Mac Mini 2011 Display Sleep problem

[Scrobz]

I just bought the newly released mac mini. Its connected to my hd-ready television with a mini-displayport to vga dongle to the thunderbolt port. When OS X Lion prompts the display sleep, the screen won't come back again. Not even after pushing a key, or clicking the mouse/trackpad. I contacted Apple and they tried to isolate the problem. When the tv is connected to my macbook pro with the same dongle and also with lion installed there is no problem. They therefor suggested to reinstall lion on a separate partition. This didn't work because the recovery partition is on the same HD as the one they wanted to partition, therefor unable to unmount. They then suggested to use a Snow Leopard install dvd to see if the problem would occur in SL, this isn't possible because there is nog optical drive. I am beginning to lose faith in the Apple helpdesk and am wondering if there are people in the community who have smart suggestions or have similar problems.

Thanks in advance.

 

[ansel1]

Possibly the same issue...

Mac mini 2011, connecting to a Dell U2410 with a displayport cable. After the display goes to sleep, I sometimes can't wake it up. I click the trackpad, see the monitor go from sleep mode to on, but then go right back to sleep mode.

I can keep repeating this for a random number of times. At some point, it finally does decide to wake up and show me the login prompt.

I switched back to using the HDMI->DVI adapter and the problem went away.