Dual Displays - sleep delays

I had a dual disply setup (i7 iMac 27" + Dell 2408WFP) which worked great but I gave up and went back to just one after getting exremely frustrated with the long delays in the "wake up" period for the two.
The single display 27" iMac sceen wakes instantly when any key or trackpad is touched.
Dual disply - HUGE delay as an apparent communication relay bounces back and forth before the two came alive.
(Huge in this case a maybe ~3 - 5 seconds?)
I liked dual displays and would consider going back - just wondering if I was missing something or is this just "how it is" when implementing 2 screens?
Turning SLEEP or Screen Savers off is NOT an option.

SwitchResX
<http://www.madrau.com/srx_howtouseit/srx_howtouseit/srx_switchresx_menus.html>
can disable and enable displays.

Similar Messages

X1900 XT, dual display: sleep problems

Today I updated my Mac Pro from an NVIDIA 7300 GT with connected BenQ and Samsung displays to an ATI X1900 XT with two 23" Cinema HD Displays. Everything works fine except one thing:
When trying to put the system to sleep it wakes up again after 2 seconds and a few seconds later the fan goes to highest speed level and stays there. The only possibility to stop the system is to shut it down completely.
The keyboard/mouse are connected to the "first" display, no other USB or Firewire device is connected.
All OS X updates are installed including EFI Update 1.1
Any ideas how to locate the problem?
Thanks in advance,
Wolfgang

Sorry for the unprecise / wrong information. The problem could be solved by removing a USB smart card reader that was attached to the USB hub of the second display.
At the old display it worked fine but the combination Cinema display / Vivanco Smart Card reader produces a signal at the USB that wakes up the Mac Pro immediately. I do not have a clue why the Mac Pro speeds up the fans afterwards but this behavior can be reproduced easily with every USB device that is removed shortly after the Mac went to sleep.
The hint for this could be found in the system.log:
Apr 23 17:45:26 MacPro kernel[0]: System Sleep\
Apr 23 17:45:26 MacPro kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes\
Apr 23 17:45:26 MacPro kernel[0]: Started CPU 01\
Apr 23 17:45:26 MacPro kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes\
Apr 23 17:45:26 MacPro kernel[0]: Started CPU 02\
Apr 23 17:45:26 MacPro kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes\
Apr 23 17:45:26 MacPro kernel[0]: Started CPU 03\
Apr 23 17:45:26 MacPro kernel[0]: System Wake\
Apr 23 17:45:26 MacPro kernel[0]: USB caused wake event (EHCI)\

Display sleep with dual monitor setup

I'm running a 17" studio display and a 20" studio display as a two momitor setup on a dual G5 2.0. The menu bar is on the 17". Unless I have display sleep in energy saver set to never, the 17" will go to sleep at the interval set in the preference panel, even when the system is in use. So far the only way I've found to get the display back off sleep is to put the computer itself to sleep - keyboard shortcut or by using the power button on the 17" and then wake it up.
I think this only started with 10.4.6. I can't upgrade to 10.4.7 yet - I run Avid Xpress Pro on the system and 10.4.7 gives dongle trouble. I've thrown away preference files, set and reset the sleep parameters. As it happens, I've had to reinstall the system a couple of weeks back, but the 17" studio still goes to sleep when it shouldn't.
The problem doesn't occur if the menu bar is on the 20" cinema display, but that's not the way I want it.
Anyone with the same problem,, or better a suggested solution?

finally found the solution (apple i hope your reading
this as this is a mad bug!)
you need to have the dock on the bottom of the main
screen in order to view the image on that screen.
Wierd, I have my dock on the left side of my main screen... which is to the left of my secondary screen. Perhaps you cannot have the dock in-between screens?
kgelner, how have you noticed the performance of your
card when working with aperture? Im seriously
debating upgrading mine as its just slow and annoying
I find it usable but I'm also only working with TIFF files (my camera is not supported). I am also pretty strongly thinking about going with the X800xt card, which should be at least twice as fast. Some operations (like a lot of Spot & Patch repairs combined with Shadows/Highlights) do make things a bit laggy.
I also have the 256MB version of the 9800, which I think helps with some of the larger images and operations.

Dual Display Problems - No Signal After Sleep

So, I just set up my hexacore Mac Pro with stock ram and the ATi 5870. To go along with it, I purchased two Dell U2311H monitors from Dell so that I could finally have dual displays. I then purchased two 6' minidisplayport to displayport cables from Monoprice. Also went with the Apple wireless keyboard and Magic Mouse.
Upon initial start-up, everything worked fine. The monitors needed to be calibrated, but dual display mode worked perfectly without any extra steps. I had some fun messing around for a little bit and then decided to take a break. I put the computer to sleep.
I came back 15 minutes later (couldn't stay away for long), and clicked the mouse to wake the computer back up. I heard the tower humming, but the monitors stayed black. I tapped the keyboard. Still black. Assuming it was some issue I wasn't prepared for with the wireless peripherals, I futzed around with them for a while and had no luck. Still not image on the monitors. I turned the monitors off and then back on only to get an error message explaining that the monitor was in Power Save mode. Some further exploration revealed that the monitors were allegedly getting NO SIGNAL from the computer.
Restarting didn't help any. The only thing that has "worked" is shutting down the computer and connecting a single monitor through the DVI-D cable that came with it. I can then reconnect the displayport cable and switch the input to re-establish dual displays, but this is obviously pretty annoying. It seems like I can eliminate questions with the monitors themselves or the cables. In doing some research, I've found some threads on different sites about people having similar dual display issues attributed to faulty graphics cards. I certainly hope this isn't the case, but I'm at a loss for what the problem might be. It seems odd that dual displays would work briefly only to fail after going to sleep for 15 minutes.
Sorry if this is the dumbest question ever. Is there something stupid that I'm doing wrong? Anyone have any insight?
Any guidance you guys can provide would be greatly appreciated. Thanks in advance!

I have the exact same issue. Here's the forum I've got going: http://discussions.apple.com/thread.jspa?threadID=2686085&tstart=90
I called AppleCare because this issue was out of the box. Engineering wanted to capture some logger information so I ran the logger and sent it off to them.
I am running a Dell 27" via a DisplayPort to Mini-DisplayPort cable (also purchased through Monoprice) and a Dell 22" via DVI to DVI (have also tried with the DVI to DVI cable connected to an Apple DVI-MiniDisplayPort adapter and the same issue arrises). When I boot the computer with any of these cables, I get no video. Only when I boot with a Dual-Link DVI (DVI-D) cable from the 27" monitor do I get any video on screen. At this point, I can then plug in the DisplayPort to Mini-DisplayPort cable and the regular DVI (not Dual-Link) after unplugging the DVI-D cable and I get video. If I restart the computer, no problem. However, if the computer goes to sleep or if I power down and then power back up, I am back to square one with no video and have to resort to using the Dual-Link DVI cable.
Because this was DOA out of the box, they ended up just RMA'ing the machine and re-ordering my CTO Mac Pro 6-core. Still waiting for it to be built, I'll let you know how it goes on the second machine when it arrives.

Dual Display Energy Saver/One at a time

I'm interested to know if there is any way to enable the display sleep so that it effects a dual monitor setup individually, ie. one monitor is awake, while the other one goes to sleep.
Any ideas? I didn't see anything in the System Preferences that enables this. Perhaps an external app?
Thanks

Sorry, I know bumping is frowned upon, but I have yet to find a solution for this, and this thread disapearred into the obscurity of the double-gigit pages very, very quickly.

Display sleeps after 1-2 minutes running Windows 8.1

Both my MacBook Pro Retina 15-inch (Early 2013) and my wife/son's MacBook Pro 13-inch (Late 2011) are dual booted with Windows 8.1. Both have the same display issue; the display goes to sleep after approximately 1 to 2 minutes (1:20 to be precise). The issue didn't appear until the 2nd day after the install on my MacBook Pro Retina and it has been an ongoing issue for my wife on her 13-inch. Is it related to the 5.1.5621 or 5.1.5640 Boot Camp drivers? Can I remove those drivers and try to go back to the previously released set of drivers? That is when I notice the issue show on my MacBook but honestly there were so many updates through the process that this is just a guess. It's more of a nuisance than anything. After finding and installing Lubbos for the heating issue and TrackPad++ for the trackpad options I was hoping I could solve this as well. Has anyone heard of a fix for this? The only display/sleep issues I've been able to find are not similar to my issue, from what I've read anyways. Any assistance would be greatly appreciated.

I'm having the same problem and have been working with my company for a week trying to resolve this. We've tried the following:
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- Turning on/off wireless and connecting via Ethernet
- Turning on/off encryption
- Tried DigiTunnel VPN client
None of this seems to work.
I am able to connect fine via Windows installed on the same MacBook. It's just the MacOS side that disconnects.

Dual Display, 2 Monitors - Extended Desktop

Hello Everyone:
There isn't a clear cut answer or solution in connected a Macbook Air to 2 external monitors in an attempt to create an extended desktop. I have read older posts that it's either doable or not doable. My questions are the following:
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-Some users have reported lag issues (mouse dragging , delays, etc.). Will this happen for sure with a Macbook Air or is it a monitor issue?
-What's the best non-Apple monitor brand that would work best with a Macbook Air for dual display purposes? I've read that Dells have a problem in this regard.
-What would be the advantage or disadvantage of using a dock station in setting up a dual display environment? Would this add to the lag, latency factor?
I'm thinking of investing in a new Macbook Air, but I want to make sure I dont end up with silly issues - such as latency, monitors, etc.
Thank you for all your help and advise.
Best,
G.

Yes, extended desktop works with monitors set to differant resoultions. the Monitors pref pane allows you to select relative arrangements and rez of all monitors composing the extended desktop.
personally I run a dell CRT at 2304 X 1728 @ 60Hz along with an NEC 6FG a 2048 X 1280 @ 60Hz off a radeon 9800pro on an MDD.

Using iSight to stop display sleep

Hi
I want to use an old 20" iMac as a simple billboard behind a window, showing an iPhoto slideshow, without any user interactivity. That's the easy part.
However, since there won't people to look at the screen all the time, and there may in fact be continuous hours without any onlooker, I would like to turn off the display after some time, using the Energy Saving preferences. The trick is to turn it back on. Since there is no keyboard or mouse (slideshow folder will be updated via VNC or a scheduled script), the only conceivable input method would be the iSight. The trick is therefore to fool OS X into thinking that any motion detected by the iSight is a user interaction that delays or stop display sleep. I don't even want to take a picture when motion is detected.
I researched the various uses of the iSight, and many options are offered to use it as motion detector and security camera. I haven't found anything related to using it as motion detector to simply turn on the screen (or trigger other actions through Automator, for example).
Does anybody have an idea how it can be done?
Another idea would be to use a real motion detector and connect its contact to an old USB mouse button. Less elegant, but workable.
JL

The system does not have a proviso for a "modified half/clamshell mode". If you want the main display off, and the external display on, you will need to attach a keyboard to the computer, and close the display.

Leopard on MDD-Display sleeps but computer won't sleep or wake-Need Help!

I installed Leopard on a 2nd internal drive and made it the boot drive. (I kept my 10.4.11 on the original internal drive.) Everything seems to run fine, but the machine will not go to sleep as told to do in System Prefs. The display sleeps, but the computer continues to run. (fans are on) It will not wake from this state. I have to power down and power up to get things going again.
I also have the 'Repair Permissions' issue.. Bar says about one minute but just sits there.
It's a MDD dual 1 gig, with 1.5 gig. mem.
Can anyone help figure this one out?
John

I spent literally hours on the phone with Apple Support. We tried one thing after another with no success. We deleted com.apple files, one Pref. file after another, we unplugged one external device after another. It went on for about 4 hours or more. I finally couldn't stand it any more and we agreed to give up for the day.I did some more research on my own and heard rummers about PCI USB/Firewire cards sometimes causing problems. I had such a card installed. It was an old Orange Micro card. I removed the card and guess what.. Everything worked just fine. Why it worked with 10.4.11 and not 10.5.1, is beyond me, but there you have it. Oh yeah, I did also install the FULL download of the 10.5.1 upgrade. The Software Update version is a patch, the full download is much more.
Now I need to find a replacement PCI USB/Firewire card that runs with 10.5.1 Anyone have any suggestions?
John

Dual Display Problem with new MacBook Pro

Hi All,
I just got a new MacBook Pro Core 2 Duo and a 30" Dell LCD Monitor. Both are AWESOME products, BTW. But I am having a weird issue with running both displays.
If I sleep/wake the computer so that I'm never running with dual displays, everything seems fine. However, no matter what I try, I eventually get a system hang if both displays are active at once.
For example, if I turn the MBP off, attach the monitor, and power up, the MBP will get to the login screen. As soon as it hits the logon screen, it hangs.
If I hot-plug the monitor while the system is running, it will detect the new display and activate it as a secondary desktop. But, in anywhere from 5 seconds to 15 minutes (varies each time) the MBP display will turn off and the system hangs.
To me, it seems like a video driver bug or something similar to that?
Thanks!

To those of you that inquired, NO, I have not yet resolved this problem.
I took the laptop into the Apple store, and they decided that it needed a new logic board. Then, once they received the part, and I took the laptop in for repair, they didn't replace the logic board. The guy on the bench reset the PRAM and decided that the problem was resolved. I took it home, and within about 20 minutes the same thing happened.
When I took it back to the store, I was unable to reproduce the problem for the mac Genius.
It still does it, I I just haven't had a chance to take it back to the store to try to reproduce the problem again.

Wacom tablet on dual display dual card setup...

...and the cards are as follows, one Geforce GTX 460 (nvidia driver), one Radeon x1650 (radeon driver) As such, I have to use Xinerama and not RandR for my dual display setup. I have configured the driver to use my main display (Dell CRT on GTX 460) and the cursor shows up where it's supposed to, but when I draw, the cursor "splits" into two, the actual cursor, and the drawing cursor. The regular cursor moves as if it's on my main display, but the drawing cursor spans both desktops.
I've tried all kinds of things to make it work, no luck though.
xsetwacom set "Wacom Graphire4 6x8 stylus" Area 0 0 30408 12064
xsetwacom get "Wacom Graphire4 6x8 stylus" MapToOutput HEAD-0
Both of those commands produce the same result, which is shown in the video below.
xorg.conf
http://pastebin.com/d0TSwNrR
And a lovely video showing what I mean.
http://www.youtube.com/watch?v=YMGGehD81jM
Any help would be lovely.

MisterAnderson wrote:Honestly no clue how to help you, but I am interested in your setup. Are you using the proprietary drivers for your nvidia card and the opensource radeon for your ati? How did you get this setup working? I've been trying for ages!
If I remember correctly, I just used --nodeps and maybe --force when installing the nvidia driver, that way it didn't force me to uninstall the radeon driver when I install the nvidia driver. Then, look at my xorg.conf. there's no acceleration of any sort on the ati card, but I can use it for terminals and browser windows, text editors and the like. Can't watch flash videos on it though, and I don't think mplayer works on it either, I'm not at my arch box atm, so I can't verify that.
Also, as mentioned in my opening post, no composting either. The same setup works pretty good in Ubuntu with a similar config, but no compositing there either, Unity clones 1680x1050 of my main 2048x1536 display, can't split the desktops, and I just end up using Xfce4 because it handles Xinerma pretty well.. I have to turn off the compositing extension in the config on arch to get X to even start up.
:edit:
back in arch, should note that whenever I install a new package, I receive this warning. Everything still works tghough as I describes. And back on topic, anyone have any clue as to why my tablet behaves this way?
missing dependency for ati-dri : libgl=8.0.4
Last edited by RexMcLess (2012-10-02 19:58:03)

External display resolution changes after returning from display sleep

I often use an external display as a second screen with my Macbook Pro (OS X 10.8.2) However, when I return to the computer after the display has gone to sleep, the external display resolution changes when the display reappears. Then I have to go into System Preferences > Display and "Detect Displays" in order to return the external display to the proper resolution.
Does anybody know of a way for me to avoid having to do this every time my display sleeps?
Thank you,
Adam

I have the exact same problem.
I found the key combination ⌘ alt F2 also restores the proper resolution on both displays, however it's still a bit annoying

Highest dual display resolution for mac mini mid 2011

I am currently running a mac mini mid 2011. As I've understood (according to the below statement). Am I only able to use 2 secreen with 1920x1200 or could I use one screen with 2560x1600 and one with 1920x1200. I do NOT want mirroring, only dual displays.
I am going to connect the screens in the following way:
1x mini-dvi - HDMI to one screen.
1x HDMI - HDMI to the other screen.
Display Support:
Dual Displays
Resolution Support:
1920x1200*
Details:
*This model simultaneously supports 1920x1200 on an HDMI display or a DVI display using the included HDMI-to-DVI adapterand 2560x1600 on a Thunderbolt or Mini DisplayPort display or even a VGA display (with an optional Mini DisplayPort-to-VGA adapter, which is compatible with the Thunderbolt port).
2nd Display Support:
Dual/Mirroring*
2nd Max. Resolution:
2560x1600*
Details:
*This model simultaneously supports 1920x1200 on an HDMI or a DVI display (using the included HDMI-to-DVI adapter) and2560x1600 on a Thunderbolt or Mini DisplayPort display or even a VGA display (with an optional Mini DisplayPort-to-VGA adapter, which is compatible with the Thunderbolt port).
Thanks in advance
Rich

According to the copy&paste from wikipedia, HDMI should support higher resolution than 1920x1200. So the question is, does it aupport that on the mid 2011 mac mini. It says in the specifications
"Mac mini is designed to work with HDMI devices that comply with versions 1.0, 1.1, 1.2, 1.2a, 1.3, 1.3a, and 1.4 of the HDMI specification."
That should mean it should be able to support it, but I don't know : <
HDMI version
1.0
1.1
1.2
1.3
1.4
2.0
Date initially released
December 9, 2002
May 20, 2004
August 8, 2005
June 22, 2006
May 28, 2009
September 12, 2013
Maximum clock rate (MHz)
165
165
165
340
340[109]
600
Maximum TMDS throughput per channel (Gbit/s) including 8b/10b overhead
1.65
1.65
1.65
3.40
3.40
6
Maximum total TMDS throughput (Gbit/s) including 8b/10b overhead
4.95
4.95
4.95
10.2
10.2
18
Maximum throughput (Gbit/s) with 8b/10b overhead removed
3.96
3.96
3.96
8.16
8.16
14.4
Maximum audio throughput (Mbit/s)
36.86
36.86
36.86
36.86
36.86
Maximum color depth (bit/px)
24
24
24
48[a]
48
Maximum resolution over single link at 24-bit/px[b]
1920×1200p60
1920×1200p60
1920×1200p60
2560×1600p75
4096×2160p24
4096×2160p60
Maximum resolution over single link at 30-bit/px[c]
N/A
N/A
N/A
2560×1600p60
4096×2160p24
Maximum resolution over single link at 36-bit/px[d]
N/A
N/A
N/A
1920×1200p75
4096×2160p24
Maximum resolution over single link at 48-bit/px[e]
N/A
N/A
N/A
1920×1200p60
1920×1200p60
Maximum 3D resolution (using a full resolution 3D format) over single link at 24-bit/px
N/A
N/A
N/A
N/A
1920×1200p60

How do I use dual displays to have a full screen app on one monitor and another full screen app or the desktop on the other?

How do I use dual displays to have a full screen app on one monitor and another full screen app or the desktop on the other?
I want to have my itunes visualizer on my TV which is connected via HDMI adapter, and still have access to full screen itunes and my desktop on the main display.
Any suggestions? App downloads that can do this? Please let me know.

You can't do it. This has been an issue since Lion.

Dual display color and other related issues...

I have posted this on painter forums, though some of the issues coming together here are directly related to issues w/ Snow Leopard and dual displays. Thought I would try here....
This is so bizarre. When I ever I run P11(I think this is going on in P10 too?) w/ the OS X (snow leopard, 10.6.2 on quad core Intel Xeon Mac Pro, 10 GB of RAM) menu bar on my Eizo(making it the main display), and the Apple Cinema display left as the #2 monitor, I get very annoying brush cursor artifcats left randomly on the Eizo screen after strokes. One cannot predict when the cursor will leave it's gray "marks", but it will do it, sometimes 5 strokes in a row, sometimes after 15 strokes or so? If I move my brush back over them, or change the image percantage view, they vanish, obviously new ones coming back, as I work.
However I put the OS menu bar on the AC display, yet work back on the Eizo, this does NOT happen. No cursor artifacts. Well, at least I can summon the issue
The reason I am doing this is Snow Leopard has bad color issues w/ dual displays (well documented, much to Photoshop CS4 users frustrations, and mine). Apple needs to fix it... but for me to see the right color on the Eizo(this is my main color and superior display), it needs to be the main monitor(menu bar) in 10.6.2.
So, you can see my trap - Accurate color, or annoying cursor artifacts left on the screen (sorry, it really bugs me as I work) as I work in Painter.
Attempted fixes: Trashed all of Painter's prefs, all of Wacom's Intuos 4(latest driver) prefs and software, switched plug ins on the back of the mac for the displays(lots of restarts), ran cache cleaning Cocktail and DiskWarrior, etc. -- no change, as I can duplicate the issue w/ the above set up. A sidebar or maybe be very related note: I have an iMac w/ max amount of ram (model not very old -- maybe 1 or 2 old) and I have had a long standing issue working on the iMacs we have had w/ this brush cursor artifact problem (in Leopard and Snow Leopard). I am on one monitor w/ the iMac, so you know here the menu bar is...hmmmmmmmm.....?
Thanks!, T

I have posted this on painter forums, though some of the issues coming together here are directly related to issues w/ Snow Leopard and dual displays. Thought I would try here....
This is so bizarre. When I ever I run P11(I think this is going on in P10 too?) w/ the OS X (snow leopard, 10.6.2 on quad core Intel Xeon Mac Pro, 10 GB of RAM) menu bar on my Eizo(making it the main display), and the Apple Cinema display left as the #2 monitor, I get very annoying brush cursor artifcats left randomly on the Eizo screen after strokes. One cannot predict when the cursor will leave it's gray "marks", but it will do it, sometimes 5 strokes in a row, sometimes after 15 strokes or so? If I move my brush back over them, or change the image percantage view, they vanish, obviously new ones coming back, as I work.
However I put the OS menu bar on the AC display, yet work back on the Eizo, this does NOT happen. No cursor artifacts. Well, at least I can summon the issue
The reason I am doing this is Snow Leopard has bad color issues w/ dual displays (well documented, much to Photoshop CS4 users frustrations, and mine). Apple needs to fix it... but for me to see the right color on the Eizo(this is my main color and superior display), it needs to be the main monitor(menu bar) in 10.6.2.
So, you can see my trap - Accurate color, or annoying cursor artifacts left on the screen (sorry, it really bugs me as I work) as I work in Painter.
Attempted fixes: Trashed all of Painter's prefs, all of Wacom's Intuos 4(latest driver) prefs and software, switched plug ins on the back of the mac for the displays(lots of restarts), ran cache cleaning Cocktail and DiskWarrior, etc. -- no change, as I can duplicate the issue w/ the above set up. A sidebar or maybe be very related note: I have an iMac w/ max amount of ram (model not very old -- maybe 1 or 2 old) and I have had a long standing issue working on the iMacs we have had w/ this brush cursor artifact problem (in Leopard and Snow Leopard). I am on one monitor w/ the iMac, so you know here the menu bar is...hmmmmmmmm.....?
Thanks!, T

Dual Displays - sleep delays

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