Compability issue ?

[AkisJ]

Good evening.
I have this graphic card ASUS HD7850-DC2-2GD5-V2 connected through HDMI with an LG DM2752D monitor.The problem is i cant put my monitor to sleep when the time limit passes it goes off and on continuesly.Sometimes also randomly screen goes black for 2 secs and then on its like loosing signal or something.My previous motherboard was an ASUS Formula Special Edition i really thought it was the motherboard cause i had it for like 6 years so i bought an ASROCK Z77 Fatal1ty Performance and it keeps doing it.I took my brothers monitor a PHILIPS 247E3LPHSU and it stopped.I putted my monitor to my brothers pc (he got a ASUS HD6670-2GD3 video card) and everything was working perfect.So i know its not the monitor or my video card.Any ideas?

Thank you.

[B0UJI]

What driver are you on? I know the 12.11 beta's (and thus the 13.1 WHQL) would do that for me. If the PC went to sleep it would never wake back up....

[AkisJ]

Thank you for your answer.

Im on 13.1 WHQL driver.PC can normally sleep monitor cant it just goes on/off all the time.
oh i forgot to tell im using windows 8 x64.

[B0UJI]

Does anything come up on the screen when it does? Or does it power flicker quick? Do you have any of the bloatware installed like AI Suite?

[AkisJ]

Nope nothing.Im using an ASRock fatality performance motherboard right now but this was happening with my Asus Maximus formula too btw my psu is a PPC 750w Silencer think its more than capable to hold a 7850 card.

[HiVizMan]

I have the same issue with that monitor. I have to physically power it down.

[AkisJ]

Do you get the quick power flicker too hivizman?

[HiVizMan]

Nope I only have the will not power down thing.

I think that the black power flicker is either a driver issue or your cable is not perfectly connected to the monitor or VGA. Or even a cable that is faulty. Some of the cables I tested had a live pinout that should have been floating. This can cause a monitor to think it is on even when no signal is being sent. So borrow a mates and see what happens.

Did not fix my screen however.

Like the monitor but it was a pain in the butt this issue. Ended up sticking it in the office upstairs for use with the wife's laptop. The minute I changed monitor no more problem.

[AkisJ]

The funny thing is when i plug it on my brothers pc it works perfect.Changed 2 cables so far one 1.4 and one 1.4a The 1.4a though got a fat connector and hits on case slot.

[HiVizMan]

So I guess that leaves you with the pain of driver issue to manage.