07-25-2012 01:16 AM
I use a Lenovo TP X1 (Type 12942NG)
After a crash I setup the laptop with a original MS Windows 7 Pro CD. I can't recover from a Lenovo Recover DVD.
I use the Lenovo System Upgrade Tool to install all drivers etc.
But the displayport with the VGA adapter doesn't work.
It's not a hardware problem. When I boot linux the VGA adapter works.
When I connect to a external monitor or beamer the system detects that.
When I use the function "clone display" the buildin display reduce the resol. but no signal to external display.
When I use the function "extend display" the buildin display is dark (but active !) an also no signal to external display.
I read also the blog how-to connect an external display. there is mention to use the "Extended Settings" Link after select the external monitor but in my case this Link isn't active.
Any hints for this problem ?
07-26-2012 08:38 AM - edited 07-26-2012 09:12 AM
You may want to download/update: Monitor file for Windows 7 (Thinkpad)
The reason I say that is because the readme it states, "If you use the preload environment, you do not need this package. This package is required when you install Windows OS without the preload image."
Since you setup the Thinkpad with Windows 7 Pro CD and no longer have the preload image, this may fix the problem.
Also, have you checked the website for the displayport manufacturer? They may have updated drivers there that wouldn't have been on the update tool you used.
*Edit* You can also check the: External monitors issues section here. It goes over some basic troubleshooting you may want to try first (I just came across it now)
Let us know how it turns out!
07-26-2012 01:20 PM - last edited on 07-26-2012 02:42 PM by andyP
How I find out which displayport manufacturer is build in the X1 ?
When I turn to extended display mode, the harddisk will active for about 20 sec.
Can I activate more logs ? I doesn't find something in the eventlog atm.
Moderator note; picture(s) totalling >50K converted to link(s) Forum Rules
07-26-2012 02:23 PM
I'm sorry, what I meant to say was VGA manufacturer not displayport manufacturer, but I'm assuming it's the Lenovo Mini-DisplayPort to VGA Adapter . Did the VGA adapter work prior to the crash? It's puzzling, especially the part when you extend the display and the Thinkpad monitor is visable but dark. I'm going to do a little more research and see if I can find out if I can find a similar problem.
07-26-2012 02:42 PM
07-27-2012 10:21 AM
I would uninstall your video drivers in device manager and reinstall them from here: Drivers and software - ThinkPad X1
I would also uninstall and reinstall the hotkey features drivers also on that page. These are the most updated drivers for the X1 and may resolve the issue. Even if you're not using the hotkeys, the drivers may be causing a conflict with the video.
Let me know how it turns out!
07-31-2012 09:44 AM
Thanks for your Patience with working with us in trying to help you figure out your problem. What I gather from your what RedEd12 and you have done and from your first post is this:
It's not a hardware issue as it works with another OS which leads me to believe that it is a driver issue. Can you post the version of Graphics drivers you have? I would also have to ask if you have updated all the Win 7 updates too.
08-02-2012 12:25 AM
Yes it's not a HW problem.
I install all Windows updates.
Below a Lenovo driver overview of the system.