[arch-general] Docked Lenovo T540p Not Recognizing Dual Monitors
I unfortunately have a Lenovo T540p laptop and an UltraDock docking station. Plugged into the docking station is a Lenovo monitor via DVI and an Ilyama monitor via VGA. The monitors are not recognised by xrandr as being separate monitors, and the output mirrors each other. The output of xrandr -q: $ xrandr -q Screen 0: minimum 8 x 8, current 4560 x 1620, maximum 32767 x 32767 eDP1 connected 2880x1620+1680+0 (normal left inverted right x axis y axis) 344mm x 193mm 2880x1620 59.96*+ 50.00 2048x1536 60.00 1920x1440 60.00 1856x1392 60.01 1792x1344 60.01 1600x1200 60.00 1400x1050 59.98 1280x1024 60.02 1280x960 60.00 1024x768 60.00 800x600 60.32 56.25 640x480 59.94 VGA1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) DP2 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 255mm x 255mm 1680x1050 60.00*+ 1024x768 60.00 800x600 60.32 56.25 848x480 60.00 640x480 59.94 HDMI2 disconnected (normal left inverted right x axis y axis) VIRTUAL1 disconnected (normal left inverted right x axis y axis) eDP1 is my laptop monitor and DP2 is the Lenovo monitor. Notice the maximum screen size at the top of the output. I notice that I have more screen than I can use - how to set that to actual size as well? But the burning question is how can I get my VGA monitor to be recognised?
It looks like the VGA display is not even recignised as existing. Try it
with only the VGA plugged in, and see whether it gets recognized as such.
The Lenovo page [1] writes about one model that only some video outputs are
separate (some are exclusive). If it is so, then try chatting up tech
support (mentioned page pops up such option after some time) and ask which
ones are separate.
[1]
http://shop.lenovo.com/us/en/itemdetails/40A20090US/460/6D501EE899104FF9A362...
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Oliver Temlin
On Fri, Jun 27, 2014 at 5:51 PM, Jude Lucien
But the burning question is how can I get my VGA monitor to be recognised?
Am 27.06.2014 17:51, schrieb Jude Lucien:
I unfortunately have a Lenovo T540p laptop and an UltraDock docking station.
Plugged into the docking station is a Lenovo monitor via DVI and an Ilyama monitor via VGA.
The monitors are not recognised by xrandr as being separate monitors, and the output mirrors each other.
The output of xrandr -q:
$ xrandr -q Screen 0: minimum 8 x 8, current 4560 x 1620, maximum 32767 x 32767 eDP1 connected 2880x1620+1680+0 (normal left inverted right x axis y axis) 344mm x 193mm 2880x1620 59.96*+ 50.00 2048x1536 60.00 1920x1440 60.00 1856x1392 60.01 1792x1344 60.01 1600x1200 60.00 1400x1050 59.98 1280x1024 60.02 1280x960 60.00 1024x768 60.00 800x600 60.32 56.25 640x480 59.94 VGA1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) DP2 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 255mm x 255mm 1680x1050 60.00*+ 1024x768 60.00 800x600 60.32 56.25 848x480 60.00 640x480 59.94 HDMI2 disconnected (normal left inverted right x axis y axis) VIRTUAL1 disconnected (normal left inverted right x axis y axis)
eDP1 is my laptop monitor and DP2 is the Lenovo monitor. Notice the maximum screen size at the top of the output. I notice that I have more screen than I can use - how to set that to actual size as well?
But the burning question is how can I get my VGA monitor to be recognised?
There is a good chance the cocking station uses MST to provide all the monitor outputs. ATM Linux does not support this; good new is that it's being worked on: http://airlied.livejournal.com/79388.html -- Pierre Schmitz, https://pierre-schmitz.com
participants (3)
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Jude Lucien
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Pierre Schmitz
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Temlin Olivér