Mac Pro sometimes displays static after displays wake up from sleep

OK, just let the machine do the OS X 10.6.3 update.

The machine booted up with BOTH displays. That is different, and a positive change.

Wake from sleep wasn't as successful. Both displays awoke with static. I've tried this a few times with the same results.

Another positive change is this: When there is static on the monitors, a single power cycle seems to bring them back to life. This is different than the 1 to 6 or more times I would have to cycle the power before I could get them back.

OK, bring on 10.6.4! Perhaps this will fix the issue once and for all... Just as I'm ready to upgrade to the newest Mac Pro, or whatever. 🙂

Message was edited by: Scott Thomas3

I spoke too soon. A second reboot took me right back to square-one. Primary display comes up ok, and the second is static. sigh

Message was edited by: Scott Thomas3

I suppose it's just a coincidence that 10.6.4 was released on the very day I returned to my complaint.

10.6.4 seems to have fixed my issues. Rather than see snow, constantly, I now see the snow, then the machine seems to do the proper handshaking and clears up the snow.

Only took one year. Glad this wasn't a production machine.

Just got a new mac mini and am seeing this. So far 3 out of the 4 times I tried to wake it from sleep this has happened. 10.6.4 DVI connected via mini displayport adapter.

I have a 27" iMac with the i7 processor and I have an attached 20" Acer monitor connected by a DVI to Mini DisplayPort adaptor. I did not have this issue while using a borrowed VGA to Mini DisplayPort adaptor. The rainbow static only occurs on the Acer monitor. I previously had the Acer monitor connected to my Mac Mini through a DVI cable so I know the DVI port on the monitor is functional.

Add me to the list. I have a slightly older Samsung monitor which was connected through the DVI port on an older MacBook Pro for years and worked flawlessly. I recently purchased a Mac Mini server and now I am also getting snow about 50% of the time when the display wakes from sleep. I am using the HDMI to DVI adapter which came with the Mini.

I am still having this issue, but I have not upgraded to 10.6.4 (I am still at 10.6.3), I will try upgradeing and see if this goes away for me as well.

I am seeing the same behavior after updating to 10.6.4. The snow still appears each time I wake the display, but it now goes away on its own after a few seconds...

Mac Pro with 3 Samsung monitors hooked up to 3 seperate GeForce GT 120 cards.
Static on only 1 of the 3 monitors when waking from sleep.
Annoying as **** 🙂

Same issue for me with ATI card. Computer works fine, the display goes to sleep, I move the mouse to "wake" it, and I get the static noise. If I power off the monitor and back on, it works again, but I can't do that since I have an external drive connected to the monitor. If I leave the static on the screen for a few minutes, it resolves itself and the computer works fine again.

I have a Dell 2307 connected via DVI to my Mac Pro.

I have a new 6-core and a 23" Samsung monitor hooked up via DVI. I get white snow/static when the MP goes to sleep. If I turn the monitor on and off again the screen comes back.

My question is, does this happen with the 27" ACD? I have one on order and plan on taking back this Samsung. Has anyone got in touch with Apple regarding this issue? What have they said? Will a solution be a firmware update?

Add me to the list too. i only get it on my sony tv which i use to watch tv from my mac on. with that i have an underscan slider in the system prefs and messing about with that or changing the resolution usually sorts it out.

Same issue here.
My macbook pro is connected vai the mini display port to DVI to Dell monitor. Dell swapped the monitor and still get the colour static after waking from sleep.

Ok same here, here's what I found. To be honest I thought it was a problem with my monitor as my 23" sync master would always do it, but my 22" Soyo would not. Today I got a new 23" HP monitor and it happens as well on both at the same time. I have an Nvidia 8800GT on my computer and both monitors are connected via DVI. This only happens when I boot to SL. If I force my displays to sleep (ctrlshifteject) and wait a few minutes I will get white snow (same if i let it turn itself off). If i force them to go black and quickly wake them I never get static. When experiencing static If i change inputs on the monitors or turn them off and on the static will go away, not the end of the world, just really annoying.

Hi!

I have a Mac pro mid 2010 (12 core, 16gb Ram, Snow leopard 10.6.4, Ati HD 5870).
2x Dell Wfp2408 Ultrasharp.

I tried to connect both but static noise appear in the monitor that need conversion from Apple minidisplay port. I had tried with single link Dvi cable + dual Link DVI to Apple Mini DisplayPort official adapter, but i had static noise. I was thinking that maybe with a Dual Link DVI cable i could solve this problem, so i got a Dual dvi cable + dual link DVI to Apple mini display port official adapter and...... the same problem, static noise appear..... i thought that maybe could be a problem with Dell revision of monitor i have one monitor older than other and I thought change its conections and...... static noise appear on the other monitor!!!.... later i thought that something with conversion from DVI to minidisplay port are wrong... 100€ for apple dual link Dvi to minidisplay port and dont work!!!

Dell display have a display port input... and Ati minidisplay port output.... well i thought that a Display port cable to minidisplay port cable could work, so i had bought this http://estore.circuitassembly.com/products/Mini-Displayport-to-Displayport-Adapt er-Cable.html and VOILA! no more static noise!!! problem SOLVED!

There are people with expensive apple dual link dvi to minidisplay port converter had connected a dvi display without static noise problems?

Last thing i have a Macbook pro mid 2009 and a samsung display (Syncmaster 245e) and with apple simple adapter from minidisplay port to dvi i had had same issues

something with minidisplay port to dvi are not standard from apple. Not work.

Message was edited by: edenexposito

I did not have this issue with the 2600HD but I upgraded to a 5770 and now I get the static and I seem to have fixed mine. So my main screen would show white noise every time I came out of sleep mode. I did not have a screen saver just the power saving sleep after 10mins. So I turned on my screen saver at 10mins and power saver at 15 mins and the static has not occurred since(5 sleep cycles).