External screen blank

[j_klein]

My external screen (2nd screen) worked fine until I disconnected it and than restarted my T60. After the boot finsihed, I reconfigured the setting for a 2nd screen, but it stays blank. I see that the mouse disappears so that the settings are ok. The screens is ok (tried with an other source). Running through the troubleshooting didn't help. When switching the screens with <FN> <F7> it stays also blank, while the video on my T60 screen disappears (which is normal behaviour)
Anyone could help me?

[claudeo]

It looks like your external screen is being detected but is not coming on. This could be due to a number of reasons. You might try to turn everything off and then on again. If that does not solve the problem you must take steps to isolate the problem. First you might want to try a different screen or monitor. If that works, then you know the problem is with the screen. Double-check the connections. If there is a reset option on the screen, you might try that. If the problem does not appear to be with the screen, select the Fn+F7 configuration with 2 screens, then right-click the screen on the laptop, choose Display Properties, Advanced button, and check the settings for both screens, focusing of course on the external monitor. The wrong type or model might have been detected, or one of the settings might be outside the parameters of what the screen can display. If the manufacturer of the screen has a driver for your OS (for Windows XP, the "driver" is often just something that installs the proper .inf file with configuration info for the screen), you might try to download and install that to make sure that the screen is recognized properly.

[j_klein]

It looks like your external screen is being detected but is not coming on.
External screen is not detected – message no signal input
This could be due to a number of reasons. You might try to turn everything off and then on again.
This doesn’t help
If that does not solve the problem you must take steps to isolate the problem. First you might want to try a different screen or monitor.
The monitor works fine, I tried with a different PC. The settings on both PCs (T60) are the same.
If that works, then you know the problem is with the screen.
Double-check the connections.
Connection are ok
If there is a reset option on the screen, you might try that.
Doesn’t work either
If the problem does not appear to be with the screen, select the Fn+F7 configuration with 2 screens, then right-click the screen on the laptop, choose Display Properties, Advanced button, and check the settings for both screens, focusing of course on the external monitor.
Starting from scratch with the external screen connected, leaves both screens blank. Hitting FN+F7 show th login on my laptop but on th external screen. Checking the display properties and adjusting them to extent to both didn’t work.The wrong type or model might have been detected, or one of the settings might be outside the parameters of what the screen can display.
When I started with my T60, the external screen worked fine. So I guess the settings, type, driver is ok.

Is there a way to disable the external screen other than display properties?

[shamrin]

Did you ever resolve this problem? I am having the same one now, was working fine, stopped. Is it something I did?

/sch

[j_klein]

I didn't manage to have the sidescreen working again. A colleague of mine had the same problem. Lenovo had to replace the motherboard on both laptops. After the replacement of the board everything was fine, so this confirmed that my configuration is ok.

/jk