Sidebar Sidebar
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Beware: 10.11.2, Mac Pro 2013 will not wake up 4k Displays

ixxx69 said:
It doesn't happen every time - actually kind of weird because the last two mornings in a row, they woke up without incident, but the last two evenings in a row (upon returning from the office), they wouldn't wake up.

Unplugging one of them from the TB port and plugging it into a different TB port appears to force them to wakeup.
Click to expand...

It's the same way that it used to be with the old wake-from-sleep problems we had with 4K monitors in 2014. It depended on how long it was since it had been asleep and how deeply (not a very precise technical term, I know) the Mac had gone to sleep.

Very frustrating. This was the sort of thing that those of us who had jumped onto 4K monitors were seeing last year but all these issues disappeared for the most part with this year's OS X releases. It appears Apple isn't doing any regression testing when it comes to hardware compatibility.

It also appears that the unplugging trick only works once per TB port between restarts.
 
edanuff said:
It's the same way that it used to be with the old wake-from-sleep problems we had with 4K monitors in 2014. It depended on how long it was since it had been asleep and how deeply (not a very precise technical term, I know) the Mac had gone to sleep.

Very frustrating. This was the sort of thing that those of us who had jumped onto 4K monitors were seeing last year but all these issues disappeared for the most part with this year's OS X releases. It appears Apple isn't doing any regression testing when it comes to hardware compatibility.

It also appears that the unplugging trick only works once per TB port between restarts.
Click to expand...
Just to be clear, this is different from the P2x15Q issues where the displays won't wake from sleep and you have to physically power them off at the outlet (which is still an issue on El Capitan).

I did notice that the unplugging trick didn't work as well the second time (between restarts), but I just kept switching cables and turning on/off the displays and hitting the keys on my keyboard until it woke. I might revert back to 11.1, but in the meantime, I'm now using my MB to screen share into the MP to save any work and then restart... it's actually faster than messing with cables every time.

Don't even get me started on how ****** Apple has gotten on the software front.
 
ixxx69 said:
Just to be clear, this is different from the P2x15Q issues where the displays won't wake from sleep and you have to physically power them off at the outlet (which is still an issue on El Capitan).
Click to expand...

Yes, that issue still remains, it's purely a Dell issue, although interestingly, in the one year since I've had these monitors, that particular problem has become less and less frequent. I have my monitors plugged into a separate power strip so I can completely power cycle them what that happens, and I haven't had to do that in quite a while.

ixxx69 said:
Don't even get me started on how ****** Apple has gotten on the software front.
Click to expand...

:mad::apple:
 
edanuff said:
Yes, that issue still remains, it's purely a Dell issue, although interestingly, in the one year since I've had these monitors, that particular problem has become less and less frequent.
Click to expand...

Same here. Worrying thoughts of dry joints or bad/cheap caps have gone through my mind.

I just made the mistake of installing El Capitan 10.11.2 and now my Dell P2715Q never wakes from sleep. I've had to drag an old 1080p display out to get anything to appear on screen. The only way to wake up the Dell is to use the 1080p monitor to switch Display Mirroring on/off.

This is on a 4,1>5,1 with a Sapphire 7950. Seems to be a problem with the mDP output.
 
I've got the P2715Q and I've found to wake it from sleep since the update I have to remove the power lead from the monitor and plug it back in again.
 
ixxx69 said:
Just to be clear, this is different from the P2x15Q issues where the displays won't wake from sleep and you have to physically power them off at the outlet (which is still an issue on El Capitan).
.
Click to expand...

This is only an issue on the older revisions of the P2x15q monitors, as far as I understand it. I am running Yosemite with the latest P2715Q (Rev03, iirc) and I don't have any wake from sleep issues at all.
 
  • Like
Reactions: ixxx69
theSeb said:
This is only an issue on the older revisions of the P2x15q monitors, as far as I understand it. I am running Yosemite with the latest P2715Q (Rev03, iirc) and I don't have any wake from sleep issues at all.
Click to expand...
Good to know! I hadn't been keeping up on the revisions.

Whether by smarts of waiting or good timing, you're fortunate not to have to deal with that issue. I did the same thing as Edanuff with the power strip... it probably averages once a week for me, but every time it happens, it's hard not to grit my teeth a little.

Well, I guess these days, that sort of thing is just to be expected from electronics makers. Release a "beta" version, let users bug test it, and then leave them holding the bag, err monitor, when they release a revision that fixes the problems.
 
ixxx69 said:
Good to know! I hadn't been keeping up on the revisions.

Whether by smarts of waiting or good timing, you're fortunate not to have to deal with that issue. I did the same thing as Edanuff with the power strip... it probably averages once a week for me, but every time it happens, it's hard not to grit my teeth a little.

Well, I guess these days, that sort of thing is just to be expected from electronics makers. Release a "beta" version, let users bug test it, and then leave them holding the bag, err monitor, when they release a revision that fixes the problems.
Click to expand...
Indeed, it is a real problem. I bought mine about a month ago after reading that people were not experiencing the wake from sleep with the latest revision over on the accessories sub-forum. I was holding thumbs that it would be the latest and not some old stock. It really sucks for the early adapters, like yourself, though.

I am almost tempted to upgrade the nMP to El Capitan for scientific reasons to check if the issue exists, but I cannot really afford the time to play around right now. Maybe when things quiet down during the xmas break.
 
I wasn't having wake from sleep issues with my two 2715Q's and nMP (D700's), but indeed, with the latest OS X update (10.11.2), the issue reared it's ugly head. This is extremely frustrating.

I also am having issues with my Apogee Duet USB soundcard. It plays for a few minutes at a time, driver kicks out, kicks back in...

I recently formatted my machine and did a clean El Capitan install. I wasn't having these issues until the recent upgrade, and now boom, my system is not usable.

El Capitan has provided no benefit for me what-so-ever and is nothing but a huge pile of grief.
 
  • Like
Reactions: BarredOwl
I actually swapped the 31MU97-B with a 31MU97Z-B (thunderbolt version) and I didn't have the issue using a miniDP to DP OEM cable on the first screen, now I'm still using the same cable (waiting for a thunderbolt one to arrive) and it IS having the issue on a new one.

I'm hoping it's resolved with a tb cable and will update here if it does.

Here's to .3 :).
 
I'm having the same issue here. I can reliably get one of my 4K displays to light up, but the other one is usually black. Occasionally both will turn on, and sometimes if the displays go to sleep they won't wake up.

Has anyone tried the 10.11.3 beta yet to see if it fixes this issue?
 
I have the same issue on my MacPro 2013 with two Dell 4k monitors.

However, I'm able to wake it by tapping on the power button on the Mac. I have to press it for about 1-2 solid seconds, not a light tap, and obviously not long enough to restart it.

Sucks, but that's how I've dealt with it.
 
mikepj said:
I'm having the same issue here. I can reliably get one of my 4K displays to light up, but the other one is usually black. Occasionally both will turn on, and sometimes if the displays go to sleep they won't wake up.

Has anyone tried the 10.11.3 beta yet to see if it fixes this issue?
Click to expand...

I asked in that thread and people have reported the problem is more severe.

I swapped out my display to one that uses thunderbolt instead and it seems I have the issue when I try to wake the system with a mouse click (a USB connected Razer DeathAdder), however, when I double tap the space bar (on the new Apple keyboard with the lightning port) it seems to wake up fine. This is with the system sleeping though and not just the display set to sleep, I'll have to try and catch it and see if it's the same.
 
I just got the P2715Q. I had the same sleep issue. I read somewhere turning off the "DDC/CI" on the monitor will fix it. It seems to be working so far. I haven't read up on what DCC/CI actually do. :)
 
Einz said:
I just got the P2715Q. I had the same sleep issue. I read somewhere turning off the "DDC/CI" on the monitor will fix it. It seems to be working so far. I haven't read up on what DCC/CI actually do. :)
Click to expand...

Thanks, I think this might have fixed it for me. I'll have to try it over the next few days to see if it continues to work.
 
Spoke too soon. Disabling DCC/CI improved things a little (actually letting me use both monitors a couple of times), but it's still the luck of the draw when waking up from display sleep.

So frustrating.
 
Same issue. Workaround I have been using:
Set "display off after" to Never.
Check "Prevent computer from sleeping automatically when the display is off"
Screen saver start after a minute (to lock my computer when I'm away)
 
mikepj said:
Spoke too soon. Disabling DCC/CI improved things a little (actually letting me use both monitors a couple of times), but it's still the luck of the draw when waking up from display sleep.

So frustrating.
Click to expand...

It didn't worked 100% for me either. But, it does wake most of the time.
 
I'm pretty fed up with these 4k displays on my NMP. :( I've given up and gone back to my two Apple displays which work perfect every time.
 
  • Like
Reactions: ixxx69
From the release notes, it looks like this issue is fixed in 10.11.3. I just installed the update so I'm anxious to see if it's really resolved.
 
You must log in or register to reply here.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.
Top Bottom
Back