Wednesday, October 14, 2015

cannot connect centos (dell precision) laptop to 2 external monitors (but I can connect to 1 external monitor)

This is my first post here and hope I am following the rules of the forum.
I reviewed Connecting 2 External Monitors to a Laptop? and confused with hardware terminology to figure out if my Dell Precision requires additional hardware or additional software or just some configuration.



I cannot make Linux(centos 6.5) connect to 2 external monitors. I was able to connect to 1 external monitor by running




 $xrandr --auto --output DP-0 --right-of LVDS-0


Here are the display properties



  $xrandr

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384
VGA-0 disconnected (normal left inverted right x axis y axis)

LVDS-0 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
1366x768 60.0*+ 40.1
DP-0 connected (normal left inverted right x axis y axis) 1920x1080 60.0 + 1440x900 59.9
1280x1024 60.0
1280x800 59.8
1152x864 75.0
1024x768 70.1 60.0
800x600 60.3 56.2
640x480 59.9
DP-1 disconnected (normal left inverted right x axis y axis)

DP-2 connected 1920x1080+0+0 (normal left inverted right x axis y axis)
477mm x 268mm 1920x1080 60.0*+ 1440x900 59.9
1280x1024 60.0
1280x800 59.8
1152x864 75.0
1024x768 70.1 60.0
800x600 60.3 56.2
640x480 59.9
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)

DP-5 disconnected (normal left inverted right x axis y axis)
DP-6 disconnected (normal left inverted right x axis y axis)


Edit



I tried the following commands (and nothing happened)



 $xrandr --auto --output DP-0 --right-of DP-2



Here is the info on the vga card



 $lspci | grep -E "VGA" 
01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [Quadro 1000M] (rev a1)


And more on VGA



 $sudo lspci -v -s 01:00.0 


01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [Quadro 1000M] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Dell Device 04a3
Flags: bus master, fast devsel, latency 0, IRQ 43
Memory at dc000000 (32-bit, non-prefetchable) [size=16M]
Memory at d0000000 (64-bit, prefetchable) [size=128M]
Memory at d8000000 (64-bit, prefetchable) [size=32M]
I/O ports at 7000 [size=128]
[virtual] Expansion ROM at dd000000 [disabled] [size=512K]
Capabilities: [60] Power Management version 3

Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00
Capabilities: [b4] Vendor Specific Information: Len=14
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024
Kernel driver in use: nvidia
Kernel modules: nvidia, nouveau, nvidiafb



Can I connect to 2 external monitors and extend the display just by configuring? If not, what is the reliable/easiest hardware/software I have to buy



****EDIT****
-Model is M4600 (Dell Precision); complete specs are here (I assume my laptop support all these) http://www.dell.com/downloads/global/products/precn/en/precision-m4600-specsheet.pdf



-VGA specs as per above specs sheet:



Graphics2 • AMD FirePro M5950 Mobility Pro with 1GB GDDR5 dedicated memory
• NVIDIA Quadro 1000M with 2GB GDDR3 dedicated memory
• NVIDIA Quadro 2000M with 2GB GDDR3 dedicated memory




Display Options • 15.6" HD(1366x768): anti-glare, LED-backlit
• 15.6" HD(1366x768): multi-touch (supports stylus / four finger simultaneous touch), LED-backlit
• 15.6" FHD(1920x1080): UltraSharp™, wide view, anti-glare, LED-backlit, Premium Panel Guarantee5
• 15.6" FHD(1920x1080): UltraSharp™ with PremierColor technology, IPS, wide view, anti-glare, LED-backlit,
Premium Panel Guarantee5



-There is HDMI port (behind); I work for startup (so hopefully what I have is business grade); could not figure our display port (but let us assume it there)



-Also I am using docking station where my 2 monitors are connected to (I tested 2 external monitors working on this docking station from a DIFFERENT windows laptop and I am trying to do it for this centos laptop now)




Can it be as simple as a centos shell command to hook up the laptop to 2 monitors (if so what is that command)

No comments:

Post a Comment

linux - How to SSH to ec2 instance in VPC private subnet via NAT server

I have created a VPC in aws with a public subnet and a private subnet. The private subnet does not have direct access to external network. S...