Display flickering after switching laptop on, display flickering after switching laptop on

after switching on my laptop the screen starts flickering.

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MacBook Pro thunderbolt show flickering with 24-inch Cinema Display

Hello,
I see other people are having this problem of the cinema display flickering and going completly black for a couple of seconds.
Is this on Apple's radar? Is there a fix pending?
From what I can tell the problem was first reported 7 weeks ago.
thx
Lach

I am having the same issue. My screen will flicker at a steady pace about once every 3 to 5 seconds, the flicker its self is maybe half a second long tops.
Needless to say this is completely annoying! Was not a problem until today, I thought I was lucky to have avoided the horror stories of Thunderbolt display problems. This is another thing I can add to my growing list of annoyances with a $2400 computer. It is sad really. I can hook up an Asus netbook to my 1080p display with no problems but somehow one of the fastest laptops available has issues being hooked up to an external monitor.
I want to love my MacBook but unfortunately it has been annoyance after inconvenience after just plain silliness with this computer.
Please fix this Apple.
The monitor I use is a 23" Samsung 1080p display through a Thunderbolt to DVI connection.
10.6.7 Build 10J4138

Laptops forgetting startup disk after using external displays

Hi All,
Wonder if anyone has had a similar experience or any ideas.
I'm administering approx 650 laptops in an educational environment which were imaged with deploy studio in the summer and we've got a weird quirk going on: Sometimes when students or teachers use an external display that causes their screen resolution to change, the next time they restart their laptop it will not boot up. I can't recreate this at will but it is happening on a semi-regular basis. On the older white macbooks the laptop will display the boot logo but never show the little spinner than indicates that the start-up is progressing. On some of the newer macbooks, the screen changes to some colored lines. In either case, the solution is simply to option-boot the laptop, and manually select the boot drive. After logging in, manually switching the screen resolution once will cause the laptop to boot normally next time. It's an easy workaround but we use an EFI password so right now the tech desk has to handle this. We see the problem on 10.6.4, 10.6.5, and 10.6.6
I had read that settings for both the start-up disk and screen resolution are present in the nvram, so I'm wondering if I'm seeing a situation where connecting an external display is resulting in some corruption of this.
Looking through the logs I'm not seeing anything that looks out of place. Is there a specific section of the logs that anyone would recommend a more in depth look at, and if so what is the command to make that log as verbose as possible temporarily?
It's definately a quirk in the image or the imaging process so it's not worrying long term, but it'd be great if we could patch it for the remainder of the current school year.
Thanks in advance for any feedback!

Time Machine does a pseudo-archival backup.
It will until space prohibits it:
1. Backup every hour
2. Backup every day
3. Backup every week
4. Backup every month.
When space prohibits it, it will drop the oldest of each of 1,2,3,4 in sequence to make room for additional backups.
If you stop your Time Machine backing up, and only backup your existing Time Machine archive folders to DVD, or another external hard drive, you can keep older backups of data off your Time Machine backup drive, while giving it room to make more backups. If you clone your data*:
http://www.macmaps.com/backup.html
Then you can be sure what's on the original is on the destination drive, and keep that as your backup.
Design your backup system to suit your needs. And note, Mac OS X does have an arbitrary 85% full point where it starts to break down and get slower, and have other issues*:
http://www.macmaps.com/diskfull.html
If you find you reach that point a lot, you may want to increase the size of your internal drive.
- * Links to my pages may give me compensation.

R6950 Display Twin Froz II OC 2 GB flickers with multiple displays

Hi guys,
This is my situation, I have a 3 monitor setup (27" SA850 PLS) not running on Eyefinity, simply using extended desktop and playing only on one monitor. 2 of the monitors are connected to the card using Display Port and another one using the Dual DVI connector. My resolution is 2560x1440 on the 3 monitors.
When I play a game (i.e. SC2) one of the side monitor flickers, If I'm on normal 2D everything works fine. The one that flickers is connected using the display port.
What I have tried:
* Installing latest Catalyst (12.1).
* Swapping monitors.
* Swapping cables.
What I found out:
It is only happening on the monitor connected to the second display port on the card. Disregarding of what cable or monitor I use, If it is connected to the second display port it will suffer flickering when I go into a game. Remember the one suffering the flickering will not be the one I use to play which is connected on the dual DVI port.
Even more interesting, flickering WILL STOP, if i reduce the resolution of the monitor connected to that specific display port to 1280x1024.
I even tried all the following combinations where A, B, C are monitors. Min resolution is 1024x768 and Max Resolution is 2560x1440. C will be the monitor connected to this specific display port.
1. A Resolution Max
B Resolution Max
C Resolution Max = Flicker
2. A Resolution Min
B Resolution Min
C Resolution Min = No flicker
3. A Resolution Max
B Resolution Max
C Resolution Min = No Flicker
4. A Resolution Max
B Resolution Max
C Resolution over 1280x1024 = flicker
5. A Resolution Min
B Resolution Min
C Resolution over 1280x1024 = Flicker
6. A Resolution Max
B Resolution Max
C Resolution <= 1280x1024 = No flicker
I have no idea why is this happening, I really want to avoid sending the card in, I cant be without the card so if someone has some crazy ideas Im all in for trying them.
Thanks in advance.

Okay, received my replacement card from Amazon on Monday, finally had a chance to install and test the new card today. So far, no artifacts that I can see. I tested in Kombustor, Amnesia: Dark Descent, a video in VLC, GIMP, and of course my Web browser. Everything looks fine, so I'll just assume that the first card I received was a bad one. Hopefully things won't change with the new card (I do not plan on overclocking it), but I'll be keeping my old Radeon 4870 just in case.
I did notice one thing that seemed odd in Kombustor though. When it did the combined test at the end for Kmark, there were constantly shifting vertical lines on the screen. Seemed to be part of the test (like old newsreel footage?), and didn't show up anywhere else. Anyway.

I have using I phone 5c after connected with my HP elite book 6930p laptop, Automatic software driver is not deducting, and display Windows found driver software for your device (MTP USD Device) but encountered an error while attempting to install it.

I am using I phone 5c after connected with my HP elite book 6930p laptop, (Installed Window 7 32 bit). automatic software driver is not deducting, and display Windows found driver software for your device (MTP USD Device) but encountered an error while attempting to install it.
I did install itunes and update also. but the above problem still same.
Kindly give me solution of it. awaiting.
Regards
Abbas Kader

try it with another computer to check if it shows up
if so
uninstall all apple software
reboot
use regedit to search and remove all itunes keys
reboot
resinstall apple software
if non of that helps then try another cable
if that don't help could be your phones connector is damaged

Macbook Pro dark screen after disconnecting from Cinema Display

Dear all,
the issue I am having:
- after disconnecting from Cinema display (having first put my Macbook Pro in "sleep" mode) I just ca't make the Macbook pro scren show anything....black display
- but is it really asleep? NO!!! It just STILL believes it's connected to the Cinema Display
That's what I though was happening, so I thought: "if I now plug in the thunderbolt-to-VGA dongle that I use for the videoprojector then the screen might come back... and.... Voilá! It comes back, BUT starts flickering until in the end it just dissappears....
I can reproduce the error all the time. Worse than that: a reboot does not help at all.
Looks like there is an internal hardware switch that must be left "engaged" and then the Mac just believes it is connected to an External screen and sends the signal though the thuderbolt port instead of through the screen!!!
WEIRD error/bug or whatever!!
I have no idea how to make this reach the Apple guys.... I tried to report a Bug but they asked me to join in as Apple developer which I just can't do (for working issues).
Can anyone tell me if they have had this problem, and whether Apple is taking care of it?
(this reminds me of an issue with an internal switch with the headphones in my old MacBook Pro.... after disconnecting the headphones, the internal switch was not being disengaged, so sound would NEVER come out as it was being sent to the headphones instead of to the speakers... Same problem here but with the Image??? :-((( )
Thanks a lot.
BTW: here go my Mac characteristics:
Mac OSX 10.8.2
Model Name:          MacBook Pro
Model Identifier:          MacBookPro10,1
Processor Name:          Intel Core i7
Processor Speed:          2.6 GHz
Number of Processors:          1
Total Number of Cores:          4
L2 Cache (per Core):          256 KB
L3 Cache:          6 MB
Memory:          8 GB
Boot ROM Version:          MBP101.00EE.B02
SMC Version (system):          2.3f32
Intel HD Graphics 4000:
Chipset Model:          Intel HD Graphics 4000
Type:          GPU
Bus:          Built-In
VRAM (Total):          512 MB
Vendor:          Intel (0x8086)
Device ID:          0x0166
Revision ID:          0x0009
gMux Version:          3.2.19 [3.2.8]
MacBook Pro:
Vendor Name:          Apple, Inc.
Device Name:          Macintosh
UID:          0x0001000D11C0EF80
Firmware Version:          11.1
Port:
Status:          Connected
Link Status:          2
Link Controller Firmware Version:          0.11.4
Port:
Status:          No devices connected
Link Status:          7
Link Controller Firmware Version:          0.11.4

Sometimes I experience the same after disconnecting my 24" display (in seldom cases, the mouse cursor is not painted correctly, as well).
Can you check - when it happens - if in System Profiler > Hardware > Graphic > Quartz Extreme is listed as 'supported'. I found it to be 'not supported' when the scrolling and display behaves strangly. Also the Menu Bar is not transparent any more.
Next to rebooting, logout and login again fixed the issue for me. But I am also looking for a better fix/explanation.
marcus

External monitor works only works when laptop screen displays

Hi there, I just connected a different (newer, but not brand new) external monitor to my T61. When I toggle screens (fn-f7) the external display gets no signal in the 'external display only' position, but displays beautifully in the 'both' position. This never happened with my old monitor. I would like to use the external display and not have the laptop screen display. Any ideas? Many thanks, Ellen

H
Try this:
After connecting external monitor, press win key+p and thrn choose projector only.
Have a nice day
Ishaan Ideapad Y560(i3 330m), Hp Elitebook 8460p!(i5-2520M) Hp Pavilion n208tx(i5-4200u)
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PulseAudio stops sounding when I switch to other display (Ctrl+Alt+F1)

Hello.
When I am playing any sound and I switch to a display (Ctrl+Alt+F1, Ctrl+Alt+F2...) where I have not loged in or a am not loged with my default user account, the sound stops, and when I switch back, I continues sounding.
Anyone have an idea of what could be causing this?
Thanks.

Thanks for the reply.
Is there a way to change that behavior?
Edit: After killing console-kit-daemon, sound works on all displays, but I think that it is not the best solution.
Last edited by eduardosm (2011-12-02 21:29:57)

User switch messes up Display Profiles

I have a problem that's cropped up since I upgraded to Tiger.
When I first startup or restart, when I open the Displays preferences I can go to the Color tab and select any of the Display Profiles I've created for either of my two monitors (Apple 17" 1705 CRT and ViewSonic VE150 LCD), or press the Calibrate button and the calibration application comes up. When I switch over to my other user account, I can do the same.
But, once I switch back to user account #1, both screens get noticeably washed out, and when I select the Display prefs and go to Color it's defaulted to "Generic RGB Profile" for both monitors. I'm not able to select any of the other profiles in either window, and when I press Calibrate I get the error message "Can not calibrate the display - the factory profile for the display could not be found". User account #2 behaves the same way from that point, also. The only way I can restore functionality is to restart, at which point the Display color prefs work properly again, but only until I switch user accounts back and forth...then it "breaks" again.
I've repaired permissions several times, run disk repairs, every maintenance thing I could think of but nothing fixes this problem. How can I get this straightened out?
Thanks,
Michael

I came here looking for an answer to this exact problem (it was driving me nuts)... I only use fast user switching when I have visitors, and this is the first time I've needed the feature since upgrading to Tiger.
Fortunately, I think I have found the solution after messing around for a bit (it worked for me anyway). I simply gave access to all of the system preferences (which it didn't have before) to my extra account. After doing that, when I switch back to primary account, the displays stay the way they should. I also found that this problem was affecting the sound on my computer as well. Everything seems to work fine now though.
Hope that works for others as well...
1 Ghz Tibook Mac OS X (10.4.6)

ARD on my laptop not displaying both monitors on my desktop

I'm running ARD 3.2 on both my Macbook Pro laptop, and Macpro desktop. Both are running the latest version of Leopard. My desktop has dual monitors, and it seems before I upgraded to Leopard, ARD on my laptop would display BOTH of my desktop monitors (scaled down, of course). However recently, it stared to only display the desktop's primary monitor, and not even detect or display the second. I've been pulling my hair out trying to find a relevant setting, and searching the forums for someone with this issue. Does anyone know what's going on? Please let me know. Thanks in advance!

For opening your domain file in Lion or to switch between multiple domain files Cyclosaurus has provided us with the following script that you can make into an Applescript application with Script Editor. Open Script Editor, copy and paste the script below into Script Editor's window and save as an application.
Just launch the applicaiton, find and select the domain file you want to open and it will open with iWeb. It modifies the iWeb preference file each time it's launched so one can switch between domain files.
do shell script "/usr/bin/defaults write com.apple.iWeb iWebDefaultsDocumentPath -boolean no"delay 1
tell application "iWeb" to activate
You can download an already compiiled version with this link: iWeb Switch Domain.
WARNING: iWeb Switch Domain will overwrite an existing Domain.sites2 file if you select to create a new domain in the same folder. So rename your domain files once they've been created to something other than the default name.
OT

Miix 2 10" led diod on the switch filter between display and edge frame

Hello,
i have Lenovo Miix 2 10" and i find out, that indicative led diod on the switch filter between display and edge frame of tablet when is the dark.
It is obvious in the night and tablet is moderately incline...
https://onedrive.live.com/redir?resid=2193765AA1BD42F1!7232&authkey=!AJ7TZCTfNtVztuI&v=3&ithint=phot...
Is it reason for reclaim?
Thanks
sg

Hi chuck72352,
after you have sorted your data, you can use the InRange Function. Combined with a "search 1D Array" you'll get the range you really want.
Mike
Attachments:
ArraySubset.PNG ‏25 KB

HT1477 When i disconnect my iPod 2nd Gen from my laptop, its display turns off and working freezes. Please help me.

When i disconnect my iPod 2nd Gen from my laptop, its display goes off and working freezes. Please help me.

The computer freezes? There may be something wrong with the USB port. If the laptop has more than one port, does this happen on any port? If you are disconnecting the shuffle cable from the computer, does it make any difference if you disconnect the shuffle at the other end of the cable first, then disconnect the cable from computer? Or if you currently disconnect the shuffle from cable first, try it the other way.
You may be able to work around this problem, if you get a self-powered USB hub. Something like this one
http://eshop.macsales.com/item/NewerTech/USB2HB7PRO/
There are many choices, but be sure to get one that has its own power supply. You can leave the shuffle cable connected to the hub, and connect the shuffle to the hub, instead of directly to the computer. This may provide a "buffer" for whatever is causing your laptop to shut off when the shuffle is disconnected. Since the hub has its own power supply, it will not rely on the computer for power to re-charge the battery.

MacBook Pro scrolling choppy after disconnecting from Cinema Display

Hi, I keep my 2.5 GHz 4GB RAM MBP in clamshell mode most of the time, connected to a 30-inch Cinema Display. When I pick it up and open it, scrolling in every application is super choppy and slow, and won't correct unless I reboot the computer. This is aggravating. Anyone have a fix? Thanks in advance!

Sometimes I experience the same after disconnecting my 24" display (in seldom cases, the mouse cursor is not painted correctly, as well).
Can you check - when it happens - if in System Profiler > Hardware > Graphic > Quartz Extreme is listed as 'supported'. I found it to be 'not supported' when the scrolling and display behaves strangly. Also the Menu Bar is not transparent any more.
Next to rebooting, logout and login again fixed the issue for me. But I am also looking for a better fix/explanation.
marcus

After installing Mountain Lion my MacBookPro crashes after disconnecting from Cinema Display

Ever since I installed Mountain Lion on my 15" MacBookPro (early 2011 first with Tunderbolt connector) it crashes after disconnecting from Cinema display (this Cinema does not have Thunderbolt but mini display port). It woked fine under Lion.
This crash occurs in following situation:
MacBookPro is in closed clam shell operation. When Cinema display is still connected, I put MacBookPro into sleep. Then I disconnect Cinema display mini diplay connector from Thuderbotl port.
When I get home and open MacBookPro it is in deep kernel crash.
It happens every time.
Any ideas how to fix this?
Thanks
Rich

You can bypass GateKeeper.

I have a Samsung HD TV and I purchased a Mini Display port to HDMI Adapter today. For some strange reason I get no display on my HD tv. I even tried switching a few HDMI cables and nothing popped up. I made sure my computer was updated. Help pls

I have a Samsung HD TV and I purchased a Mini Display port to HDMI Adapter today. For some strange reason I get no display on my HD tv. I even tried switching a few HDMI cables and nothing popped up. I made sure my computer performed all software updates, and I even tried calling Apple Support. They just told me to keep trying different hdmi cables and see if anything pops up. Does anybody know what the problem is? My HDMI cable is from "rocketfish" also my display port is too.

You may have the screen refresh rate set higher than the TV is generally able to track reliably. It may be able to get there most times, but occasionally loses sync because it is out of its nominal range.
I suggest you sit down with the manual for the TV and find out what resolutions at what refresh rates it intends to support through VGA, and make sure your screen settings are near (or below) those limits.

No virtual desktops in Win10 (please fix)?: Dangerous game promoting app switching on different displays as virtual desktops

Seems virtual desktops are overpromoted - and in fact not about virtual desktops (changing content on the desktops). The socalled virtual desktops are right now
no more than app switching on different displays.
Dangerous game again from Microsoft promoting things as something they are not.
Virtual desktops are already a well-defined concept - and people will expect the desktop to be able to change content (be dynamic) ... the data and launching programs for documents, different backgrounds.
... but as others may already have stated in other threads: (Right now) Windows 10 does not contain virtual desktops/displays/screens. Not at all.
A skeptical hypothesis - hopefully it is not so, and we will be able to work with data in a valuable way. The data is on the desktop anyway today - so why not make it real virtual desktops? I simply do not understand the decision.
So here comes the skeptical hypothesis - it's not a Steve thing. It's Microsoft still looking for that next revamped business model to finance their future.
So the freak kind of virtual desktops (virtual desktops in Win10 a lie?) will disappoint - have already begun to do so - and seems Microsoft is just taken up with inserting an additional intermediary step towards relaunching the appstore and hiding
all the user data in cloud again. Really, hiding the difference between data availability - not making the cloud something MORE but making the local system something LESS. The NEXT BIG thing? So we're going to loose file system, folders and the general ability
to form concepts of our own - and get a freak system? The NEXT BIG thing - data integration? Because data was hidden away now. Also in local systems. Artificially creating new problems - rather than solving new interesting ones?
We need to able to pin the data onto the display whether desktop, start screen, what ever. It's also on the feature requests. Desktops/Start Screen/Original displays for workflows/whatever actual starting points on login ... needs to have
more links than application from appstores and application containers linked to them.
If any more app (read: not cloud, data) but appstore, appstore, appstore
application containers hiding the data away comes into the UI I am going with Linux. I am that close ...

A better name would be Virtual Display Layouts ... Virtual Screens ... Virtual Start Screens (please let us be able to pin files/folders to the Start Screen, a requested voted for feature for Windows 10).
You see, go back and read the topics for Windows 8 ... you will learn the Start Screen is/was the new desktop - and should have been made virtual.
So please get your act together and stop confusing everything ... and make on coherent system. Drop the Start Screen - and go with the virtual desktop
(put the Start Screen technology into the virtual desktop - and let users pin folders and files there as requested ... both local and in the cloud)

Display flickering after switching laptop on, display flickering after switching laptop on

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