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Old 07-08-2013, 01:11 PM   #1
tatham
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Join Date: Jul 2013
Posts: 3
Default Windows 8.1 on Lenovo Helix with DisplayLink 7.4.48853.0 not recgonising monitors

Hi,

I'm running:
  • Lenovo Helix
  • Lenovo ThinkPad USB 3.0 Dock
  • DVI monitor
  • DisplayLink 7.4.48853.0
  • Windows 8.1 Preview

The DisplayLink adapater shows in Device Manager as expected, but the system does not recognise the external monitor at all.

I've attached the log.
Attached Files
File Type: zip PYRAMID_20130708_215223.zip (525.8 KB, 1054 views)
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Old 07-09-2013, 11:19 AM   #2
JamesH
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Join Date: Jan 2012
Posts: 1,523
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Hi,

Some questions:

Do you have another monitor / cable you can try?

Was this working on Windows 8?

Thanks,
James
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Old 07-10-2013, 01:33 AM   #3
tatham
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Join Date: Jul 2013
Posts: 3
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Hi James,

I know the monitor and DVI cable work. I've never tested the dock with Windows 8 (the dock came after 8.1).

It's now working ... but I'm a tad confused.

Here are my steps:
  • Plugged in dock
  • Installed Lenovo drivers (failed)
  • Uninstalled Lenovo drivers
  • Installed DisplayLink beta driver
  • Drivers installed cleanly, but monitor never detected
  • Rebooted multiple times, still no luck
  • Gave up, went to work for a day (used machine there, no monitor), came home
  • Plugged dock in as USB hub (keyboard + mouse) but then connected monitor directly to Helix via VGA
  • At this point, the same monitor is physically connected Helix-dock-DisplayLink-DVI-monitor as well as Helix-VGA adaptor-VGA-monitor
  • Monitor lit up and I worked away
  • Noticed that my mouse was disappearing and screen alignment was wrong
  • Went to Screen Resolution control panel and saw three screens: built-in, and the external monitor twice
  • Disconnected VGA, monitor still worked (evidently DVI)

Is there anything useful for me to investigate now? Or just be happy that it's working?

Do you want another log, so maybe you can diff them?

(PS. Thanks for the beta drivers + these forums. Amazing support for hardware!)


-- Tatham

Last edited by tatham; 07-10-2013 at 02:31 AM.
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Old 10-18-2013, 07:04 AM   #4
wolfindersteppe
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Join Date: Oct 2013
Posts: 2
Default Helix + Windows 8.1 + Thinkpad USB 3.0 Dock performance?

Hi Tatham, apart from you conectivity issues, did you notice any performance Problems with your Helix? I run Helix i7/Windows 8 Pro and dock makes system unusable, mouse lags, CPU temp around 70°C/158°F.
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