External Monitor display issue

The external monitor for my mac book pro displays large/wide text when both screens are open. If I shut the laptop, the external monitor display returns to a normal view. I tried going to system preferences, displays and it's either on best for display or in scaled, the maximum 1920 x 1080.
Please advise.

Where is extended display mode? In display screen, the mirrored mode is checked, both displays are in 1920 x 1080, not sure what else I can do here? BTW: it just started happening (all was normal on both screens) until I used laptop at my work and connected it to external screen (school) with VGA adaptor (at home I use a DVI).

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I'm in the market for a laptop. Which of Apple's laptops will I best connect 2 external monitors/displays?

I'm in the market for a laptop. Which of Apple's laptops will I best connect 2 external monitors/displays?

I've just bought a Pro Retina. As far as I know this is the only one which will connect 2 external monitors running different programmes ie not cloned.
You use the 2 thunderbolt ports for the DVIs (if they're not Apple monitors)
You need 2 thunderbolt to DVIs. MiniDisplay port to DVI might work too (MIGHT WORK! Not sure yet) and these are a lot cheaper.

Lenovo X201 external monitor resolution issue

Hi,
I'm having issues connecting my Lenovo X201 through the docking station -> display port -> Dell 3011. The native resolution for the monitor is 2560x1600. However, I currently can only set the resolution to 1920x1080 (ugly!) as any high resolution results in the monitor entering power save mode.
I'm using xrandr to set the video mode in my .xinitrc (running dwm). This creates a good Xinerama config for dwm.
I'm currently using the line
xrandr --output DP1 --mode 1920x1080 --above LVDS1
to set my resolution. When I change to --auto or --mode 2560x1600, or 1920x1200 etc I get the blank screen on the external monitor. I'm using the xf86-video-intel-sna driver package (I tried the -uxa as well to no avail).
Any hints?

I was able to get it by having arandr help generate the config, here's the solution that worked for me:
xrandr --output HDMI1 --off --output LVDS1 --auto --right-of DP1 --output DP1 --pos 0x0 --rotate normal --auto --output VGA1 --off

MacBook Pro 2011 Dual External Monitors/Displays.

Is it possible to connect and run two external monitors (non-Apple - with DVI input) from a MacBook Pro 15 or 17". (ie, close the lid on the MBP and have two monitors running). Do you need extra hardware?

needs, as of this date, a thunderbolt display, as you will not be able to daisy chain anything other then thunderbolt displays. So you would get a thunderbolt display and then can use that to connect a second display to it with a dongle of your choice.
But it will work, and is natively supported.
There are alternatives to this like DisplayLink which is used to make a usb hardware be able to connect DVI to usb and usb to your computer.
but they've been having some issues with Lion however it's only with earlier MBP models so you might be good. This would be a cheaper solution.
Google usb to dvi I have the Arkview adapter but they're all the same because they use the same drivers. Again, your best bet is a thunderbolt display or waiting for someone to make an adapter that lets you connect multiple display with minidisplay port/thunderbolt.

T420s: External Monitor displays flashing Multiple Colors (a la Kanye West video) then shuts down

Has anyone seen this? I've had it happen to several T420s models. While connected to a docking station with the lid closed, the external monitors will just display flashing colors really quickly like in Kanye West's "All of The Lights" music video. Once the display is done, the laptop shuts off. When I first experienced it, it was on my personal laptop. I switched shells and popped my hdd into another one. It ended up happening again sometime down the line. It then happened to my boss' as well. Most recently I've had a colleague report the same issue. Does anyone have an idea as to what could be the issue?

I have the same problem too. I am not using any docking station. It occurs very rarely and I notice it happening when I connect to an external monitor or when in video calls. Happens both in Windows and Ubuntu. I tried switching to a different T420s laptop and I see the same behavior there too (but not as frequently as the other one).
M_Wilson's description of the issue is spot on. The screen flickers colorfully for about 15-20 seconds and then the laptop shuts off completely.
I also noticed sometimes that the laptop gets hot under the part where the display card is present (near the fan outlet vent on the left side). The laptop fan is running at full speed at that time.

MBP external monitor resolution issue

Hi, im having issues with my 2010 MBP 13 inch, which has an Nvidia 320M,
Ive installed Windows 7 32 bit, and connected a Hanns G HG216D external monitor thru a mini display port to VGA connector.
The problem is that the maximum resolution i can get is 1024x768, i cannot choose or create the native resolution of my monitor which is 1680x1050.
Ive tried installing the monitor drivers with no luck.
Does someone has experience on this?
Thanks in advance!

I was able to get it by having arandr help generate the config, here's the solution that worked for me:
xrandr --output HDMI1 --off --output LVDS1 --auto --right-of DP1 --output DP1 --pos 0x0 --rotate normal --auto --output VGA1 --off

MacBook Pro 13 + LG W2240T - No external monitor display

Hi all. Have a brand new MacBook Pro 13 and LG W2240T connected with the MiniDisplay-->DVI-D adaptor. When I plug in the adaptor the screen on the Macbook flashes, the LG immediately says "DVI-D Power Save Mode" and then goes black. When I click "Detect Displays" it shows that no external monitor is attached. If I unplug the connector the MacBook display flashes. I think the Macbook is seeing something but it isnt sending a signal to the display. If I unplug the cable from the monitor I get a general "check signal" message floating around the screen. Dont think it is a problem with the screen. I dont want to have to shell out another $30 for a MiniDisplay -->VGA adaptor and use an analogue signal with the beautiful new digital display.
Any hints or suggestions appreciated.

I'm having the same trouble. Actually, my Macbook detects the monitor but no signal is reaching it. I am using a DVI-A cable from what I can tell. There appears to be a DVI-D or DVI-2 type cable available as well.
The connection is as follows:
Macbook Mini Display Video output to (Mini Display/DVI adaptor) then the DVI-A cable to a DVI/VGA adapptor (sub-D monitor connector) to the external video monitor input. I can see a "No Signal" message when I use a "picture in picture" function on the external monitor screen but get just a black screen with the monitor set to full screen VGA input.
So do we think the trouble is the type of DVI cable or is there some further Mac secret handshake that I need to prompt the output from the Macbook. The odd thing (to me anyway) is that the Macbook recognizes the monitor by its brand and model number after doing a "Discover Monitors" search. But the signal does not reach the monitor and I don't know if there is anything else I need to do or if it just doesn't work.
Further info is that I just tried disconnecting the DVI input, which I use as the main video connection to my monitor and I get the stock "arora" screen image from the Macbook but that's not what is currently being viewed on the Macbook screen. So perhaps I can just set the Macbook to "Mirror" the displays and use the DVI connector. The trouble with that is that the DVI connector is occupied on both of my external monitors. I haven't even tried the other monitor yet as it's a plasma TV in another location.
What do you guys and gals think is the best and most cost effective fix here? I just want to be able to output signal from my Macbook onto the larger displays so that I can work more comfortably.

Use G5 iMac as external monitor/display for Intel iMac?

I have a 24" Intel iMac and a 20" G5 iMac (which is sort of mothballed now).I was wondering if it is possible to use the older iMac as an external monitor, mainly to save the expense of buying a "proper" external display when there seems to be a perfectly usable one sitting there in the G5 iMac.

translate.google.com.
Actually, it didn't translate very well. But the instructions are basically how to wire up an adapter cable. The G5 iMac appears to use standard DVI signals, so you just need to make a DVI cable to plug in to the internal connector. The table between pages 7 and 8 is what you want. If you've used a soldering iron around electronic devices before, that table is pretty much all you need. The picture of the backside on page 9 is neat. Using the ethernet connector hole to route the wiring. Almost looks like it came from the factory that way.

RMBP + External Monitor + SwitchResX Issue

Hey guys. I am currently using a rMBP 15" with an Acer K272 external monitor. I am using the program SwitchResX to run the monitor in HiDPI mode (2560x1440 running at 2048x1152 hidpi). However, I get this weird bug when opening the lid of my mac. When I am using it in clamshell mode while running the monitor in a HiDPI resolution and I open the lid, OS X logs me out and changes the resolution back to 2560x1440. It seems like a very strange bug. I have contacted SwitchResX and they said it has nothing to do with their program but is rather a bug in OSX (most likely the windowserver is crashing). Any ideas on a fix for this or how I can report it to Apple? Thanks a lot!

Where is extended display mode? In display screen, the mirrored mode is checked, both displays are in 1920 x 1080, not sure what else I can do here? BTW: it just started happening (all was normal on both screens) until I used laptop at my work and connected it to external screen (school) with VGA adaptor (at home I use a DVI).

Remembering setting on external monitor/display

MacBookPro 2.4GHz 2 duo w/ Leopard:
I use an external monitor (samsung, older) at work; sometimes my computer remembers my display settings (i.e. automatically sets to the correct resolution and arrangement) and sometimes it doesn't. I haven't been able to find a pattern.
Is there any way to make it remember all the time?
Thanks.

A search over at <http://versiontracker.com> turns up
SwitchResX
<http://www.versiontracker.com/dyn/moreinfo/macosx/15467>
Display Maestro
<http://www.versiontracker.com/dyn/moreinfo/macosx/10910363>
DisplayConfigX
<http://www.versiontracker.com/dyn/moreinfo/macosx/21600>

T400, External monitor displayed off center.

So I have a Lenovo T400 with the ATI/onboard switchable graphics. When I plug it into my external monitor with the onboard graphics enabled, it displays correctly. When I have it connected with the ati graphics enabled, it displays off center and cuts off the right 1/5 of the screen. If I have my external display at a lower resolution, it works like it's supposed to.
1680x1050
1440x900
I've already tried reinstalling the drivers and adjusting the screen position with the monitor... any other ideas?
BTW this is on Windows 7. Laptop code is 2764-CTO

I hate to bump this, but I'd love some help.
Thanks

External monitor flickering issues on T520

Hi, I have a Lenovo T520 with Nvidia NVS 4200M with the latest driver installed. I pluged both a VGA external monitor, then removed it and pluged a newer Displayport monitor and both monitors flicker. Thank youFrançois

Yes they are all on recommended resolutions. I did a factory reset on my Dell Ultrasharp monitor (with mini-displayport to displayport cable) but it did the same flickering on an older HP LCD display with VGA connexion. I'm going to try changing the vsync settings. It is on "use the 3D application setting" now but I will try "adaptive". And I also noticed there is a newer Nvidia driver from windows update, I will try that after. Thank you!Frankie

3 external monitor display

I have 1 monitor plugged into VGA, one into a USB which is an external StarTech graphics card, and I have one in the DisplayPort. I want to have all 3 external monitors on, as well as the main laptop display.
Is this possible?

Thanks for your reply gnunn.
Turn off with
xrandr --output LVDS1 --off
via commandline results in a short flickering where both screens are off and coming back on after one second. The same behaviour as with the Gnome GUI.
xrandr show this:
sebastian@Wastl2Go ~ $ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1024, maximum 32767 x 32767
LVDS1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
1280x800 60.0*+ 40.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 connected primary 1280x1024+1280+0 (normal left inverted right x axis y axis) 376mm x 301mm
1280x1024 60.0*+ 75.0
1280x960 60.0
1152x864 75.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0
720x400 70.1
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
TV1 unknown connection (normal left inverted right x axis y axis)
848x480 59.9 +
640x480 59.9 +
1024x768 59.9
800x600 59.9
I have no Idea what is ment by TV1. My Laptop is a Dell Latitude E5500 which has only the VGA connector for external Monitors.

Macbook Pro and external monitor sleep issues.

I recently upgraded to a new 13 inch MacBook Pro to replace my previous one. With the upgrade, I'm now on the latest OS and I have a Thunderbolt instead of Mini-displayport output. I have a Dell U2410 monitor which has worked great up until now, but I now have the following behavior:
When the laptop sleeps (or puts the display to sleep) the monitor begins to turn on and off. It goes to powersave mode and immediately wakes up, realizes there's no signal, and goes back to powersave mode, etc etc etc.
When I wake the computer up from sleep, the monitor's behavior stays the same. The laptop never detects the display and begins sending a signal.
If I unplug and replug the adapter, all is well.
There seem to be two separate issues: whatever signal the computer continues to send down the display cable after sleep seems to confuse my monitor, secondly, the computer never again sends a real video signal down the line after it wakes up.
I'm on the latest 10.8.3. My adapter is the same adapter I have been using for years, an apple mini-display port to DVI adapter. Supposedly this adapter is still compatible with the Thunderbolt port.
I've seen lots of issues online about wake up issues with the latest OS. Is there a workaround for this yet or do I have to uplug my monitor anytime I sleep the computer?

Hi Steve,
I have had the exact same issues after adding a WD Thunderbolt Duo external drive to a Mid 2011 iMac and then daisy chaining the Dell U2410 monitor off that.
My Mini DP to DVI cable ceased working properly - sleeps issues.
After buying one of these adapters of Ebay:
http://www.ebay.com.au/itm/3-in-1-Mini-Displayport-to-HDMI-with-audio-DVI-DP-ada pter-3in1-convertor-Macbook-/110861703462?pt=US_Audio_Cables_Adapters&hash=item1 9cfdf5926
I then tried all the different cables that came originally with the Dell U2410 with that adapter, and none of then would put the U2410 to sleep properly. The backlight would stay on, or "No Displayport Cable" would float around the Dell display with the backlighting still on. Or otherwise the Dell would try to go to sleep and then wake up again and cycle like you found.
Apples Mini DP to VGA adapter was sleep successful with the VGA cable (Analogue) but the output picture was not as sharp as DVI or Displayport, plus there was RF interference with the cable.
After lots of internet searching I have found a near perfect solution:
A HDMI to DVI cable with the HDMI end connected to the Ebay 3 in 1 adapter, which then connects to the Thunderbolt port.
Connect this to DVI-D 1 on the Dell U2410.
On the Dell in Menu - Other Settings, disable DDC/CI
Now in OSX Settings - energy Saver you will have to tick:
"Put Hard Disks to sleep where possible" and select a short time frame for "Computer Sleep"
I have found that the display would go black but the backlighting on the Dell U2410 would stay on, when the display went to sleep on the Mac as per the Energy Saver "Display Sleep" setting.
The backlighting on the Dell would only turn off when the time for 'Computer Sleep" has elapsed and the external Thunderbolt hard disk went to sleep as well.
The Dell U2410 would then wake up correctly as well when my iMac woke, with this setup.
Cheapest solution for you would be to try an Apple or Ebay HDMI to DVI adapter and then use the DVI - DVI cable that came with the Dell.
If that fails get the 3 in one Adapter and use my Mini DP/Thunderbolt to Ebay Adapter to DVI-DVI cable setup.
I'm assuming your new Macbook Pro comes with the HDMI port ?
I believe the Sleep Issues with this monitor are all related to appropriate signal on the cable, and only the HDMI to DVI solution will work correctly on Mac's connected to the Dell U2410.
Good Luck. :-)

BootCamp Windows7 and second Monitor display issues

I'm running BootCamp Windows7 on a 2010 15in MacBookPro. While my OSX side recognizes & displays to my ASUS VS238H-P monitor, the Windows7 won't output an image. The monitor is connected by a HDMI Cable.I have used http://forums.civfanatics.com/showthread.php?p=8596214 to get the right driver and thus monitor recognition form the control panel. At this point the system says it recognizes the monitor, give me all the normal display option for outputing an image, but the monitor says it is recieving no signal. Can anyone help me with this? I've seen alot of simmilar issues as I've looked for answers but nothing that directly addresses this.

I'm running BootCamp Windows7 on a 2010 15in MacBookPro. While my OSX side recognizes & displays to my ASUS VS238H-P monitor, the Windows7 won't output an image. The monitor is connected by a HDMI Cable.I have used http://forums.civfanatics.com/showthread.php?p=8596214 to get the right driver and thus monitor recognition form the control panel. At this point the system says it recognizes the monitor, give me all the normal display option for outputing an image, but the monitor says it is recieving no signal. Can anyone help me with this? I've seen alot of simmilar issues as I've looked for answers but nothing that directly addresses this.

External Monitor display issue

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