Currently Being ModeratedAug 16, 2011 2:54 PM (in response to ptaylor874)
By the way - I previously was using the Atlona adapter (before Sunday), so I was connected via HDMI -> DVI adapter (included with the mini) -> Atlona adapter -> 24" ACD, but I returned it to Amazon today.
I returned it because:
1. It took about 8-10 seconds to "wake" from sleep, whereas my 20" ACD woke up instantly
2. Sometimes it didn't wake up from sleep without pressing the "Reset" button on the Atlona adapter
3. The other night it did some wierd stuff (giving me "snow" like on an old Analog TV)... I think I had to hit the Reset button a few times before that cleared up.
I didn't want to be stuck with that adapter if it was going to keep getting worse, especially since it would go into a drawer (or on ebay) once Apple gets this firmware fix out... (Assuming it ever makes it out) Had it worked without these side effects (especially #3), I would have probably been okay with keeping it.
Currently Being ModeratedAug 16, 2011 3:01 PM (in response to Drew5red)
I haven't taken my display in. I don't have AppleCare on it. Everyone I've talked to at Apple wants to point to the mini as the problem. I'm still trying to work with them, but they aren't quick to call me back...
As a side note, so far my display has just screen blanked that one time right after the system booted... Normally, I would have expected another blank by now, but it's been good for about 15 minutes... Not that this is unheard of with my system or anything, I just expected another blank by now...
Currently Being ModeratedAug 16, 2011 5:14 PM (in response to DanRyb)
There is an update now that specifically lists the flicker as one of the resolved matters. Use update in Mac OSX to get it and reply with your results. I don't have the flicker problem so I can't confirm it's fixture.
Currently Being ModeratedAug 17, 2011 5:49 PM (in response to Hey Ryan)
Today, my screen blanking issue was worse than it's ever been before, blanking out as often as 3 to 5 times in one minute (maybe more!) until after about 30 minutes, it just went totally black as I was using it. I unplugged it from the Thunderbolt port on my mini, then plugged it back in... Nothing. I attached the HDMI to DVI adapter up (which is connected to a 20" ACD) and it came up fine. I rebooted with both attached and got nothing on the 24. I went to unplug it and noticed that the mini-DP connector seemed loose. I pushed it in again, then pulled slightly on it and it still seemed loose. I think I wiggled the connector a bit and pressed a bit harder and it went in more so that the back of the Mini-DP connector was flush with the back of the Apple HDMI adapter (and the Apple USB connectors - man they are anal about design!).
Anyhow, my video came back up when I got the connector in flush. I've been using it off and on a bit since then, but I've had no screen blanks since. I've probably only used it for about an hour total since then, but it's been perfect... No strange video artifacts, etc.
Could it really be so simple as a connector that doesn't quite make a good connection?
Before you think that I'm someone who doesn't know what he's doing, I built Windows machines for my friends and family since around the time of Windows 95, and I work with computer hardware all the time in my day job. If this is the problem and I can miss it, I'm sure that lots of others can too.
Can others with this flicker and a Mini check theirs out and see if this is perhaps the real issue that we've been having? Take the HDMI to DVI adapter that came with your mini and plug it in next to your Mini-DP connector from your 24" display. The back of the two connectors should be even with each other.
Currently Being ModeratedAug 17, 2011 6:13 PM (in response to ptaylor874)
Perhaps it was wishful thinking... I've still not seen any screen blanks, but I did just have a slight horizontal shift that happened, so I don't think the connection issue is my only issue. Still waiting for a screen blank.
Currently Being ModeratedAug 17, 2011 8:12 PM (in response to ptaylor874)
Ok, it's definately not just a connectivity issue. It seems better than it was when I got home this evening and compared to how it has been the last few nights, but I've experienced at least one more screen blank in the last hour, and several horizontal video shifts in the lower portion of the display.
Currently Being ModeratedAug 20, 2011 12:47 AM (in response to DanRyb)
Sigh. It's been half a year now. How good are chances for an update after such an extended period…
To everyone posting: all too often since the beginning of this thread have I read about people saying it's not just limited to 24 inch ACD's connected to Thunderbolt Macs. That it's been going on for a couple of years or have you. Let me respond: my ACD worked FLAWLESSLY with my OLD MBP (pre 2011 Thunderbolt), and now with THUNDERBOLT, I get FLICKERING and BLACKOUTS on a DAILY or HOURLY basis.
Really hoping for an official stance from Apple.
Currently Being ModeratedAug 20, 2011 7:05 PM (in response to DanRyb)
Currently Being ModeratedAug 21, 2011 1:59 PM (in response to Marc Buhmann)
In addition to the screen blanking issue and a problem with a momentary horizontal shift, I get a scrambled screen from time to time. It's really wierd. Sometimes it's around for only a few seconds, but earlier today it was like this for more than a minute, long enough for me to take a video and move a safari window around to show that it was live and not photoshopped. In fact, today to remedy this I had to unplug and replug the Mini-DP connector at my Mac Mini. Anyone else have this symptom?
I've uploaded the video to YouTube here: http://www.youtube.com/watch?v=KgB0JF12SsY
Currently Being ModeratedAug 21, 2011 2:29 PM (in response to ptaylor874)
Had the same problem today and made a picture, see http://img821.imageshack.us/img821/9144/tyling.jpg
Only unplugging the 24" ACD screen from my Imac fixes the problem.
It looks like a freeze but like you can see on ptaylor's video, you can still move around objects.
In my case this happens once every 5 - 10 days.
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