Resolution Limitations with Second Display

What´s the maximum video resolution macbook MB403 can drive?
I´m using a second display (Samsung wide screen syncMaster 226BW, and after configuring it at 1680x1050 - which is the usual resolution for this type of display, I realized that the actual resolution was not greater of 1280x800, although the video configuration set indicated and normaly accepted the 1680x1050 as the second display resolution.
Is there a configuration setting I have forgotten?
It seems that 1280x800 is the higher resolution accepted by macbook own display. Is there any relation or limitation related with a second display?
Thanks.
Reginaldo Canova

So does anyone have experience with the Envision 22" LCD display (G2219w1)?
It works well with my 5-year-old PowerMac G4 BUT with the MacBook the whites and grays are tinged with color and the overall colors are overly saturated. Moreover, the pictures are grainy and text is muddy. I can't seem to find a good match of resolution after trying several combinations. It's reasonably sharp at 1680x1050 but the image is quite small (about 3" border on all sides which is pretty much the same size as the MacBook).
Is there anything I can do? I've tried lots of adjustments on the LCD and in the display configuration on the MacBook.

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Resolution problems with second display

I recently attached my old 30" cinema display to my new iMac with a minidisplay to DVI-D adaptor, and I can't get a resolution above 1280x800 for the 30"! Does anyone know what I have to do to enable the full resolution choices? Any help would be appreciated!
Thank you!!

So does anyone have experience with the Envision 22" LCD display (G2219w1)?
It works well with my 5-year-old PowerMac G4 BUT with the MacBook the whites and grays are tinged with color and the overall colors are overly saturated. Moreover, the pictures are grainy and text is muddy. I can't seem to find a good match of resolution after trying several combinations. It's reasonably sharp at 1680x1050 but the image is quite small (about 3" border on all sides which is pretty much the same size as the MacBook).
Is there anything I can do? I've tried lots of adjustments on the LCD and in the display configuration on the MacBook.

24" imac with second display that flickers on and off randomly

Hi, I'm a n00b here, I've read a handful of threads before posting this a I cant seem to find a definitive answer.
I have a 24" 2.4Ghz aluminium iMac and I've recently purchased a HP zr24w 24" IPS panel as a second display, connected with an apple miniDVI - DVI connector.
The screen flickers off, to totaly black every time the mac seems to be having a hard time doing something, be it fast scrolling, flash video, but someimes randomly.
I have boot camp installed with winblows vista (for work) the screen does EXACTLY the same thing, all be it less frequently. This for me rules out the Mac OS, i think it must be something video card/driver related.
Was there ever a fix for this? most of the threads seem to just die with no official answer, it would appear that MBP users were ok until the last 10.6.3 update, when the problem seems to have returned, although i think thats a different issue with the same net effect.
I have spoken to apple care and the very helpful girl I spoke to send me some logging software which I've run and sent the logs back, that may help them out someway.
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well, some time has passed, here's where I'm at so far.
I tried a friend's samsung 24" screen and all was good with the world, no flickering on and off, no black outs nothing, for days it was all fine. I swapped the HP monitor back on and it went right back to its old ways. I called HP tech support, they decided that the monitor was faulty, i returned it to where I got it from and they have sent me a new one. Which was fine, for about 7 hours!!
So, to recap, the mini-DVI to DVI adapter is fine as it worked on the samsung screen, the HP screen is brand new and exhibiting the exact same issue as the first one (cant be 2 faulty ones surely) The samsung screen was fine.
This leads me to think that there is some compatibility issue between the 24" imac and this particular (hp zr24w) monitor.
I have followed apple support's requests for data logging but they cant find anything wrong there.
I'm out of ideas, any help would be GREATLY appreciated !!!
thanks
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Hi,
I'd really appreciate someone's input here - this article (http://support.apple.com/kb/ht3131) guides you through using a macbook pro in closed clamshell with a second display - the trouble is that my machine goes straight back to sleep within seconds of me waking it up?? - I'm using the 'allow bluetooth devices to wake this computer' setting.
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Is the computer connected to power?

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Late 2010 Unibody MacBook -- Resolution problems with external display...

Hi Apple Community,
I have a late 2010 white unibody which I've been using with my 30" LCD TV, both as a secondary monitor and in clamshell mode. I connect with an apple display to hdmi cable. I've been using this setup for a few months and it has always looked FANTASTIC. Never any issues. Then out of the blue, just the other day, the resolution on my 30" had become all screwed up. Now it is very pixelated, color and resolution are all off, and everything lags.
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Hi Apple Community,
I have a late 2010 white unibody which I've been using with my 30" LCD TV, both as a secondary monitor and in clamshell mode. I connect with an apple display to hdmi cable. I've been using this setup for a few months and it has always looked FANTASTIC. Never any issues. Then out of the blue, just the other day, the resolution on my 30" had become all screwed up. Now it is very pixelated, color and resolution are all off, and everything lags.
What I've tried so far: I've checked all the display settings in system prefs. Res set to 1080i, color calibration is set to factory settings, etc. I restarted multiple times, with the monitor connected and without. I rebooted in safe mode to reset all display settings to factory. I've checked my cords, used the secondary hdmi port on my TV, messed with display settings on the television and still NOTHING.
I cannot for the life of me figure out why this suddenly started happening. Any suggestions would be greatly greatly GREATLY appreciated! (I had to watch Game of Thrones on my computer screen! My 13" computer screen! Oh! The indignity!)
Thank you all in advance!
PS - I run Lion and all software is up to date!

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I have a 27" Samsung monitor as my main display hooked up to my MacBook Pro. I just recently updated to Lion. Now, sometimes, when I open the MBP and turn on the Samsung monitor the MBP screen stays black and I have to go to the Displays icon on the menu bar and click Detect Displays for the MBP screen to come on. I don't remember ever having this problem with Snow Leopard. Is there a setting somewhere that I am missing? Is anyone else having this problem?

Is your MB Pro Thunderbolt or MiniDisplay port? I don't have a different answer either way, just wondering. I have the same Samsung 27" and my MB Pro is the mid-2010 (MiniDisplay). I had this happen to me a couple of times. I had read -somewhere??- that it likely has something to do with HDMI. I'm going MiniDisplay>HDMI via an adapter. What had been more of a problem for me regarding 2 monitors was the new behavior of a dual monitor system on Lion. But like all the other changes we're all getting used to now I've adjusted.
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Sup Tdog~!
Try updating the video drivers and the flash player and see if it helps. Also might want to try different browsers and see...
*Non Lenovo employee*
I have a Y2P (i5) ... Feel free to ping me if you want me to test some applications with your Y2P if you have the same model. I don't mind keep doing recovery on it if needed .... =)

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Hi I'm new here and just got my MacBook Pro this morning... Anyway, i was wondering if there was a way to close the macbook without it going to sleep. I have an lcd that i would like to connect the macbook to and use mirroring, but whenever i close the macbook the macbook's screen shuts off the it goes to sleep. Is there any way to close the Macbook and shut off the screen, but keep the macbook running so i can mirror my desktop on the lcd?
MacBook pro Mac OS X (10.4.6)

I believe the correct way to do it is
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I just purchased a 15" Powerbook and have attached a 23" Cinema Display. I have several questions:
Is it possible to turn off the second display without physically detaching it from the PB?
Is it possible to turn off the PB screen and just use the second display? (I know about getting a second keyboard and keeping the PB closed.)
When I have the two displays in "mirror" mode, I am not getting a full screen on the second display when i use the highest resolution on the second display. Is there a way to correct this and still maintain the highest resolution on the second display?
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Hi cerett --
I have to preface my responses by saying I don't have a second display attached to my PowerBook. That said, I think I can answer the first two of your three questions. Here goes:
• Is it possible to turn off the second display without physically detaching it from the PB?
I think your 23" ACD has a power button, right? If so, why can't you just power down the ACD if you want to turn it off without physically detaching it from the PB.
Alternatively, and this also goes to my answer to your second question, you could turn down the brightness to the point where the screen is totally dark. Now, this doesn't seem like an ideal solution by any means, because you'd still have power running to the ACD for no reason, but it would seem to accomplish what you want anyway.
• Is it possible to turn off the PB screen and just use the second display? (I know about getting a second keyboard and keeping the PB closed.)
You write that you already know how to use your PowerBook with the display closed. See: http://docs.info.apple.com/article.html?artnum=86286 So, it sounds like you would like to leave your PB open, but just not have the display on. If so, it seems to me you could just decrease the brightness (using the F1 key or, of course, System Preferences > Displays > Display) to the maximum extent possible so that they display goes totally dark. May not be an ideal option (see above analysis), but it would seem that it should work for you.
Sorry, but I can't help with your third question. I'm not sure, but you might increase your chances of getting the information you need, if you reposted that third question in the Apple Cinema Displays forum, here -- http://discussions.apple.com/forum.jspa?forumID=981 -- as the answer to this question may have more to do with the characteristics of the ACD than of the PB. I'd wait to see if someone comes along here first, and, if not, then repost there.
Good luck.
-- JDee

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Don't know if this is a ML issue or was present in Lion (which I never upgraded to)
Setup...
Old setup was 2010ish MBP and only 2006 iMac. Both with SL 10.6.8 and both have two monitors...no issues.
Upgraded to ML on the MBP on release. Realtively painless process. I tried screen sharing today and I get odd responses with the MBP to the iMac. Just so everyone knows, screen 1 is the main iMac screen and screen 2 is the additional monitor. When showing both screens I could see all screen realestate. However, when I changed to only display screen 1 I started having issues. I couldn't get the entire screen to fit within the window nor scroll to show areas not displayed. Sometimes switching between fit in window and no fit, I would get a blank screen. Screen 2 only displayed and all is fine. I noticed on screen 1 that there was a little black bar or open space on the bottom of the window that was exactly the same size that was missing from the top. No ability to fit or scroll would allow the black space to move so that the menu bar on the top of the main monitor would display.
After doing a bit of searching with no luck and scratching my head, I took a look at the Arrangement screen in the display settings. Wouldn't you know it that the main screen (having a smaller resolution than screen 2) was aligned so that the top of each display was even with each other leaving a small space on the bottom of screen 1 compared to screen 2. When I moved screen 1 in the arrangement screen to a more drastic alignment to verify this was the problem...screen sharing crashed when going from both screens to only display screen 1. Tried screen sharing again going from two displays to one, crashed again.
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I have a similar configuration (Lion 2011 MBP and SL 2009 iMac w/ second display). After installing the recent Remote Desktop update things went awry when trying to share the iMac SL displays with the MPB Lion.
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I thought about what you mentioned about the display screen arrangement, so I decided to just test it for myself, arranging both displays side-by-side on the displays arrangement control panel. Surprisingly, it worked!
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I am trying to add a second monitor to expand my desktop area. I routinely do this with my G5 laptop by simply plugging in a second monitor, clicking on DISPLAY in SYSTEM PREFS, clicking ARRANGEMENT, and clicking off MIRROR DISPLAYS.
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This is an update to my previous post. I searched on Google about this problem and found an answer -- an old Macworld article:
http://www.macworld.com/article/39969/2004/10/imacscreenspanning.html
It describes a freeware program called Screen Spanning Doctor. I printed out the page and followed the instructions. It worked! I now have a Samsung SyncMaster 930B set at 1280 x 1024 and my iMac G5 set at 1440 x 900 (maximums for both) and They are not mirrored; the Samsung monitor extends the desktop of my iMac G5. I couldn't be happier.
Just in case Screen Spanning Doctor does not work for you, be sure to print out this Apple support document, Resetting your Mac's PRAM and NVRAM:
http://support.apple.com/kb/HT1379?viewlocale=en_US
You can never be too careful. I believe what this will do is undo whatever changes Screen Spanning Doctor does. Per the Readme:
"This program is intended to unlock some features of the graphics hardware in some Macs (iBook, iMac, eMac but not for all models - you can find a complete list at my website http://macparts.de/ibook). On supported Macs it will allow the use of an extended desktop where usually only mirrored mode is available. This enables you to use an external display to extend your workspace. It will also unlock additional resolutions for the external display making it possible to driver high-resolution screens. This is especially nice if you want to use an LCD panel that has a higher native resolution than the 1024*768 of the internal display. After you apply the patch you should see an additional tab in the displays prYou will only see this tab if you have at least the monitor adapter plugged in."
Good luck! (I'm going to make a donation to macparts.de, which created this program. I figure it's worth $19 -- what I paid for the VGA display adapter at the Apple Store.

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Is it possible to use a second display with a 30" cinema display? The card has obviously dual DVI outputs.

If you have an older Mac Pro with the Nvidia GeForce 7300 GT graphics board, only one port is the dual-link DVI needed by the 30" display. All other Mac Pro graphics boards have two dual-link DVI ports, so can run two 30" displays at full resolution.

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Hi I just bought a ThinkPad Twist S230U (3347-6LU) with Intyel HD 4000 graphics adapter and I try to connect my external 22" LCD monitor (1680x1050) using the miniHDMI to HDMI cable, but when I extend the desktop to the second display only have the 1920x1080,1280x720 and 1024x768 choices.
How can i add the correct resolution (1680x1050)?
Regards,
Alejandro Castrejon

I'm having a similar problem. When I plug the HDMI cable into the laptop, the screen does a quick flash to black like normal, but there's no signal to the external monitor. After a few seconds, the monitor goes into "HDMI power saving mode." I've tried multiple cables, multiple adapters, and even tried hooking it up to an HDMI projection system at my office. Same result with everything--laptop acts like an external display has been connected, but there' s no picture at the destination.
This used to work without a problem, so I don't know what's changed. I tried updating the display driver and even went back to Windows 8 and up to 8.1 again. Nothing. It's a huge problem because I travel and present for a living and some of the venues only have HDMI. I bought a minidisplay to HDMI adapter, but it would be nice to use the native port.

IMac with Snow Leopard doesn t work without second display connected

Hi,
I've a iMac 24" and I would like to resell it urgently.
But I've a big problem, if I disconnect my second display (belinea 20"), the iMac screen become grey or blue after many second.
If I boot system, after the grey clock : nothing, grey or black screen.
The Os is snow leopard disc, update version (10.6)
The iMac version is iMa8,1
The EFI bios is : IM81.00c1.b00
I tried :
Reinstall with format
Utility disc on boot cd (scan disk & rights repair)
Even when I try to boot cd without second screen, I ve white screen
(after a update to 10.6.4)
Help me please

Hi Tony,
I don't how these instructions are the same, here is what the article says:
_Resetting PRAM and NVRAM_
• Shut down the computer.
• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
• Hold the keys down until the computer restarts and you hear the startup sound for the second time.
• Release the keys.
Your original post said *"Restart the mac and depress the alt, command, P and R keys simultaneously. You should hear the boot chime. Keep the keys depressed until you hear the boot chime a further three times. On the final boot chime release the keys and let the mac boot normally."* How I understand your post that totals 4 chimes vs. the 2 Apple specifies. Am I missing something?
Message was edited by: rkaufmann87

Resolution Limitations with Second Display

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