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3 Posts

04-07-2015

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W540 + ultra dock - LAN and display issue upon re-docking

2015-04-07, 1:59 AM

I am using a Lenovo ultra dock with a W540 notebook. Ubuntu 14.04 with Unity window manager.

I have one external monitor and am connected to the wired LAN through the dock. When I undock the notebook and dock it back, two things happen:

(1) The LAN stops working and does not reconnect at all.

(2) The external monitor resolution drops and I cannot reset the resolution to true monitor resolution of 1920x1080. The highest resolution that is available in display settings is 1024x768.

Everything works fine when I reboot the machine. It is frsutrating to have to reboot everytime the machine is undocked and docked.

Has anyone else seen this issue, and knows a solution?

Thanks,

MN

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9644 Posts

12-27-2009

CA

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Re: W540 + ultra dock - LAN and display issue upon re-docking

2015-04-07, 15:59 PM
Does the same action work properly in Windows if you happen to still have a Windows install?

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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3 Posts

04-07-2015

CA

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  • Posts: 3
  • Registered: ‎04-07-2015
  • Location: CA
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Re: W540 + ultra dock - LAN and display issue upon re-docking

2015-04-07, 16:34 PM

Thanks for the reply. No, I dont have a windows install and cannot verify it.

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