External video display switching

I thought I had sent a mesage to this forum, but it failed to show up. If a duplicate, I apologize.
I have an old X61s running Debian Sid and now want to use it to drive an external projector. However, the Fn+F7 key combination does not cycle between external display, internal display, combination. The internal thinkpad display remains all the time. I assume that without any external device connected, the key combination should cycle through the options. Am I correct? Am I doing something wrong? If not, can I troubleshooft?

Hi Haines,
Welcome to Lenovo Community!
I request you to install Lenovo power manager application and check with Fn+F7 key, this will enable the function key feature. You can switch between the monitors by pressing Windows+P keys, but you should have installed the graphic driver to work with this option.
Below is the link to enter the downloads page and install Wifi driver and check accordingly, please click on "Select Product" then in "QUICK PATH" enter the MTM no. select the exact model.
http://support.lenovo.com/en_US/downloads/default.page#
Hope this helps. Do post back if issue persists!
Best regards,
Hemanth Kumar
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I just wanted to share my video display problem. Mine is a tx2-1375dx. When is turned ON cold, it shows rubbish, like the sequence shown next. The problem persists using an external video display or projector.
Then, instead, I warm up the back of the display with a hair dryer, not too much, but that feel the heat has transfered inside, the Tx2 runs just fine. I also keep a fan cooling pad underneath instead of having the inner fan run 24x7.
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hallo, i have a question conserning external video capabilities...
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I'm having the same trouble. Actually, my Macbook detects the monitor but no signal is reaching it. I am using a DVI-A cable from what I can tell. There appears to be a DVI-D or DVI-2 type cable available as well.
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Shadow30 wrote:
Can I connect an external video camera to a mac book pro for viewing live video so I don't have to use the little screen on the camera?
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Message was edited by: EZ Jim
Mac OSX 10.9.4

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