Dual Monitor Behavior

Hi All,
New Mac Pro system with ATI 4870. Dual monitor setup, 23" cinema connected to mini display port and 30" cinema connected to DVI. The 23" is the default monitor during boot sequence with the 30" firing up after boot near complete. Any way to change this behavior, 30" followed by 23"?
Matt

I just don't think it really matters unless your machine is not set for automatically logging in, or running verbose or single-user mode on boot-up. The login screen would just appear in the other (secondary) monitor. It might seem to be a hassle if you are constantly messing around with the boot sequence or constantly logging in and out, sleeping or screen-saver lock.
If the 23" is your secondary (I'm assuming this is what you want) and the menubar is on the 30", I would leave well enough alone. Now if you wanted the 23" as the primary, you can use the Displays preference pane to move the menubar to the 23" (from the arrangement tab.) Just click and drag the little white bar. I'm pretty sure you know that but thought I would throw that out there.
Performance-wise, there should not be any difference between the 2 displays.
D.

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I recently purchased a mac pro dual quad core with radeon x1900xt graphics card. Updated to 10.5.1. I have a dual monitor setup: 2 Dell 2001FPs connected to the x1900xt with dual-link DVI cables.
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Message was edited by: istra

It appears I have solved my problem...for the time being.
1. rechecked all connections, replaced cable on secondary monitor with new (no change in behavior)
2. reviewed system log and saw this junk:
{quote:title=system log}
Dec 19 11:57:37 dhcp-xxx-xx-xxx-xxx [0x0-0x2f02f].com.apple.systempreferences[690]: objc[690]: Class O3Panel is implemented in both /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Con trast.monitorPanel/Contents/MacOS/Contrast and /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Geo metry.monitorPanel/Contents/MacOS/Geometry. Using implementation from /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Geo metry.monitorPanel/Contents/MacOS/Geometry.
Dec 19 11:57:37 dhcp-xxx-xx-xxx-xxx [0x0-0x2f02f].com.apple.systempreferences[690]: objc[690]: Class O3Panel is implemented in both /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Geo metry.monitorPanel/Contents/MacOS/Geometry and /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/VPT .monitorPanel/Contents/MacOS/VPT. Using implementation from /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/VPT .monitorPanel/Contents/MacOS/VPT.
Dec 19 11:57:37 dhcp-xxx-xx-xxx-xxx [0x0-0x2f02f].com.apple.systempreferences[690]: objc[690]: Class O3Panel is implemented in both /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/VPT .monitorPanel/Contents/MacOS/VPT and /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Bez el.monitorPanel/Contents/MacOS/Bezel. Using implementation from /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Bez el.monitorPanel/Contents/MacOS/Bezel.
Dec 19 11:57:37 dhcp-xxx-xx-xxx-xxx [0x0-0x2f02f].com.apple.systempreferences[690]: objc[690]: Class O3Panel is implemented in both /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Bez el.monitorPanel/Contents/MacOS/Bezel and /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Ext endedTouchSwitch.monitorPanel/Contents/MacOS/ExtendedTouchSwitch. Using implementation from /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Ext endedTouchSwitch.monitorPanel/Contents/MacOS/ExtendedTouchSwitch.
Dec 19 11:57:37 dhcp-xxx-xx-xxx-xxx [0x0-0x2f02f].com.apple.systempreferences[690]: objc[690]: Class O3Panel is implemented in both /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Ext endedTouchSwitch.monitorPanel/Contents/MacOS/ExtendedTouchSwitch and /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Pow erMode.monitorPanel/Contents/MacOS/PowerMode. Using implementation from /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Pow erMode.monitorPanel/Contents/MacOS/PowerMode.
Dec 19 11:57:37 dhcp-xxx-xx-xxx-xxx [0x0-0x2f02f].com.apple.systempreferences[690]: objc[690]: Class O3Panel is implemented in both /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Pow erMode.monitorPanel/Contents/MacOS/PowerMode and /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Aut horization.monitorPanel/Contents/MacOS/Authorization. Using implementation from /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Aut horization.monitorPanel/Contents/MacOS/Authorization.
Dec 19 11:57:37 dhcp-xxx-xx-xxx-xxx [0x0-0x2f02f].com.apple.systempreferences[690]: objc[690]: Class O3Panel is implemented in both /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/Aut horization.monitorPanel/Contents/MacOS/Authorization and /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/TVO ptions.monitorPanel/Contents/MacOS/TVOptions. Using implementation from /System/Library/MonitorPanels/AppleDisplay.monitorPanels/Contents/Resources/TVO ptions.monitorPanel/Contents/MacOS/TVOptions.{quote}
The message above occurred each time I booted the mac pro and I think also when I changed resolutions on the monitors. This appeared to me to be a call to the specialized Apple Display extensions and preferences, not for non-apple displays.
Resolution:
I went into /System/Library/MonitorPanels/ and copied the AppleDisplay folder to the desktop and renamed it to XXXX.old. I deleted the AppleDisplay folder from its previous directory (I left behind the Arrange.monitorPanel, Display.monitorPanel, Profile.monitorPanel and VGADisplay.monitorPanel files). I then rebooted. No problems since. I can change resolutions all I want and my secondary monitor kicks right in, never staying black.
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http://www.blakespot.com/list/images/macprohp_applelcd.jpg
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I have a Mac Pro w/ ATI X1900 XT. I replaced the GeForce 7300 GT that came w/ the pro with this X1900 XT as an upgrade from Apple, purchased after the initial system purchase.
I have a 30" Cinema display and a 20" HP LP2065 LCD (very nice, LG/Philips S-IPS panel, just like the 30" ACD).
http://www.blakespot.com/list/images/macprohp_applelcd.jpg
I have some odd behavior on the HP secondary screen. I never sleep the Mac Pro, but do sleep its screens. When they wake, the ACD 30 lights up right away. The HP does sometimes - but about half the time it takes 2-5 minutes for it to light. The LED goes amber to green right away, but the screen is black (and unbacklit) for a few mins. Sometimes I see random blue lines across the blackish screen of the HP before it goes normal. Sometimes it lights fine but I see a "stuck" mouse pointer - either arrow or the spinning wheel - on that 2nd screen, but the REAL pointer that's tied to mouse control is on the ACD 30. Only when I move the mouse to push the real pointer to 2nd screen (HP) does the "stuck" pointer disappear.
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Hi,
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Best Regards,
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Eason Huang
TechNet Community Support

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Mylenium

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Hello @tomas44,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand that the newest monitor you have connected to your desktop computer does not match the color/white of the existing display, and I would be happy to assist you in this matter!
To ensure that your system is properly configured for dual monitor displays, I recommend following the steps in this document on Using Two or More Monitors with One Computer (Windows 8). If everything is setup accordingly, I recommend following the steps below for the newest monitor:
Step 1. Unplug the power cord from the back of the monitor and the wall
Step 2. Hold the power button down for at least one minute
Step 3. Plug the power cord back into the monitor and then into the wall outlet (not a power bar or surge protector)
Step 4. Press the Menu button on the monitor
Step 5. Navigate to the Factory Reset option and select it
Step 6. Try a different cable connecting your monitor to your computer
If the above steps did not resolve your issue you can try the monitor on a computer or other device to see if the issue persists. Please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
Thank you for posting on the HP Forums. Have a great day!
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

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I'm sorry, I thought "PerfCap" would be a known term.
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LINKS
EVGA Plus:
http://www.evga.com/articles/409.asp
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PICS
My Mac Mini setup, with dual monitors:
http://lh5.ggpht.com/BPfaffenberger/SGV5A7lA2QI/AAAAAAAABMI/CBuR4m3uGRA/IMG_0144 .JPG?imgmax=800
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http://lh3.ggpht.com/BPfaffenberger/SGV49qpHuQI/AAAAAAAABME/b9wo9TZPJdE/IMG_0143 .JPG?imgmax=800
*MORE INFO*
A thread at 123macmini.com on the same topic, including another user's experiences and MUCH better pictures:
http://www.123macmini.com/forums/viewtopic.php?t=19126&postdays=0&postorder=asc& start=0&sid=5a05cb75b90cab5bbc7dfd16b02632c1
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* The EVGA Plus comes with a terrible USB to mini USB cable that will cause all sorts of display problems. Replace it with the type of cable that is used to hook up digital cameras to a USB port.
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Bryan

There has been quite a lot of discussion here about driving twin displays with the mini, and more recently about the potential for USB video adapters to facilitate this, particularly in the light of several vendors claiming they have suitable MacOS devices and drivers 'almost ready'.
The DisplayLink solution seems to be the one most suggested as viable, though it's a pity they have not yet been able to move their drivers from beta - I suspect that puts a few people off. It's therefore good to hear of a real-world experience that should help others decide whether or not to go this route!

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https://discussions.apple.com/community/mac_os?view=discussions
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Hello smurffy
If this is the monitor that you want to connect to
http://reviews.cnet.com/lcd-monitors/mag-innovision-lt565-15/1707-3174_7-2066506 9.html
an Early 2008 Intel iMac
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Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen1" 0 0
Screen 1 "Screen0" LeftOf "Screen1"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "USB Mouse" "CorePointer"
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#Option "Clone" "off"
EndSection
Section "ServerFlags"
Option "AllowMouseOpenFail" "true"
Option "AutoAddDevices" "False"
Option "DontZap" "False"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/misc:unscaled"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/75dpi"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/100dpi"
FontPath "/usr/share/fonts/PEX"
FontPath "/usr/share/fonts/cyrillic"
FontPath "/usr/share/fonts/local"
FontPath "/usr/share/fonts/Type1"
FontPath "/usr/share/fonts/ttf/western"
FontPath "/usr/share/fonts/ttf/decoratives"
FontPath "/usr/share/fonts/truetype"
FontPath "/usr/share/fonts/truetype/openoffice"
FontPath "/usr/share/fonts/truetype/ttf-bitstream-vera"
FontPath "/usr/share/fonts/latex-ttf-fonts"
FontPath "/usr/share/fonts/defoma/CID"
FontPath "/usr/share/fonts/defoma/TrueType"
FontPath "/usr/share/fonts/artwiz-fonts"
EndSection
Section "Module"
Load "ddc"
Load "drm"
Load "dbe"
Load "dri"
Load "extmod"
Load "glx"
Load "bitmap"
Load "freetype"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
Option "XkbVariant" ""
EndSection
Section "InputDevice"
Identifier "USB Mouse"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "SendCoreEvents" "true"
Option "Protocol" "IMPS/2"
Option "ZAxisMapping" "4 5"
Option "Buttons" "5"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
#Option "DPMS" "No"
#HorizSync 28.0 - 96.0 # Warning: This may fry old Monitors
#VertRefresh 50.0 - 75.0 # Very conservative. May flicker.
ModeLine "1024x768" 44.9 1024 1032 1208 1264 768 768 776 817 +hsync +vsync Interlace
ModeLine "1024x768" 65.0 1024 1048 1184 1344 768 771 777 806 -hsync -vsync
ModeLine "1024x768" 75.0 1024 1048 1184 1328 768 771 777 806 -hsync -vsync
ModeLine "1024x768" 78.8 1024 1040 1136 1312 768 769 772 800 +hsync +vsync
ModeLine "1024x768" 94.5 1024 1072 1168 1376 768 769 772 808 +hsync +vsync
ModeLine "1280x1024" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync
ModeLine "1280x1024" 135.0 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync
ModeLine "1280x1024" 157.5 1280 1344 1504 1728 1024 1025 1028 1072 +hsync +vsync
ModeLine "1024x768" 113.31 1024 1096 1208 1392 768 769 772 814 -HSync +Vsync
ModeLine "1280x1024" 190.96 1280 1376 1520 1760 1024 1025 1028 1085 -HSync +Vsync
EndSection
Section "Device"
Identifier "Card0"
Driver "ati"
VendorName "ATI Technologies Inc"
BoardName "M56P [Radeon Mobility X1600]"
BusID "PCI:1:0:0"
Option "AGPMode" "4"
Option "ColorTiling" "on"
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Section "Device"
Identifier "Card1"
Driver "ati"
VendorName "ATI Technologies Inc"
BoardName "M56P [Radeon Mobility X1600]"
BusID "PCI:1:0:0"
Option "AGPMode" "4"
Option "ColorTiling" "on"
Option "AccelMethod" "EXA"
Option "AGPFastWrite" "yes"
Option "DRI" "on"
Option "DDCMode" "True"
Option "MonitorLayout" "LVDS,CRT"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x800" "1024x768"
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Card1"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768"
EndSubSection
EndSection
Section "DRI"
Mode 0666
EndSection
I get that ^^: looks like the VGA screen IS 1280x1024, but for some reason ratpoison thinks it's 1280x800 (all open windows have that size).
this does not happen in DWM, but should work ok with ratpoison too...so I'm guessing it's a wrong setup on my part.
Enabling Xinerama in xorg.conf doesn't even start X at all...it segfaults
What other steps should I take to makea working dual monitor environment? I would like to have 2 X screens btw (my laptop to be screen :1 and CRT screen :0 (the default))

Scratch that..it was working..but silly me forgot to use ":nextscreen" in Ratpoison..so the windows would open at 1280x800 since the damn thing though I'm still on the first monitor

Considering buying a Mac Mini but I need to know about support for dual monitors using DVI connectors.

I have a couple of DVI monitors and I'm looking to replace my Windows desktop with a Mac Mini. I found an article that says it supports dual monitors with Thunderbolt, but I can't find any discussion of using it with existing monitor, or running multiple DVI displays off a single Thunderbolt port.
Has anyone done this? If so, what's the best way to achieve it?

Yes, the Mac Mini has both an HDMI and Thunderbolt/MiniDisplay Port and supports dual displays in either Mirroring or Extended Desktop Mode.
It ships with an HDMI to DVI adapter that you can use for one DVI Display.
For the second DVI display you will need to buy a > Mini DisplayPort to DVI Adapter and plug that into the Thunderbolt/MiniDisplay Port.
see the spec's > Mac mini - Buy Mac mini Desktop Computers

Dual Monitor Behavior

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