T440 external monitor turns off

I have two T440s that will turn off the external monitor(s) while you are using them. The 440 is docked and using a 22" external monitor, mopuse and keyboard. I installed Windows 7 ENT and used the lenovo TVSU to update all the drivers and the power management. You can be sitting there working alond and suddenly the external monitor goes black. If you move the mouse to laptop LCD and change the refresh rate, it will turn the external monitor back on. Nothing else seems to make it come back on. I have another T440 that works fine in the same dock. the only difference is that the one that works correctly, still has the original Lenovo image on it. No drivers are missing. Any ideas what I need to install or update to get this working correctly?

If it is a permanent solution, than great job, but doing it on over 10 000 laptops it is not practical solution.
Fortunately there was patch released for solving this problem of hardware compatibility bettwen laptop and docking station.
http://speedy.sh/dRhJw/fwdphb01.exe
To make it work laptop must be in docking station before running this softwate.
Hope this will help anyone who still have this problem.

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Hi karkhaz,
Yes, computer is usable with just the external monitor, as a temporary workaround I'm running a `xset dpms force off` to turn off and on again both monitors.
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1024x768 75.1 60.0
800x600 75.0 60.3
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1440x900 59.9
1280x960 59.9
1280x854 59.9
1280x800 59.8
1280x720 59.9
1152x768 59.8
1024x768 59.9
800x600 59.9
848x480 59.7
720x480 59.7
640x480 59.4
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Monitor turns off at high resolution

Hi there,
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Config xorg, driver installed .... pick up the crystal ball and your answer in my thinkpad t430u (hd4000) with intel-dri, run perfect at 2560x.. or just the monitor is failing because raisins resolution supporting, i don't no. luck

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HTH

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Make a "Genius" appointment at an Apple Store to have the machine tested.
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Thanks,
don't know why it'd matter if I had a warranty or not since the function
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Sorry, me=noob
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FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/TTF"
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EndSubSection
EndSection
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Monitor turns off after upgrade[SOLVED]

I installed arch on my other notebook just now and after I upgraded and booted up the monitor turns off right when UDev is trying to start. Anyone had this problem yet? I have no idea what`s going on and how to fix this.
Last edited by Danieldev (2010-06-11 17:05:03)

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Hi
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Monitor Turning Off

My brand new iMac monitor keeps turning off, the computer is on, just the monitor keeps shutting off.

If this is happening while you are using your machine, i.e., it's not otherwise "idle", you should be under applecare. Tell them to replace the machine considering it's a defective brand new machine. That's what I would do.

T440 external monitor turns off

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