X230 UltraBase 3 has no video on Displayport monitor after sleep

I am having a strange issue with my X230 when docked in the UltraBase 3. This seems to have started in the last month so I suspect either recent BIOS or driver issue.
Displayport video output sometimes fails to go to my external montior (Samsung S22A460 via Displayport to DVI adapter)
If I turn on the X230 and immediately log on, the external monitor works great. But if I turn on the machine, walk away for a few minutes and then come back to actually Ctrl-Alt-Del and log on, the external monitor gets no signals.
I can log on to the X230 and it works fine with its own display. Undocking and re-docking does not start the external monitor. Restarting the X230 in the dock does not fix it. Full shut down followed by power up will get the X230 to detect the external monitor again.
If the machine + monitor combo starts and works it keeps working. The machine can go to power save mode and dim or turn off the monitors. Both the internal and external will come back on after waking the machine.
If the external monitor fails to get output at first startup, the only way to get it working is full shutdown and power up.
.NET Software Developer
ThinkPad T440s (20AQ005TUS) | ThinkPad ThinkPad T430 (2342CTO) | Lenovo H430 (25582AU) | ThinkPad X230 (2306CTO)

If you just bought your mini, it's most likely an Intel-based one. There is no PMU on the Intel mini's and following the instructions to reset the PMU may cause harm. Instead this version of the mini uses a Systems Management Unit (SMU). The proper reset of the SMU can be found here: http://docs.info.apple.com/article.html?artnum=303446
However, I don't think resetting the SMU will help much here. Is it possible for you to substitute another monitor? If so, and it works, we would want to concentrate on the video settings for your Samsung.
Your mini is capable of supporting the following maximum resolutions:
- DVI video output to support digital resolutions up to 1920 by 1200 pixels; supports coherent digital displays up to 154MHz; supports noncoherent digital displays up to 135MHz
- VGA video output to support analog resolutions up to 1920 by 1080 pixels.
For DVI your mini should easily support the max. resolution of the Samsung (1600 x 1200). Not so for Analog.
Also make sure you have the proper DVI cable. You can use either a DVI-D or DVI-I cable. Single link will support resolutions up to 1920 x 1080, while dual-link will support resolutions up to 2048 x 1536.

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Brand new home built system (all new components unless noted otherwise) running Windows 7 64-bit Home Premium on the following hardware:
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cable from the card results in the Windows sound indicating a change. Plugging it back in, results in a Windows sound indicating the change. This happens when you unplug one end of the cable, it doesn't matter if it is at the monitor end or the video card
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OK, I finally got around to trying this. I still have to check if that actually fixed it, but I managed to get into the "Factory" OSD screen.
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5. I pressed #2 again to accept and it was done.
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Additional informtion: in the top of the "Factory" menu it reads: "LOVP AU Ver.0.36"
I took photos of everything and will post them on my Flickr account. To find them go to wwww.flickr.com, click on the search button, then on the next screen click on the People tab, enter my name and click search.
Thanks again for the advice.
Tom

X230 UltraBase 3 has no video on Displayport monitor after sleep

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