on the Dock.

HP Recommended

Kubuntu and Ubuntu are the same thing just KDE vs. Gnome desktop. I found this online which appears to respond to a similar issue:

 

https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_T420s

 

Apparently for nVidia Optimus a program called "Bumblebee" allows reconfiguration to enable the digital display ports on a dock. I will keep looking to see if there is something similar for the AMD graphics you have.  

 

Similar issues:

 

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=743137

 

http://forum.notebookreview.com/linux-compatibility-software/744597-zbook-14-linux.html

HP Recommended

Yes, seems it is the same issue I have. I will be glad if you will find any solution, or forward it further to HP. You see it seems strange for the vendor to declare Linux as supported OS and don't explain the Display Port on the Dock issue.

BTW, I've bought a dock exactly for the second monitor.

 

Anyway thank you.

HP Recommended

Hello,

 

Are they any update regarding the DisplayPort issue on the Dock?

 

HP Recommended

Hi,

I have the same issue with two external monitor attached to the dock.

 

I tried a few linux distro (ubuntu, suse, fedora) and I found that no-one support by default the external monitors but you can try to install the linux drivers (available on this site for SuSE and by repos for Ubuntu) and get something more working.

 

Something more but not all. After the drivers installation - and a lot of trick - I've got the external monitors detected on SuSE but with a wrong resolution (very low), JUST in mirror mode and totaly not integrated into the system (for example I was able to move the mouse pointer on the external monitors but not able to drop there any window).

 

After I wasted a lot of time, vastly frustrated I moved back on windows. But I totally agree to don't pass off the laptot as supported by linux if it is NOT or only partially.


Waiting for a help or for a new driver release (PS the new beta drivers available on the HP site don't fix the problem)

 

Andrea

HP Recommended

Same here. Support for external monitor via docking station would be great.

 

@andreaz23: Can you describe what "tricks" you did? 🙂

HP Recommended

Nothing of special @Naraesk.

 

With "tricks" I mean that just installing the drivers for linux - available on the HP site - doens't make the monitors working. First of all because trying to generate the precompiled rpms with the ATI installer didn't produce any package the 100% of times I tried (with a fresh installation of suse).

 

So, to install the drivers, you have to use the generic installtion that needs a lot of stuff to compile the code on the system. Last, you need to run the installed Ati catalyst tool to select the proper option in order to enable the external monitors.

 

The process is not so simple and not so well documented. And at the end it isn't useful to make the slim dock working.

 

Andrea

 

HP Recommended

Is there already an update to this issue?

This issue can as well be found here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1376581

My configuration:
- Ubuntu 14.04, with all updates (Ubuntu 3.13.0-37.64-generic 3.13.11.7)
- EliteBook 840 G1 connected to a HP ultraslim docking station 2013.
- 1 Acer B273HU connected to the DP of the docking

When connecting the monitor to the DP of the Laptop everything works fine.
When connecting the monitor to the DP of the Docking Station nothing happens.

In addition to the internal DP the VGA Port of Docking Station works as well fine (so finally only the 2 DPs of the Docking Station don't work).

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