Flickering Monitor

My iBook, which is a few years old, has a flickering problem. The screen is constantly going dark then light.... flickering all the time. I'm not really sure what to do about it, because I'm not within distance of any mac store. Any ideas? Thanks so much!

Hi Somewhat451,
Welcome to Apple Discussions
You may want to try reseting the PMU (Knowledge Base Document #14449, which covers Resetting Powerbook and iBook Power Management Unit (PMU)). Does this happen when you move the screen?
Jon
You may be interested in looking at iBook - Service FAQ
Mac Mini 1.42Ghz, iPod (All), Airport (Graphite & Express), G4 1.33Ghz iBook, G4 iMac 1Ghz, G3 500Mhz, iBook iMac 233Mhz, eMate, Power Mac 5400 LC, PowerBook 540c, Macintosh 128K, Apple //e, Apple //, and some more... Mac OS X (10.4.5) Moto Razr, iLife '06, SmartDisk 160Gb, Apple BT Mouse, Sight..

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[Solved] another flickering monitor problem

Hi,
I hooked a new LED monitor to my laptop via a VGA cable but the sad
part is that the monitor flickers quite a bit. It's not a hardware
problem because I hooked the monitor to a windows box (using the same
VGA cable), and the monitor works perfectly well.
My laptop uses the video card ATI Radeon HD 3670. I'm currently using
the open source driver xf86-ati-video.
Here are a few things I've tried (many of them based from previous
posts) that I didn't have any success: to use the ATI's proprietary
driver (catalyst); to use xf86-ati-video-git; to disable KMS; to check
the output of xrandr (the preferred and the current mode match); and
to downgrade to older version of the xf86-ati-video. My archlinux box is
also upgraded.
I noticed the following patterns in my monitor flickering:
- it only happens with darker colors (no flicker when I open a white
page for instance).
- the flicker is not limited to X. The virtual consoles also flicker.
So I think that means that the cause of the flicker has nothing to
do with Xorg.
- the flicker is vertical.
- The flicker does not occur when I'm at the GRUB menu.
Any suggestion of how I can solve this problem is more than welcome!
Cheers,
Last edited by falsum (2011-06-05 00:39:10)

karol wrote:
falsum wrote:I guess the problem was the VGA port of my laptop.
I'm really glad you solved it :-)
If you want, you can boot a liveCD / liveUSB and see if it has problems with your VGA too. If it runs OK, the problems may be related to your Arch setup.
If you can get another monitor with a VGA connector you can test it too - maybe your laptop is just jealous of the new shiny monitor ;P
These are good ideas. I get the same flickering with the ubuntu live cd but I didn't try with the arch live cd yet. As to other monitors, I still get the same flickering when I use a different monitor with a VGA cable.
I think you're right: my laptop must be getting jealous :-)

Flickering Monitor - WHAT else can I do ...?

A new system and monitor which flickers ...
System: P4 3Ghz 478Pin 800MHz FSB; MSI 6758 i875P board; Corsair 1024MB DDR SDRAM; MSI-FX5600 TD256 card; Maxtor 30GB & Western 120GB drives.
Monitor: Mitsubishi 1998FD Diamond View 19" flat screen.
OS: Win2000 Pro
I got all the latest drivers; tried all resolution settings; removed all speakers and adapters; returned it to the vendor who tested it (albeit with XP and a Ti4600 card) and found no fault with the monitor ...
The flicker varies in intensity and nearly disappears at times; it is strongest in the lower left side corner of the screen ...
Does all this prove that it is a lemon - or is there something else I can try to make it work properly ???
Cheers, Joseph
Canberra

What are you thinking about? Updating the iOS?
Purchasing iOS 3.1 Software Update for iPod touch (1st generation)

FREEZING, FLICKERING MONITOR

Every time I try and play any type of game (on FB or another site), my monitor blinks and then freezes. Any ideas on what's wrong and/or how to fix? Upgraded to Maverick about a month ago, but this is the first time this has happened in the 5 years I've owned the computer. Appreciate any help. Thanks!

Hi Ernestine,
Thanks for visiting Apple Support Communities.
You may find these troubleshooting steps helpful if your display is flickering intermittently:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
No video or no signal, image distortion, "snow," or flickering
Check connections
When using an external display be sure to check the following:
If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
Try unplugging the video adapter or cable and then plug it back in.
If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.
Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.
Reset the resolution
Start by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
Start up in Safe Mode.
From the Apple () menu, choose System Preferences.
Choose Displays from the View menu to open the preferences pane.
Select any resolution and refresh rate that your display supports.
Restart your computer.
Best,
Jeremy

HT1338 Flickering monitor on IMac

Recently had my hard drive replaced due to the recall. Now, on one side, my screen is a bit darker and flickers a bit on the screen. Would this be the new hard drive?

No where in your post did you describe wanting to use Target Display Mode and the OP never mentioned Target Display Mode. Using an external display and Target Display Mode are two totally seperate issues. One is using a dual display Mac, the latter is using the iMac's display as an external display to another computer. One has nothing to do with the other!
Also Apple has been very forthright about what Target Display Mode works with. You assume it's marketing decision and ignore the issue could be technical with Thunderbolt equiped Macs. I don't believe you know enough to know one way or the other and simply unhappy, probably because you did not do your due dillegence.

AT WITS END=PLEASE HELP! Unable to restore; No password; Bluish green-black flickering monitor

Hi all, first time here, and I regret this is so long, but PLEASE bear with me. Having gotten nowhere after roughly 20 hours of labor plus 8 hours with "customer support", I REALLY NEED YOUR HELP!, PLEASE.. I have a Pavillion dv7-4087cl entertainment notebook running Windows 7, Home Premium, 64 bit, Product # wq637ua#aba. In essence, the primary issue is that I'm unable to do anything on my notebook. which includes a Notebook Recovery - the problems are broken down below.
Problems:
1. I noticed that the screen began to flicker, rapidly alternating between blue/green and black. This seemed to coincide with an update that I was instructed to install on 7/19 by rebooting my computer (it was either an HP or Microsoft update). Of note is that there is no flicker when I am in Recovery Manager, Advanced System Diagnostics, or other "fix it" screens.
2. Also, another major problem that keeps showing up is that this machine uses finger swipe technology to log on. I was so taken with the ease of this when I first got the machine < 8 months ago that, to my recollection, I never entered/registered a password. Everything went swimmingly... until now. However, now that I have this problem, I am unable to proceed with several possible remedies because it asks for the unrecorded password.
3. Given the aforementioned, I've been unable to do a Notebook Recovery.
REMEDIES ATTEMPTED:
1. I have run Start-Up Repair with everything being ok, in HP Advanced System Diagnostics I ran the Tune-Up Program and all was well, and the same applies to the Hard Disk Test. As per response to ADG's 7/12/11 post, I followed the directions found there, as follows: 1. insert CD and boot into recovey manager, 2. "Windows is loading files" message displayed, with "Welcome to Recovery Manager' at the top 3. However, I did not see Advanced System Options or System Recovery, but was able to access those somehow during another attempt at a fix 4 Was unable to find "Recover without backing up" or to click on "System Recovery" which was listed but, as noted below, it was not an option I could access/click on. Although the screen said something like "reloading files", as I had my recovery DVD inserted, when that process was done, and the system rebooted, it was back to the blue/green/black rapid flicker. Along that line, I made my own Rescue Disc, and it is only one DVD. In reading others' posts, sounds like I should have at least three discs. Do you think I need to order these from HP?
2. Performed a "Hard Reset" to no avail.
3. I have tried every approach that I could think of (e.g., F8, F11, System Recovery, Advanced Diagnostics, etc.), and that the lack of a password would allow. One thing I noted was that only two restore points were listed. One was dated 7/18/11, it was an automatic resore point, and the "type" was "System". The other was dated 7/19, which is when the problem first manifested, and it said it was an "HTFS" or some similar acronyms, and the type was "install". It was after this install that I noticed the problem.
4. Customer support rep said to do the following: Run Hard Disk Test and, if it passes we know it's not a hardware problem - it did pass. After the test, he said to choose "shut down", but the closest option was "Exit", which I did He told me to turn it off and, while rebooting, press F11 which would yield three columns. All was going well at that point. He said that beneath the "I need help immediately" screen, to select "System Recovery". However, while that was listed, the only option to which I had access was to "Microsoft System Restore". I clicked that, as I had done Many times before and, this time, as with the other times, it was just another exercise in futility.
STATUS: The machine is not even 8 months old and, despite all efforts, it remains broken. I am unable to do a recovery/restore, It appears to be a software problem, and I have no password which prevents many solution attempts, as well as other likely problems down the road. My finger swipe was all that I ever needed up to this point - lesson learned. Thank you so very much in advance, sorry this is so long, and I would Greatly appreciate your H E L P

Hi,
First of all, try the following to see if this will allow you to boot into Windows.
Download the application on the following link and save it to your Desktop.
PC LoginNow
Next, download and install ImgBurn.
Now, download and install 7-Zip. When installed, right click the PC LoginNow download, select 7-Zip, select Extract Files and click OK. Open the newly extracted folder and use ImgBurn to correctly burn the ISO file to a CD. A guide on how to use this is on the link below.
PC LoginNow Guide
Insert the CD into your PC you can't log in to and restart to boot from the disc.
Hopefully this should simply remove your password altogether. Let me know the result of this before going any further.
Regards,
DP-K
****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
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Microsoft MVP - Windows Experience

Envy IPS 27 Monitor - Flickering

Graetful for any advice.
Monitor now started flickering.
Manifests as a black screen that flashes on/off each second with faint short coloured lines (based on the picture on the desk top) around the edge of the screen.
No changes to system/wires/location etc.
Expensive monitor and just out of warranty so hoping that this is fixable.
Many thanks,
AdamS22

Hello @AdamS22,
I understand that your HP Envy 27-inch IPS monitor has begun flickering and you are seeking assistance. I am providing you with an HP Support document: Display Quality Issues, which has steps within to resolve a flickering monitor. If the document does not resolve your issue I am also providing you with some steps you can try below:
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
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!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
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Dual monitor setup - primary monitor blank upon startup

Hello -
This has been vexing me for some time now. I've seen hints of this issue from other people but never the exact same circumstances and never do I see a definitive answer.
I have a dual monitor arrangement on my 8 core Clovertown (first generation) Mac Pro. After shutting the machine down, when I start it back up, the primary monitor almost always flickers very quickly then goes black while the machine boots, and the secondary monitor kicks on. Note - this never happens on restarts or waking up from sleep mode; just after starting up after completely shutting the machine down.
Exact specs are:
The afore mentioned first-gen 8 core Mac Pro (spring 2007), combined with an ATI 4870 graphics card, with the 24 inch Cinema Display LED serving as primary monitor (the one that's useless upon starting up), and my older 23 inch LCD as secondary display. Also worth noting - I'm aware the ATI 4870 is not officially supported in this generation of Mac Pro, however there were so many reports on the web of it working that I did the swap-out myself, and ended up getting the 24 inch LED since I then had the Mini Displayport on the back of my machine.
The only way I manage to get my machine working after starting back up is to restart it several times - literally up to over a dozen attempts sometimes, before the primary display finally does start functioning and I can begin working as normal.
Because there were many reports of the ATI 4870 working fine with this Mac Pro and word of other flickering monitor problems, I thought I'd ask despite the graphics card not being officially supported. Any ideas on how to remedy this problem so I don't have to keep restarting over and over before both my screens eventually work?
Thank you in advance.

So I have the same issue. I run dual 23" Apple Cinema Displays. For a while now the main monitor has had trouble waking up. I have also been unable to put the Display to sleep from the power button on the display. The other monitor seems to go to sleep fine. So when I get it to sleep and it won't start up, I usually restart and everything is fine. Today I can't get that monitor to come up at all. In addition, I have swapped ports on the video card switching the order of the monitors, no change. I also checked in my System Preferences>Display, and the system is still recognizing two monitors. So I am guessing my issue is related to the Display itself. What can be done at this point?

Hp 2509m

Experiencing similar problem as other posts, screen flickers/flutters, at start up and getting worse.After 3/5 minutes it goes normal . Very disappointed with H.P. they want nothing to do with it as the warranty run out. Bought it at Future Shop and it started to act up as soon as the warranty ran out. H.P. Associate basically told me to purchase a new one and that they so happen to have one on sale.......... Last H.P.product for me thank you very much...........

Hi madmaxx,
Welcome to the HP Forums!
I am sorry to hear about your experience with your flickering monitor, and I would be happy to assist you! To begin, I will need to ask you a few questions:
What is the Product and Model Number of your desktop computer?
What is the version of Windows installed on this computer?
Is this display issue a recent occurrence or is it on-going?
Did the graphics card come with your computer, or is it a new addition?
In the meantime, please take a look at this document on Display Quality Issues. This should help point you in the right direction!
Please re-post with the steps of your troubleshooting and the requested information. I look forward to your reply!
Cheers
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.
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Manual Imports to Update Retriever

We have determined that rolling back from a 10.18 version to a 9.18 version of the Intel HD Graphics driver resolves a flickering monitor issue on X240, T440 and Haswell-based X1 Carbons.
We're setting up a driver repository for our fleet of machines using Update Retriever, but it will only display the latest (10.18) driver version. I see that there is a manual import process, but I cannot seem to get it to work. I found another post in the forums from a couple of years ago where someone asked similar question and a Lenovo rep replied pointing them to the driver file, a readme.txt file and an XML file, said to put them in a directory and point the Update Retriever to them and it should import.
The driver I need to import is gid633ww.exe. Would appreciate it if someone could point me to .exe, .txt and .xml files for this driver -- OR if there is some central repository for ALL Thinkpad drivers for this, that would be even better.
Thank you!

Nokia Maps Updater is not for downloading map data. Map data is downloaded using Nokia Map Loader and not Nokia Map Updater.
To download Nokia Map Loader, click here, scroll down to Step 3, download and install to your pc, connect your phone and download all the map data you need.
Message Edited by cjlim on 05-Dec-2009 09:36 AM

Usb or firewire to dvi adapter

Hello,
I have a Macbook Pro without a DVI port (or any dedicated display port) and an extrenal monitor that connects by DVI. I googled usb to dvi adapter and found some for sale, but reviews talked about flickering monitor etc. I'm wondering if anyone has any experience with these? Can you recommend a brand? Is firewire better?
Thanks for any feedback

That is an old one. Not really familiar with it, here is Apple's manual for it http://manuals.info.apple.com/en_US/CinemaDisplays_20_23_30inchUserGuide.pdf
in case you don;t have one.
Not sure you need the USB and FireWire plugged in for the display to work as a display, I think they were there so that you could use the USB and FireWire ports on the display to plug in other devices to the system, kind of like a hub.
As for the DVI cable didn;t one come with the display? You'd need some way to go from DVI to mini-dvi to connect to the MBP. There will also be issues with the graphic card in the MBP, if it has the capability to drive the monitor.
Sorry I can't be of more help,
good luck
regards

Shutdown/Login: solved

Newly installed Gnome (64 bit).
The Shutdown/Logout buttons both put me into the GDM login screen.
Seems like permissions to me.
Can someone help?
Last edited by addr (2009-10-10 17:13:07)

It has started doing it again...intermittently.
I also have optical drive problems and flickering monitor display which I never had before...doesn't matter if I use nv or the proprietary Nvidia driver.
Just updated a Sidux install and an Arch Kdemod and the same problems have suddenly appeared (not the shutdown ones, but neither are gnome).
Both Sidux and Arch are using the latest kernels and I KNOW that I didn't omit adding all the above groups to my user.
So I installed a stable Deb just to see if all these problems occurred...none of them did. Thank god...I was thinking new monitor.
It has to be the latest kernels and my hardware in my opinion. I also have a Deb testing install which has been running fine for nearly three years which has also just gone ape after updating.
I use smxi in Sidux so I can easily revert to an earlier kernel to test my theory if I didn't delete them which I think I maybe did! I'll get back on that.
Meanwhile in Arch is there an easy way to revert to an earlier (30 or 29) kernel?

Monitor flickering with T500 with accell dual-link-dp adapter

I have an HP LP3065 30 inch external monitor, 2560x1600, that I'd like to drive off my T500. I am now on my second accell display-port to dual link dvi adapter and am still getting periodic blackouts of the monitor which last less than a second. At first I thought it was due to insufficient power to the adapter provided through the usb port, as has been reported in various places, so I got a high powered usb hub with ac adapter. Didn't help. Accell said it must be a lenovo problem and that they had "reported" the issue to lenovo. I exchanged the adapter for a new one on the off chance it might be a manufacturing issue but the new one is just the same. Has anyone gotten this configuration to work properly? If so, what dp-dual link dvi adapter are you using? Any special adjustments to your settings? I have the ATI Mobility Radeon 3650 card. All drivers are current as is the BIOS.
Solved!
Go to Solution.

Hi greigite,
Welcome to the Lenovo forum!
Is the Accell B087B-002B the adapter you are using? I haven't used such an adaper, but it looks very nice. It gets excellent reviews on Amazon, though at least one reviewer recommended connecting it to a powered USB hub to eliminate display flickering. You've done that already -- suppose you could try a different powered USB hub on the off chance that the first one is defective, but that seems unlikely.
You might have a look at the power-saving features of your ATI video card. I think you can right-click on your desktop to start "ATI Catalyst Control Center" (if not, think you can find it in the Start menu). One of the panels of CCC lets you adjust power saving profiles, and whether to reduce the vertical refresh rate below the usual 60 Hz. You could try turning the vertical refresh rate reduction feature off, and maybe try some different power-saving profiles.
How often does the flickering occur? Like, once every 20 minutes, or less often?
Best regards,
Frank
Results of Your Ideal Business-Class Laptop survey, concluded 2009-07-29.
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Monitor flickering

There's a vertical line across the screen, and flickering horizontally. I tried connecting the monitor to different computers, and trying vga, dvi and hdmi cables. So it seems to be a problem with the actual screen I believe. It's not under warranty. The Monitor is a HP 2210m. I was wondering if it's something that can be repaired through it's settings or manually repaired by myself or if there's no way of fixing it at all.

Hi travelingsoul,
Welcome to the Forums
I saw your image of your monitor issue, along with your post describing the problem. There may be a way to rid the problem through troubleshooting. I have found a guide I am going to suggest following in hopes to help this.
Click the link: http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=bph05236#N1148
Good luck
R a i n b o w 7000I work on behalf of HP
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“Thanks” for helping!
Click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution!

External monitor flickers when waking up from sleep

I use an external monitor with my new MacBook. All works well, but I have noticed that if I start using the external after the screen has gone to sleep, I sometimes get a problem on the external where the screen flickers and breaks up. If I disconnect and reconnect the Mini DisplayPort then the problem resolves, has anyone else seen this?
Tony

I have the same issue with my new macbook.
When i wake the computer from a partial sleep the screen flickers and i get line distortion through the image.
If i put the machine to sleep unplug the mini dvi adapter and replug it in and wake the computer up the problem disappears.
The issue is also intermittent doing about 3 times out of every 10 wake ups...
If anyone has any suggestions it would be great, I a using a new Dell 2208WFP monitor.

Flickering Monitor

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