External Monitor Went White

I was using my 2011 MacBookPro. I have it plugged into an external HP monitor. All of a sudden the external monitor went completely white. Now I cant get the external back.
The built in monitor works fine. Also, the external monitor is connected via a VGA to Thunderbolt adapter. It has been working fine with this Macbook and previous monitors for around 3 years now.
Any idea what is going wrong?
Thanks!

Go into the BIOS, under config, display, you can change the graphics card. So test your machine when it is in Nvidia Discrete, and Nvidia Optimus (Switchable).
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

Similar Messages

Dual monitor (w/laptop): external monitor is blank.

Hi! just installed arch for the first time a day ago. Right now what I'm working on is on getting my second monitor running (mostly for development purposes... and movies ^__^).
I'm using Arch64 with the open ATI driver and KDE. Whenever I connect the external monitor, the monitor seems to detect a connection occurred (the "check video cable" message disappears when I connect it and comes back when I disconnect it), and so does KDE. When I open my display settings, it tells me a new monitor was connected and asks me if I want to configure it.
Then I choose to configure and use the two monitors giving the following screens (right now I'm at college testing with monitors in there, thus the low resolution, but behavior seems to be exactly the same):
(EDIT: resized. In case of wishing to read full images, just take the "resized/" out of the URI)
However pretty the full screenshot looks like (... I just mean that even if it looks like the second monitor is working), the monitor remains blank.
Using arandr (xrandr's gui), it is exactly the same result. I might be doing something wrong (almost certainly I am ) (EDIT: decided it was a good idea to show what I did with xrandr).
In /home/<myuser>/.xinitrc my file looks like this:
#!/bin/sh
# ~/.xinitrc
# Executed by startx (run your window manager from here)
xrandr --output VGA-0 --mode 1440x900 --pos 1600x0 --rotate normal --output LVDS --mode 1600x900 --pos 0x0 --rotate normal --output HDMI-0 --off
if [ -d /etc/X11/xinit/xinitrc.d ]; then
for f in /etc/X11/xinit/xinitrc.d/*; do
[ -x "$f" ] && . "$f"
done
unset f
fi
exec ck-launch-session startkde
# exec gnome-session
# exec startkde
# exec startxfce4
# ...or the Window Manager of your choice
The laptop's model is Toshiba Satellite L775d. I'm not sure what other information should be required in this situation, but I will be loving to give anything that isn't compromising
Thank you!
(PS: so far Arch has treated me nicely let's see for how long)
Last edited by Mamsaac (2012-03-16 12:24:27)

Thank you for your response!
# xrandr
Screen 0: minimum 320 x 200, current 3040 x 900, maximum 8192 x 8192
VGA-0 connected 1440x900+1600+0 (normal left inverted right x axis y axis) 410mm x 256mm
1440x900 59.9*+
1280x1024 75.0 60.0
1280x960 60.0
1152x864 75.0
1024x768 75.1 60.0
832x624 74.6
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
LVDS connected 1600x900+0+0 (normal left inverted right x axis y axis) 382mm x 214mm
1600x900 60.1*+
1440x900 59.9
1280x854 59.9
1280x800 59.8
1280x720 59.9
1152x768 59.8
1024x768 59.9
800x600 59.9
848x480 59.7
720x480 59.7
640x480 59.4
I wondered the same. I initially only used KDE for it (that's how it worked in other distros, but I'm guessing Fedora and Kubuntu have way more stuff on top). I moved to xrandr later after searching for options and I did select "Ignore" when KDE asked me to configure and just went ahead with xrandr. The same still happens.
Thanks, I hope I gave the right information.
EDIT: Adding some extra information. I tried rebooting with the CRT cable connected. When the kernel initiated its loading, the messages only appeared on the external monitor. It was afterwards (it was pretty quick, but I will assume it was when radeon's modeset hit) that the external monitor went blank again and, in that situation, the laptop's monitor went blank (so none of the two monitors worked... and I was so hopeful!)
Last edited by Mamsaac (2012-03-16 12:14:51)

GS70 Stealth Pro Crashes when using external monitor..

Hi Guys,
I just bought a GS70 ghost pro a few weeks ago and have been loving it, no problems, running Battlefield 3 and watchdogs..
However I just bought an external monitor, Asus VG248QE, when i connected it via display port and tried to play Battlefield 3 on the external monitor the laptop crashed - both screens blank- fan on- power button went orange- had to hold down the power button to reset.
Tried it again, opened Bf3 in window mode, put it on external monitor, went to full screen - it played ok for a few minutes then the laptop crashed again..
I had played bf3 no problems on the laptop screen previously.
Anyone got any ideas what might be going on? I'm new to gaming on pc so I'm a bit lost, any suggestions would be welcome.
Thanks,
Dan

Which nvidia driver are you using? (latest one from nvidia GeFormce Experience or MSI website)
Try to use the one from MSI website and update the latest VBIOS(80.04.F7.00.0C).
http://www.msi.com/support/nb/GS70_2PE_Stealth_Pro.html#down-firmware&Win8.1 64
step by step guide:http://www.msi.com/files/pdf/VBIOS_Update_under_DOS_mode_EN.pdf
Can you check the CPU and GPU temperature under two situation? (1. when running without external monitor 2. using external monitor)

Flashing white/green pixels on external monitor

Hello everyone, I just purchased a 15" MBP with the hi-res antiglare monitor. I upgraded from a black Macbook, which was connected to my 24" Samsung monitor with a Displayport to DVI adapter. When I bought the new MBP, I also bought a new miniDisplayport to DVI adapter. I just now hooked up my MBP with the new adapter to the Samsung monitor and there are/were two issues.
1) When I imported my photos off of my DSLR camera, I noticed green flickering pixels stuck on the images. These pixels moved and flashed with the image, so I know they weren't dead. When viewing those images on my regular 15" MBP monitor, those pixels were not there. They were only on the external monitor. I thought this may be an issue with my DSLR/image import, but then I noticed random purple/green pixel artifacts on an ad on Facebook as well.
2) I reset the NVRAM, flipped the DVI cord out and around, and reconnected it. Now, the green pixels do not seem to show up BUT there are now tons of tiny white pixels flashing across my entire screen. I disconnected/reconnected the display connector several times, and I was able to recreate #1 once. I haven't bena able to again.
I reconnected my old Macbook with the old adapter to the monitor and there were none of these issues.
What might be the problem? I can't capture the pixelation effect on screen capture.
I'm thinking its either:
An issue of Mountain Lion
My Macbook Pro's software
My Macbook Pro's hardware
The miniDisplayport adapter.
Thanks,
-Max

Having the exact same issue. I'm getting the problem on my LG Flatron E2742 external display, from a Thunderbolt to HDMI out from my 2012 MacBook Pro running Mountain Lion.
The issue began yesterday when I connected my MBP to a HDMI Projector. I noticed, via the projected image, the beginning of the dancing white/green pixels. What's really weird is that when I connected my MBP back to my standard LG External display, the dancing white pixels were still there!
MAYBE it's something that happeend to my thunderbolt to HDMI cable in the process? Haven't experimented with another cable to confirm this. BUT, something tells me it's actually software related, because when I first plugged in my external display this morning, it began flickering/staticing/spazzing out like CRAZY. After some poking around and forums, I eventually changed my display color profile and it went back to normal, EXCEPT for the dancing white/green pixels.
Any words of wisdom out there about this situation would be much appreciated.

White screen, but you could get the display via an external monitor.

Hi,
A few weeks ago, my Macbook pro(A1212) stopped displaying. It only showed a white screen, but you could get the display via an external monitor. A friend looked at it and we discovered a burnt Mosfet (SI3443DV) which was item Q9400 on the motherboard. He went and changed it but it only displayed for less than 5 minutes and it went back to the white screen. would you please advice on what to do since i am not in a financial position to take it for repairs at the apple store?
Joe

Forget it.
1: If it was tampered with, then it doesn't qualify for warranty or AppleCare.
2: Repairing it will incur a new expensive logicboard, because that's how they do things. Swap parts out.
3: No money, means no Mac.
Sorry. We don't do hardware repairs here.

I have a late 2008 white macbook. I have a mini dvi to hdmi adapter, and a hdmi cord. My cannot get my MB to detect an external monitor. Nothing happens when plugged in. Also, my display settings does not have an option for mirroring or arrangment tab

I have a late 2008 white macbook. I have a mini dvi to hdmi adapter, and a hdmi cord. My cannot get my MB to detect an external monitor. Nothing happens when plugged in. Also, my display settings does not have an option for mirroring or arrangment tab

Yeah, I'm having the same exact problem - It seems that the thunderbolt minidisplay port is only able to output the analog VGA signal, not the digital signal to support DVI and HDMI. This is a bug that came up after installing 10.7.1. I bought my macbook air with 10.7 on it, upgraded it to 10.7.1 as soon as I got it, so I have never been able to use hdmi or dvi with my macbook air. This is an extremely frustrating problem for me, I used HDMI on a daily basis with my PC. I have spent many hours at the genius bar running diagnostic tests so Apple can get as much information as possible to create a fix for this problem. I have been emailing tech support for 3 or so weeks now, they keep saying that they are working on a fix and it should be out soon, but 10.7.2 has come and gone and I still have no HDMI functionality with my MacBook Air!

IMac 27" flashes to white on startup, chimes, then goes to a black screen. It works fine on an external monitor. Any ideas how I can fix this?

I've got a late 2009 iMac 27". When I start it up, it chimes and makes all the normal sounds. The screen flashes white for 2 seconds, then goes black. The iMac starts up (if I use an external monitor, it works fine) but the screen remains black.
Weirdly, if I start it up on Bootcamp as a Windows machine, it flashes white, then flashes briefly a few seconds later on the Windows logo, then goes to black.
I've reformatted the hard drive and performed a clean install of Lion. I've got some Apple knowledge, so I've taken the front bezel off and checked for loose connections. Everything appears fine. All 4 diagnostic lights are on on the logic board.
I'm stumped. I don't want to splash out on a new LCD screen if it's the inverter or something else that's the problem
Any ideas welcome!

Ah. I'm not able to run the hardware test because it only works on the main screen. There's no obvious way to switch to an external monitor when AHT is running, which is ridiculous if the hardware fault concerns the screen! The problem isn't with the backlight - there is no dimmed image on the screen, it is just off.
I'll just have to use it with an external monitor, I guess - which defeats the purpose of buying an iMac!
Thanks for your help, though.

My MBP recently started logging itself out. I narrowed the problem to the external monitor which is connected with a Thunderbolt adapter. When I disconnected it, the problem went away.

My early 2011 MBP laptop (OS Yosemite 10.2.2) recently started logging itself out. I narrowed the problem to the external monitor which is connected with a Thunderbolt adapter. I installed Thunderbolt firmware update 1.2, that did not correct the problem. When I disconnect the external monitor, the problem went away. Is there something I can do to be able to use the external monitor again?

Try Function F1

I think I have blown out my USB ports. Plugged eternal drive to USB port; drive also had an AC plug which I plugged in. Screen went white; unplugged external drive (both USB and AC plug). Restarted MAC Pro. Everything came back except USB ports

I think I have blown out my USB ports. Plugged in an external drive to USB, but drive also had an AC connection which I connected. Whole screen went white; unplugged external drive (both AC and USB) and shut down MacPro. Restarted and everything came back except access to USB ports. Have tried to reset PRAM and SMC. No success. Have I blown out the electronic circuitry to my USB ports?

Thanks for the response, but ironically enough, I feel really stupid after posting that because a couple minutes after posting that my DELL mouse started working again, but I honestly don't know how long that'll last. After it started working again, I tried switch which port it's plugged into again, and the other one (the one closest to me) still isn't working. If it stops working again (which it probably will), I'll definitely take it to the Apple Store. But, for some reason almost every time I take a device to the Apple Store, it fixes the problem itself when I get there, and then stops working after I leave (like just now.)
That's happened a couple times, like when my computer was heating up alot, and when my phone's sound kept shutting off by itelf.
Anyways, I want to keep this discussion up just because I know it'll stop working soon. But, yeah, I was planning on taking it to the Apple Store anyways, but I think the earliest I can is probably Saturday or Sunday, so I'll do that then.
Thanks for the response!
Scott

Flashing white spots on external monitor...

Hi! I have a new MBP with Intel HD Graphics 4000. I also have a late 2010 MBA that I connect to an external monitor for a larger screen. The problem is when I connect my MBP the same way, I get flasing white spots all over the screen on the external display. I have ruled out the cable, because it works fine with the MBA. The external display is brand new and supports 1080p and looks great with my PC, MBA, and anything else I hook up. Is this a problem with my new MBP? Is there an issue with the graphics card? Any help would be appreciated!!

It's against Apple TOS to speculate about an issue like this. My best advice is to call AppleCare and file a service issue.

Thinkpad T60p with Win XP - Lost color on external monitor (only black & white)

Hi, I have a ThinkPad T60P, and a couple of weeks ago, I lost color on my external monitor (connected by VGA cable)
I have done a lot of testing, and found a couple of strange things around this:
* when using docking station with two monitors, only monitor nr "1" inCatalyst Control Center shows colors, but not "2".
* When using external monitor (or projector) I don't get color
* When showing video on the external monitor, color works(!) This is only on some type of videos, I think. Flash videos (ie. YouTube does not show colors)
* When getting a bluescreen, the external monitor displays bluescreen with colors. When rebooting after bluescreen, colors were working while booting (windows logo with colors), but as soon as XP was up, colors were gone(!)
* I have tried updating to the latest graphics driver (79d533ww.exe), and all the settings in Catalyst Control Center / Control Panel
As a result of these findings, I beleive it must be a software problem, but since upgrading the drivers didn't work, I don't know what to try next.
I see also that there are other people experiencing the same problems, but I can't find any solution to this problem.
Re:
http://forum.notebookreview.com/showthread.php?p=3597258
Hope someone can help me here!
Best regards,
pmlovold

Cats seem to have a strong affinity for that display mode — remarkably often we hear that they've typed in the correct keystroke combo for it, and yet they never seem to set it back to normal after using the computer. Not very considerate, but you know cats: consideration isn't part of the package.

Laptop monitor no longer works, and neither does external monitor

My laptop has always had a severe problem with overheating when running even the simplest games, and the fan area in the upper left consistently reaches temperatures unbearable to touch. Using software to find internal temperatures I have found that the CPU usually is about 100 degrees celsius just standing by, and reaches upwards of 130 degrees Celsius when running games. If it ever went much past 130 it would usually shut it self down so it wouldn't fry, but recently the heat seems to have caused the hinge in the area to become ridiculously stiff to the point where the tension cracked the case. This caused the hinge to come out of the casing which placed strain on the cable running through the hinge into the display. I eventually managed to get the hinge back inside the case after it being outside for a few weeks or so, but it didn't seem to matter because a few days later the monitor stopped working completely. It was now just white instead of displaying picture and my first thought was to use an external monitor temporarily but that didn't work either. When booting up the computer the power and fan turn on and the wireless light turns on, first orange then white, and the caps lock key will turn it's light on when pushed. I'm not sure why an external monitor won't work but if anyone can at least help me get that working if not the laptop screen it would be awesome, thanks!

@ckurtz22 ,
I have brought your issue to the attention of an appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post personal information (serial numbers and case details).
If you are unfamiliar with how the Forum's private message capability works, you can learn about that here.
Thank you for visiting the HP Support Forum.
I work for HP. However I speak only for myself, not for HP nor anyone else

MBP does not detect external monitor on DVI connection...

(2007) MBP C2D 2.33 15", OSX LION 3gb. Worked fine till about 3 days ago (right after installing the last round of updates).
My external monitor now fails to connect on DVI cable. Since it also has VGA, I was able to test this way with a DVI to VGA adapter and that worked perfectly, but the vga gives a lower resolution. Having estalished that the graphics adapter and the monitor were okay, I looked for other issues.
Starting the MBP in clamshell mode, it found the monitor on DVI. Then restarting normally, it all worked fine, UNTILL the MBP went to sleep. when it awoke, no external. Plugged, unplugged, trashed display prefs, nothing, though it does still work via DVI-VGA.
I don't think having to clamshell everytime is a workable solution, but I NEED MY DESK SPACE!
Any thoughts?

Yesterday, having had the problem become far worse, I too tried PRAM/NVRAM clearing (SMC reset so many times I can't count them). Then, in desperation I purchased TechtoolPro 6 and ran it. Everything s working well now, and in fact the video issue cleared up while techtool loaded, it didn't even wait for me to run the thing!
More: About 3 weeks ago, I made a HardDrive image from an older white macbook so I could repair its hard drive. After doing that job, I (thought I) deleted the image from my MBP, but the disk still showed 80Gb used that wasn't before. So while I thought I had 130GB free, I was only showing 50. After running the directory rebuild, I now have 175gb Free! So the directory was keeping track of 95GB that WASN'T there! I suspect this had something to do with my problems. Then running the Defrag and Optimization routines, my 2007 MBP is running like a brand new machine. Other things that had been buggy (like the right click on my magic mouse) are now working like they should.
Recommended highly!

External monitor makes both screens flash blue

Hi, I have a 2008 aluminum macbook, and I've been using it with an external monitor hooked up through a minidisplay port to DVI adapter. It's worked great until just the last few days. Now whenever I have the external monitor plugged in both screens will randomly flash blue (like when hooking in the monitor) every 10 seconds or so. I tried changing the refresh rate to 60 instead of 75, and that seemed to help for a little while, but now it just seems to be getting worse and worse. Any ideas?

This may help some of you. My screen appeared to "move" whenever I moved the mouse and jitter when I placed it in some parts of the Dock. To fix my problem I went into Universal Access in System Preferences and turned Zoom off. Sometimes I use the White on Black setting to make text easier to read and the keyboard short cut for that is almost identical to the Zoom one which will create some really goofy effects on the screen.

Display problem when using external monitor

Got any ideas about this? My friend has extended his imac (intel) display to another monitor using the mini dvi to vga. He can't see a thing on the imac but the system is up. He see a faint outline of the windows on the imac but its really dark. The extended monitor is showing fine. He plugged it out, shut it down and all of that but the screen just does not display.

Same problem. I have always extended my monitor though. Today I went to lunch... came back... no display... I am using it right now though, I finally was able to figure out how to get the external monitor to act as a clone. The support guy said there wasn't a way to do this, but if you hit option F7 it will switch to clone, then you can go to the display settings and set the external monitor to have the white bar.
So its all functioning, but the laptop lcd is blank. Actually its just a white screen, which apparently is 'blank' though to me blank is black. It flickers and weird outlines show here and there.
The support guy was insistant it was a boot issue. But it can't be, everythign else works. Everywhere I look, there are people asking, and nobody from apple answering. He is sending me a box to send to support. 7-10 day turnaround... 7-10 days that I am going to be out of the water.
The support guy's computer crashed twice while I was on the phone with him.

External Monitor Went White

Similar Messages

Maybe you are looking for