Primary display keeps changing

I have a Mac Pro running 10.6.8 with 2 identical monitors. Each time I reboot the primary display changes. Tried resetting the primary display in screen prefs but each time I reboot the primary display shifts to the other monitor.
Any suggestions how to fix?

One of my questions was what happeens if you physically switch the monitor connections to the vido card?
Click Detect Displays too in the Displays system preferences.
Try an smc and pram reset just for the heck ot it too.
Another thing to try is to boot in safe mode and then reboot normally.

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My display keeps changing to 800x600 after upgrade to 10.8.3

After upgrading to 10.8.3 my display keeps changing to 800x600 after it wakes up from sleep. I have to go to preferences and set again, and it works. It is quite annoying. Any clue.

Not much to go on.
What monitor and connection method are you using with the mac Mini..?
Have you tried resetting the > NVRAM and PRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.

Display keeps changing on it's own

For a couple of weeks now my Mac Mini keeps changing the display at random. I have changed the settings on the monitor itself and thru system pref. Nothing fixes it permanently. It looks as though it's going into some sort of zoom effect and the fonts look weird (almost like what windows looks like if you start in "safe mode"). I can do absolutely nothing, just walk away from the computer, and a few hours later go back and it will have fixed itself. Or vice versa. For example, this morning I'm on the computer, everything is fine. I walked away, it went into sleep, I come back hit the space bar on the keyboard to wake it up and I'm in zoom. ????? what is going on? Do I have some sort of virus?

Mine appears to be doing the same thing. I use reset to bring it back to normal. It does not matter if all programs are closed or not. It still does it. When I say reset I mean clicking on the Apple icon and going to reset not the command option r, p. Of course they may be the same thing for all I know as I do not know the short cuts very well.
I also have a RAM problem - the amount of RAM available keeps disappearing. I do not know if this is related or not - but plan to post this question in another community. I only mention it in case it might be relevant.

Windows 7 or Windows Server 2008 R2 domain join displays error "Changing the Primary Domain DNS name of this computer to "" failed...."

Hi,
Windows 7 or Windows Server 2008 R2 domain join displays error "Changing the Primary Domain DNS name of this computer to "" failed...."
DC:windows Server 2008 R2
Domain functional level:Windows Server 2003
When Winxp join domain, have no this error message.
I checked http://support.microsoft.com/kb/2018583?wa=wsignin1.0 does't work.
There have 3 suggestion in this article:
1.The "Disable NetBIOS over TCP/IP" checkbox has been disabled in the IPv4 properties of the computer being joined.
Doesnt's work.
2.Connectivity over UDP port 137 is blocked between client and the helper DC servicing the join operation in the target domain.
On my DC, I run netstat -an, reslut as below:
UDP 192.168.20.3:137 *:*
3.The TCP/IPv4 protocol has been disabled so that the client being joined or the DC in the destination domain targeted by the LDAP BIND is running TCP/IPv6 only.
We are not using IPV6.
This server recently updated from Windows Server 2003 to Windows Server 2008 R2. Before upgrade, when Win7 and Win2008 join this domain, also have the same error message.
Please help to check this issue.
Thank you very much.
BR
Guo YingHui

Hi Guo Ying,
I have faced this critical error which makes over-writes the host names in the domain when you join.
For example: Already you had a host name called as PC.domain.com in the domain.com Domain.
When you try to add the another host name called as PC in the domain.com Domain, it doesn't give you the duplicate name error on the network it does over-write the existing host name called as PC.domain.com & it will add the new host name into the domain.
Host name which got over-written will get removed from the domain. I faced this issue in my project. My DPM host name got removed from the Domain & new host name got joined into the domain which halted my backups for one day.
Final Resolution is as follows:
You need to start the dns console on the DC & drop down the domain name.
Select the _msdcs when you click on _msdcs it will show the Name Server's list on the right hand side.
You need to add the Domain Naming Master under the _msdcs or add all the domain controllers which you had.
After you add the Name server's try joining the PC OR Laptop to the domain which is successfully joins it.
Regards
Anand S
Thanks & Regards Anand Sunka MCSA+CCNA+MCTS

Split Screen on 30" Display, changes in System pref keep changing

Hi,
This is my first time on this forum, so Hi to everyone out there.........!
Anyway,
I have a G4 with a 30" display, everytime I boot up the 30" display splits into 2 halfs, like a mirror of each other and the resolution is 1200 x 800. The only way to fix it is to reboot the PC and then I get the one size screen at full resolution.
I've gone into System Preferences and Displays and locked the configuration change heaps of times but it doesn't seem to stay locked as for some reason the config keeps changing.....
Please note, my laptop stays blank but I can drag screens from my display and make them display into my laptop which allows me to open heaps of sessions up between the two....
Does anyone have the same issues, or this this a first......?
All comments welcomed.
Thanks
Paul

Sorry, I have placed this in the incorrect forum....... I will close it from here and re-post it in the correct forum.
Ta
Paul

HP p6-2120 BIOS will not give me option to change "primary display adapter" for new GEFORCE GT 610

I am trying to change the primary display setting to "PCI Express Graphics", but the setup bios does not give me that option, how can I make that change?

Futuros, welcome to the forum.
When you install a discrete video card the integrated video should be automatically disabled. This will allow for the discrete card to be recognized. Are you having problems with the card not being recognized?
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Chart digital display format keeps changing

I am running Labview 8.5.1 on windows XP. My digital display for my chart keeps changing to %.2f format when I run the VI.
I tried setting the display format to scientific but as soon as I run the VI, it changes back to floating point. I have included the VI. By the way, this did not work for 8.2.1
Does anyone have any suggestions?
Attachments:
Overlay_Elnik-II.vi ‏39 KB
Overlay-Init_Elnik-II.vi ‏34 KB

Joseph Loo
I was unable to reproduce your problem. I changed the format to scientific on all the front panel digital controls and they will not change back for me. I wonder if you need to use the Edit-> Make Current Values Default option in the LabVIEW menu.
I attached a copy of your vi. Modified with the new format. Let me know if it loads correct.
Sorry I was not able to the find or load the init portion of your vi.
Regards,
-SS
Attachments:
Overlay_Elnik-II_no_init.vi ‏33 KB

Keep Mac desktop on primary display (LCD) and Present on External?

Here's the question. Is there a way to keep my mac desktop on my primary display (the lcd on my MBP) while presenting to a projector? When I move the presentation to the external monitor and start the slide show, my LCD goes black. I know this is the "Presenter's Display." Is there a way to just have my mac desktop there instead? I'm using the newest version of Keynote.
Thanks,
Shawn

<<Is there a way to keep my mac desktop on my primary display ... while presenting to a projector?>>
If you mean your regular Mac desktop (and not the Keynote Presenter's Display) then the answer is no. While you are running Keynote, the two display options are as follows:
1) in the Keynote Preferences/Slideshow menu you can assign the presentation to either your Primary display (the screen of your MBP) or a Secondary display (the projector or other monitor).
2) In the Keynote Preferences / Presenter Display menu, there is a checkbox where you can assign the Presenter Information to the "alternate display" - i.e. the one that is NOT showing the presentation itself. If you do not check this box, the "alternate display" will be black, as you have discovered.
These are, at present, the only display options offered by Keynote.
If you would like to suggest a feature modification to Apple, you can do so at the Keynote Feedback forum: http://www.apple.com./feedback/keynote.html
I'm puzzled why you do not want to see the Presenter Information on your MBP while presenting on the projector. On my system I have checked ALL of the options for the Presenter Display so that when I give a presentation, I can know exactly what is coming-up next and when. In this way, I use the presentation itself as my "cue" sheet, rather than working from notes.
Good luck.

HP p6210f BIOS will not give me option to change "primary display adapter" for new geforce gt620

HP Pavilion p6210f NY544AA#ABA
Windows 7 64-bit
Changes: Upgraded to 430 watt
In order to upgrade my pc performance I purchased a PNY GeForce GT 620 with 1GB GDDR3. Following the instructions for pc's with onboard graphic I wanted to change the "primary display adapter" in the BIOS to PCI-e. I checked the HP website to find out where this setting is located in the BIOS. I found out that my BIOS does not even show this setting in contradiction to the image on the HP website. I installed the drivers anyway and restarted the pc hoping it would recognise the card automatically which it didn't. The card is supplied with power since it gets warm and the fan spins but the monitor only works on the onboard video-out.
Question: How can i get the pc to run with the new card? Do i have to upgrade the BIOS? (Momentary Bios is 5.7)

Here are the specs for your HP Pavilion p6-2327c Desktop Computer. According to the specs, this model shipped from the factory with Windows 8 installed. You will need to remove the graphics card, DISABLE "Secure Boot" and ENABLE "Legacy Support" in the BIOS, then reinstall the new graphics cards. Please see Computer Does not Start After Installing a Video Card (Windows 8) for more information about your issue.
If you have any further questions, please don't hesitate to ask.
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I have selected a weather city (in Florida) to be displayed on my home page. It keeps changing to New York. How can I stop this from happening?

on my home page I have selected a city in Florida to display the current weather there. However the city I have selected keeps changing to New York every time I sign back on. How can this be corrected?

It is possible that these details are stored in a cookie as posted above by John99.
*Create a cookie 'allow' exception to keep such cookies, especially in case of secure websites and when cookies expire when Firefox is closed.
*Tools > Options > Privacy > Cookies: Exceptions
In case you are using "Clear history when Firefox closes":
*do not clear the Cookies
*do not clear the Site Preferences
*Tools > Options > Privacy > Firefox will: "Use custom settings for history": [X] "Clear history when Firefox closes" > Settings
*https://support.mozilla.org/kb/Clear+Recent+History
Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, passwords, and other website specific data.
Clearing cookies will remove all specified (selected) cookies including cookies with an allow exception that you would like to keep.

Thunderbolt primary display hdmi

I have a problem with my new thunderbolt display for my mac mini mid 2011.
When I connect the second dispaly ( a sony bravia 40") to the HDMI port it becomes the primary monitor and can't change it so the thunderbolt display keeps being the primary monitor.
Any idea???
Thanks

I have a problem with my new thunderbolt display for my mac mini mid 2011.
When I connect the second dispaly ( a sony bravia 40") to the HDMI port it becomes the primary monitor and can't change it so the thunderbolt display keeps being the primary monitor.
Any idea???
Thanks

G4 PB lost primary display with Sharp PG-B10S projector on extended mode

About a week ago, for no apparent reason, when I plug into my projector in dual screen mode (through the DVI VGA adaptor), my primary screen switches to the projector and the secondary (extended) screen pops up on the internal pb lcd display.
Whatever signal is being sent to the projector in that moment is registered as "not reg." (not regular? not registering?) by the projector. When I switch back to "mirroring", it recognizes the projector, and pops the mirrored display image up onto the wall in short order. When I drop into no mirroring again, it goes back to the same problem.
You might think I could just arrange the screens on the arrangement tab in display prefences. Well, as the primary screen (in extended mode) is the default screen where the display prefences (complete with "arrangement" tab) pops up, and as it is at that moment "not reg." on the projector, I have NO WAY of accessing that dialog box (yes, I even tried some "lucky grabs" to see what I might "fish" off the invisible primary desktop. I nabbed several icons and brought them "home" to my internal display, but no luck on grabbing the display preferences dialog box header.
When I am in "mirror on" mode, the arrangement tab, as you already know, does not give you the option to change.
Tried a second monitor coming off the vga out from the projector, and it also gives me a not reg. when in extended mode.
Tried S-Video out to projector, and it keeps PB internal display as primary display. Tried second monitor direct DVI and through the DVI VGA adaptor, and it also works fine. After getting it working fine on the external monitor, I can then "switch in" the projector and it works properly, convinced the projector is the second monitor. Reboot or close the lid, however, and the computer seems to say, "Oh, you again, eh?" and then goes into conflict.
Are there any keyboard shortcuts or drop down menu options for making the change in some other way than the gui way?

In https://bbs.archlinux.org/viewtopic.php?id=130309 the first link is to https://wiki.archlinux.org/index.php/Forum_Etiquette where you can read about
https://wiki.archlinux.org/index.php/Fo … s_and_Code
No big deal.
Have you tried using just vesa to see if you can start X this way?

How can I setup my thunderbold display to work as my primary display? I would like to have my macbook pro 2011 as my second display. thanks

I have and Macbook pro 2011 february. I have installed Lion with the lastest update. I would like to use my thunderbold display as my primary display. The same way when I close my MB Pro 2011, but I wish to use my Macbook pro display as my secondary display.
thanks

If your Mac has got Mini DisplayPort, purchase a Mini DisplayPort to HDMI adapter and a HDMI cable. You won't have to change any setting, and image will show on your TV after connecting it to your MacBook Pro. See > http://support.apple.com/kb/HT4241?viewlocale=en_US&locale=en_US

Macbook pro redina display keeps on telling me that the hard drive is full from Videos, and yet their is no videos, what can i do?

Macbook pro redina display keeps on telling me that the hard drive is full from Videos, and yet their is no videos, what can i do?

If the Storage display seems to be inaccurate, try rebuilding the Spotlight index.
Empty the Trash if you haven't already done so. If you use iPhoto, empty its internal Trash first:
iPhoto ▹ Empty Trash
Do the same in other applications, such as Aperture, that have an internal Trash feature. Then restart the computer. That will temporarily free up some space.
According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation. You also need enough space left over to allow for growth of the data. There is little or no performance advantage to having more available space than the minimum Apple recommends. Available storage space that you'll never use is wasted space.
When Time Machine backs up a portable Mac, some of the free space will be used to make local snapshots, which are backup copies of recently deleted files. The space occupied by local snapshots is reported as available by the Finder, and should be considered as such. In the Storage display of System Information, local snapshots are shown as Backups. The snapshots are automatically deleted when they expire or when free space falls below a certain level. You ordinarily don't need to, and should not, delete local snapshots yourself. If you followed bad advice to disable local snapshots by running a shell command, you may have ended up with a lot of data in the Other category. Ask for instructions in that case.
See this support article for some simple ways to free up storage space.
You can more effectively use a tool such as OmniDiskSweeper (ODS) or GrandPerspective (GP) to explore the volume and find out what's taking up the space. You can also delete files with it, but don't do that unless you're sure that you know what you're deleting and that all data is safely backed up. That means you have multiple backups, not just one. Note that ODS only works with OS X 10.8 or later. If you're running an older OS version, use GP.
Deleting files inside an iPhoto or Aperture library will corrupt the library. Any changes to a photo library must be made from within the application that created it. The same goes for Mail files.
Proceed further only if the problem isn't solved by the above steps.
ODS or GP can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To see everything, you have to run it as root.
Back up all data now.
If you have more than one user account, make sure you're logged in as an administrator. The administrator account is the one that was created automatically when you first set up the computer.
Install the app you downloaded in the Applications folder as usual. Quit it if it's running.
Triple-click anywhere in the corresponding line of text below on this page to select it, then copy the selected text to the Clipboard by pressing the key combination command-C:
sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper
sudo /Applications/GrandPerspective.app/Contents/MacOS/GrandPerspective
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window by pressing command-V. You'll be prompted for your login password, which won't be displayed when you type it. Type carefully and then press return. You may get a one-time warning to be careful. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator. Ignore any other messages that appear in the Terminal window.
The application window will open, eventually showing all files in all folders, sorted by size. It may take a few minutes for the app to finish scanning.
I don't recommend that you make a habit of doing this. Don't delete anything as root. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means. When in doubt, leave it alone or ask for guidance.
When you're done with the app, quit it and also quit Terminal.

Using a second monitor as the primary display with MiniDisplayPort

I've got a new iMac, but the screen seems to be straining my eyes. I'm trying things like scaling the display, lowering brightness, changing desktop layout, etc, but if all else fails...I'd like to go back to my old external monitor.
So, my question is...if I connected this monitor to the MiniDisplayPort on the iMac, could I use it as a single primary display, or would I have to use it as mirrored or secondary?

Hi Brian,
Thanks for using Apple Support Communities. You can mirror the displays or make whichever display you want the primary in Extended Desktop mode. See this article for details:
How to use multiple displays with your Mac
http://support.apple.com/kb/HT5019
The white bar at the top of the left blue box represents the menu bar and determines which display is your primary display. To change your primary display, click the white bar and drag and drop it on the blue box representing the display you would prefer to be your primary display.
Cheers,
- Ari

Primary display keeps changing

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