PowerPC :: Screen Resolution And Color Calibration / Grey Flickering Screen On Internal Monitor
Dec 5, 2007
Thing is I got hold of a 1ghz 17" iMac almost for free, it had a dead logicboard (I checked it with a voltage-meter), but I figured I could fix it and have a small hobby project-thingie going on. Well I just got a new logic board today, for a 1ghz 17" iMac g4.
Things is I only get a bright grey screen from my Mac when I boot. I've tried connecting it to a external display and that works fine. Everything is there.
I then reinstalled Tiger on it, with the computer connected to my external screen. And I still have the same problem. (I have now disconnected the ext. screen and is controlling the iMac from my MBP). So at least it isn't the installation.
So what is the problem? I can via an Apple Keyboard control the brightness on the blank screen, which would indicate that it does react to input of some degree.
I've read that if the inverter is dead or anything else is dead, you would get a rolling grey screen, flicker or something like that and not a steady bright grey. One thing I'm thinking is. What if somehow this logic board was for a 15" 1ghz imac g4? Can I check this?
I read that long thread about guys buying hi-res displays for their MBPs, and they had to replace some display profile? Could I maybe fix it with a different display profile-file?
I'm really confused by all this, and would appreciate any help I can get.
Model: PowerMac6,1
CPU-Type: PowerPC G4 (3.3)
and
the gfx chip is a GeforceMX4 with 32mb.
The display is a mode 9c27, manufacturer 610, serialnumber 00000, manufacture date: B84D7200.
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Jun 2, 2014
Recently I connected my macbook air (bought it in 2011, now on Version 10.9.3) with a Panasonic TV (TX-32LM70F) via Thunderbolt to HDMI adapter. After I disconnected the external device, the macbook air's screen still worked normal, but when i restarted it, it was only flickering grey.
I found out that it actually boots normally and i can use it with an external monitor (in fact I am using it right now), but that the built-in macbook screen simply doesn't work anymore.
I tried to restart while connected and while disconnected to an external screen, I have reset the SMC Controller, I have reset the PRAM Controller, but it hasn't changed.
This is actually the second time something like this happenend (it was another external device i connected it to), and last time, about a few weeks ago, it just worked again after a few days for no reason, all i did was wait until all energy was gone from the battery and the reload it. So might it be a battery problem? Or is it some controller i don't know? It was the same phenomenon two times: connect to external monitor - disconnect - built-in screen still works - restart - built in screen only flickers grey - macbook still boots and works fine with the very external monitor that might have caused the problem.
Info:
MacBook Air, OS X Mavericks (10.9.3)
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Oct 31, 2006
I purchased a 1.33 G4 14 inch ibook exactly 13 months and eight days ago. The logic board is toast as of today. i.e. flashing colors and flickering screen. I took it back to where I purchased it and many other apple items {powermacpac it Portland Oregon}...and I was told that it was a $600 dollar repair...unbeleivable...I now have a $1050 dollar paperweight. I called apple support to find out if they would fix the computer since we were so close to the warranty end date. n the end...I shoulda bought applecare.
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Sep 24, 2006
I just got an IMac G3 running OS X and OS 9.2.2. I am having monitor problems with it, the monitor has a slight red color on the right side and if there is a light colored box on the screen I get almost a run effect going to the right. This happens in OS X Tiger with all the updates, OS 9.2.2. I also have all the firmware updates, an external monitor looks great.
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Mar 12, 2012
My screen went high-contrast. color profiles and calibration didn't work well - HOWEVER-It looks fine right before I log in! Is there a way to repair the color profiles or whatever? I Installed Photoshop Elements and Premiere Elements a couple weeks ago that's when I think it began
Info:
MacBook Pro, Mac OS X (10.7.3)
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Dec 26, 2008
just installed 10.5.6 on their last gen. iBook.She left the iBook plugged in to the mains and came back to find that the iBook was alternating between the grey Apple screen and a light blue desktop screen where she could see the cursor. Sometimes it would also switch to a blue screen without a cursor.
I've tried holding shift during startup - no effect.
I've tried rebooting NVRAM - no effect.
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Jan 20, 2009
I've been trying to get decent color on my Acer AL2216W display to no avail.
First, I attempted to fiddle with the brightness and contrast levels because I've been having trouble seeing really light grays. I used this as a guide so my whites, grays, and blacks looked good but then my colors were completely off.
[URL]
Then, (after resetting all my changes) I downloaded a color profile from the Acer support website. Surprisingly, that profile is completely off.
Next, I tried using Mac OS X's Color Calibration utility in System Pref > Displays > Color > Calibrate. I ended up with incorrect colors & grays again.
Am I doing something wrong? Could someone please direct me about how to achieve proper colors and contrast?
Also, if any of you have an Acer AL2216W and you have made a correct color profile, please pass it along!
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Jun 7, 2006
OK so i just noticed TODAY that my powerbook's screen is flickering. i didnt really notice it until i changed the background to a neutral grey and now i see a horizontal flicker. does it always do that? or is something going bad?i still have a year left on my apple care ( fortunately ) so if its dying ill certainly take it in to them.
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Mar 15, 2007
...as the color green becomes dominant. The background on the browser is a faded greenish color, and the desktop image is degraded. Got some dandy streaks too! Searches say maybe logic board, but the guy I bought it from said it had a new logic board installed. Cables was a thought, but rotating iBook does not effect changes. I've shut it down for the moment, but am anxious to pinpoint the problem?
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Jan 2, 2009
I have a problem with my 4 year old iBook G4 screen, which flickers or blacks out depending on how far open the lid is. The problem has worsened over 6 weeks. What is the diagnosis?
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Sep 16, 2009
The screen on my iBook G4 is starting to very faintly flicker when there is the slightest movement on the laptop (e.g., typing with the laptop on my lap). My suspicion is that the display ribbon or something is frayed or loose. Any ideas on what might be causing it or how to determine it? How easy would it be to fix and for how much?
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Apr 2, 2010
I'm new to this forum and sensed that maybe someone could give me an advice about my damaged LCD screen of my old iBook.
A few days ago I opened my iBook and the screen suddenly couldn't portrait any white color properly. Everything was flickering and moving. Darker areas have a green flickering as well. I'm not a absolute tech expert, but I tried already a few things. I hooked it up to an external monitor and the picture was fine! So it must be hardware related right?
Now the weird thing. Sometimes the panel suddenly works properly for a few hours. I don't know what could trigger it, I tried everything. What should I do? I took some pictures and uploaded them to Flickr:
http://www.flickr.com/photos/3129175...7623630430475/
I know the machine is old, but I originally planned to get a new MBP this summer. I can't afford a new machine right now and the current MBP are just overpriced compared to similar old products on the market.
I have to be mobile, so I need a laptop.
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Nov 28, 2006
My brother's ibook (14", 1.33 Ghz, 1.25 GB RAM, 10.3.9) recently developed a problem: when he would open it, the screen would show fuzzy lines for a few seconds before "stabilizing." He tried to live with it, but it got progressively worse. Now, the lines never disappear, and the screen flickers as well.
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May 9, 2012
I have a 27" iMac and have connected a Philips 160e as a pallette monitor via a Mini Display Port to VGA adaptor. the iMac sees it but auto picks the wrong resolution 1280 x 1024 (stretched) instead of the Philips' 1366 x 768 @ 60Hz.
If I try to change the resolution the screen goes black which is symptomatic of using the wrong refresh rate, and of course I can make no further adjustments. esc does not get me out of the black screen.
What is worse the iMac seems to remember the wrong resolution/refresh rate after restarts.
I have tried Safe Mode (it stayed black) and booting off an external hard drive into another system (back into black if I change the display settings).
I have gone into System Preferences > Display > Color >unchecked 'Show profiles for this display only' > selected > Philips 160E in the list
It only contains .icc profile information, which I suppose is to be expected but is the only access I can find to any specific model data. The same display works fine with an older 24" iMac, using a different adaptor because of the different display port.
Somewhere OSX is storing the settings for the external monitor, I'd love to be able to trash it or change it back.
Info:
iMac, Mac OS X (10.7.3), The closest you'll ever get to there, is here.
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Mar 25, 2012
I have been having some problems with my Macbook Pro. I have a new BenQ screen connected to it via the Mini Display Port to VGA adapter from Apple. No matter what I do, I cant seem to be able to change the resolution to anything higher than 1280x1024, which is a pretty stupid resolution to have on a 27'' monitor. Sometimes when I plug it in, it gives me the option to change the resolution to 1920x1080.
But when I select it, the screen goes black and displays the message "No signal detected". Now, as it happens, I have a copy of windows installed on a partition of my hdd, and the screen works flawlessly on it. full HD with 75 Hertz. So that shows that it is not a hardware problem, it has to be a software problem. I tried everything, including reinstalling OS X, and deleting the "windowserver" files. no success.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Aug 15, 2008
On my 2008 24inch iMac the screen has a problem ( dead pixels ) and I will get it replaced in the future , in the mean time I have a very nice large external monitor connected to the iMac which I use ok, what I am looking for is a way at first when booting up , to be able to see both the iMac's screen and the external monitors screen, then some how shut off / make blank the iMacs screen only leaving the external monitor on ?
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Jan 7, 2011
Im using a MBP 13'' 09 I believe (9400M). Every time I boot into OS X 10.6.5 and now 10.6.6 my screen is all washed out. I can see stuff but there are just way too much "whites. "(With an external and also with the internal).
An easy remedy for the external just requires me to unplug and replug the monitor back in and the calibration automatically fixes it's self on how it used to be.
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Jun 15, 2009
Has anyone noticed a very slight flicker on their new MBPs? I have a new 13" and, every so often, the screen brightness dims and then brightens very quickly (happens in less than a second).The option for auto-adjusting the screen brightness is off so it's not that particular function.It's most noticeable on all-white backgrounds both on AC and battery power. Hard drive access doesn't seem to coincide with the dimming.
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Nov 5, 2010
I've had the new macbook air just two days now. Turned it on this morning, used it for like 5 minutes and the screen just started flickering, and the whole machine just froze on me! Had to do a system reset, but I'm a little concerned after spending over a grand on this macbook! Has anyone else experienced this? I'm actually thinking about returning the machine..
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Sep 5, 2006
I have a 64MB ATI graphics card and can't get the screen resolution I want. It was fine and I had it set to how I like, until I plugged in an S-video cable to my T.V then all the settings changed and now I can't get back to the resolution I had before. I unplugged the cable and tried to change them but still no luck. When I select the desired resolution it makes the screen tiny in the middle of the monitor. The resolution is fine on the T.V. I have a real pet hate of low screen resolutions which is all I can use at the moment. I bought the card on ebay but think it is a PC "flashed" to MAC as the factory drivers CD is PC and MAC drivers are on a cd-r. Is there any way I can clear the memory of the card or the files that the card uses so I can "restore" it to how it was before I connected the s-video. It also asked me in the ATI app (the first time I opened it with the T.V connected) if I wanted to have the connection to the T.V as always on. I removed the app and reinstalled but it seems to have remembered the settings and doesn't ask this again. Is there any way to change it back so it doesn't remember?
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Jan 8, 2007
I'm honing in on the purchase of a powerbook. One area that has me a bit confused is the screen resolution of the 15" models. I can see two models that look identical in specs (apart from one having 128Mb of VRAM and the other 64. both are 9700 cards). Anyway one ad says it is 1280x854 widescreen and the other says it is 1440x960 widescreen. I can see these are the same proportions and maybe the 1280x854 can be set at 1440x960. The 1440 one is about 6 months old and the other one is about a year older so maybe some specs were changed. My question is, are these two different resolutions meant to be the native resolution on each machine respectively? Or do they both have the same native resolution and are just set up differently.
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Sep 15, 2006
I have seen this talked about a fair bit, but i thought i'd start my own thread because it seems slightly different.
To start, when the computer was last running, the (what sounded like fan) started making a terrible noise, then stopped, and the computer turned off.
After that, when booting, it just goes to a grey/blue screen and sits there.
I have an iBook G4, 1064mhz, 256/30.
I dont know what model that makes it, but from the Mac website, I have tried to reset the PRAM to no avail. All of the methods listed do not seem to do anything on my ibook.
I tried using this link to reset the [URL]
I dont know which one is for my model, but i see no reset button under the keyboard, or on the case. There is a little tiny hole on the case beside the LCD???
I have tried the shift-ctrl-opt-power but it doesnt do anything.
As well, i did hold down the "option" button when booting, and it brings me to a screen which shows an image of a hard drive with a green "x"
I dont know if the green means good or the X means bad..
I have read that resetting PRAM and/or changing the resolution seem to help the problem, but I do not know how to do either.
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Nov 1, 2007
So my quicksilver has been working great up until this afternoon. i had to restart and now whenever i turn it on all i get is a blank grey screen and nothing else. i dont hear a startup chime or anything.
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Jun 8, 2009
It makes the startup chime, and I've tried resetting the PRAM and PMU and none of it works. Apple store said they thought it was hard drive failure, but I doubt it because it won't boot from CD either. Do you think it's logic board failure?
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Dec 24, 2006
Yesterday I installed the latest security updates for my ibook via software update. I'm not sure if this is related to my problem, but I thought I might as well mention it. A few hours after installing the updates, I turned on my computer. Everything was running fine, however as I was listening to music and surfing the internet, my screen turned black. I checked the contrast and it was all the way up. The screen then turned completely off. Upon restarting the computer, my screen got to the loading page with the apple icon and the loading circle, and then turned black and flickered every so often with a screen of vertical multi-colored bars.
I held down the power button to turn the screen off, and the flickering increased, before becoming completely covered by the multi-colored bars and then shutting off. This morning I tried again and my computer actually booted up. However, after a few seconds the screen went black, paused for a few seconds, then went completely red, then green, then blue, then three shades of gray, and finally black again. It repeated this cycle twice before the screen turned itself off. Is this a virus, or hardware/software malfunctioning. I've had my ibook for two years.
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Jun 1, 2008
So I have noticed a few times already, that the screen on my white macbook flickers to change the brightness level. It can do this while the computer is plugged in and charging, or if it's off the charger. It is definitely noticeable as it causes me to just watch what the screen is doing.
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Jan 28, 2010
My screen just started to occasionally have a flicker of a white line show up...It doesn't happen that often, should i worry? Is it worth taking it into apple? (Under warranty still) Since its not consistent i wont necessarily be able to show them what its doing..
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Oct 3, 2006
what i intend to do is have my imac g5 and my peecee (pc ) on the same desk, but of course i cannot use the imac display, so i will use an extra display and use a KVM switch, my question is; Will the extra screen need to be the same resolution as the imac using ssd?
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Oct 16, 2007
So i bought a 1gig RAM stick for my iBook for Kahlon. Kahlon said that this RAM was supported for my iBook. The specs for my iBook are 12in, 1.2 Ghz, 120gb hard drive and 1.25 gigs of RAM. Ok so I put in my RAM in about March and it worked fine for about 3 months. Then in late July my Mac started showing the "Grey Screen of Death." So i thought that it might of been the hard drive so i did some repairs and nothing changed. So then after that I reformatted my hard drive and reinstall Tiger and nothing changed either. So i finally took out my RAM and tested to see if that was the problem and low and behold my computer ran fine (a little slow because it was was running on 256mb of RAM but it ran fine for about a week). Then I put the RAM back on in it but the Computer only read that the 1gig stick was actually a 512mb RAM stick but it still worked fine for a week until I installed a update and so I had to restart my computer (restart being the Key Word). So when I restarted my computer my computer recognized that it had a total of 1.25gigs of RAM. But when i went to start up itunes or any other application it would immediately show the "Grey Screen of Death." Does anyone know what could have happened I think that it is the Logic Board but I don't know.
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Jul 15, 2009
When I turn on my computer, the wheel keeps spinning and stops on the grey apple screen. If I leave it there for a few minutes, the fan gets really loud.
I tried pressing Apple, Option, P, R, but it only chimes once.
I also tried holding down shift and restarting.
And I tried holding down option and restarting.
I even tried to take out the memory and put it back in.
Nothing is working.
I have the startup disks, but I don't know how to put them in the cd drive.
Since the computer won't boot up, I can't open the tray.
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