Display settings switch upon screensaver launch

Hi,
I've been having some issues with my display settings changing every time my screensaver launches. Without fail, my color settings are switching from LCD to sRGB profile everytime my system comes out of screensaver.
My system is as follows:
ibook g4 14", panther 3.9, and standard os x screensaver
Why is this? Anyone got any ideas how to fix?
Thanks,
Dave Grant

Hi,
See this thread.
SiR G.

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Hello,
Before you begin to read this ( rather ) long post (sorry for that), i will summarize the final question :
Can there be a relationship between freezes and monitor settings in system preferences ? Are there solutions to improve these settings ? what can be done ?
*My experience* :
After last Tiger updates (9 and 10), my Finder (?) froze very often.
In April, for this reason, I made a Tiger "archive and install" installation.
Nothing really improved.
In July, after multiple freezes I uninstalled :
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-Optical Logitech mouse *LCC driver* (and come back to the cord original Apple mouse), and the
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in spite of all these un-/installations, freezes were going on with a peak at 10 one day, leaving me convinced that something important in the G5 was totally dead.
One morning, on start, the screen was totally black and the monitor power green led was even off. (I checked warranty for the monitor : 3 years on site until ... November 2007, at least that could be saved.)
Before calling the shop where I had bought this *SyncMaster 213T* display, I wanted to be sure that nothing else was wrong. So, I did some test indicated on the Samsung paper manual (fortunately, there are still some...) i.e. : unplug the monitor from the computer and test it by itself ... I could see exactly the boxes that were indicated as "normal". So the monitor seemed to be "clean".
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The first thing I did, then, was to open the virtual monitor manual, in the trouble shooting session. Namely concerning compatibility between video cards and this monitor. There was something about frequencies unsupported by certain cards. I understood that the higher, the better. But to get the higher, I had to choose a lower Display resolution. In its native resolution (1600 x 1200), the Monitor pref pane proposed only 60 Hz; to get 75 Hz (the maximum frequency indicated in the pref pane) I had to downgrade the resolution from 1600 x 1200 to 1280 x 1024. So did I. After a last freeze, I restarted with PRAM reset. The screen was ok.
And several weeks after, in August, I realized that, since that time, I had encountered NO freeze at all. At that time, I was sure that the "vigorous" PRAM reset had made the wonder.
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Then I restarted normally on my "working" session. Opened iTunes, but as soon as I wanted to click on Mail in the dock : re-freeze.
This time, when I restarted after shutdown (since the "force to quit" was unavailable), the first thing I did was to re-change the Monitor resolution and frequency (to 1280 x 1024 and 75 Hz). And from this time, mid-august, I had only one freeze, which occurred when I wanted to look at a genuine Apple screensaver (but for this, there are about two years that I had to abandon to look at them or at iTunes animations, that I miss ... snif) I just wanted to check if- now -with this display settings change, things were better, but no.
My display is a digital Samsung SyncMaster 213T (21") plugged on the DVI ATI card port.
Many thanks to those who have had the patience to read this and my apologize to those who have the feeling they have lost their time (and also for my approximative English).
*Thank you !*
PS : Since yesterday my SuperDrive, a Pioneer 106 D, (replaced one year ago by Applecare), seems to be definitely dead : a DVD appears like a text generic document in DiskUtility and does even not appear on the desktop although the DVD player opens, but on a "visualisation" window only (the name of the DVD, a video commercial one, which I could look at last week, did not appear in the window header but did in DiskUtility). And just before, another DVD made an horrible noise in the superdrive but nothing mounts on the desk, DVD player opened but I quickly removed the DVD because of the persistent noise (so I didn't open DiscUtility to see what happened). (Problems with this superdrive date from long).
Can there be a link between this last problem and others above ?
Message was edited by: Josy

Thomas Bryant wrote:
Hello! There are a couple of things you can do. One would be to run the Apple Hardware test to see if it comes back with anything. It's probably on one of the install discs if it's not on a separate disk. Second you can open the console (apps>utilities>console) and see if it's throwing a crash log that might help. The monitor and video card resolution could very well be causing the problem which would seem to indicate since a PRAM reset would clear the resolution settings. I think you'll have to find the resolution that works and stick with it. Tom
Hello!
For the AHT unfortunately impossible now with a dead Superdrive ... I had done it quite recently (one month) and all appeared to be ok. I'm thinking of buying an external one but don't know if it could help for this i.e: if an install DVD will run on an external drive.
for the console: I don't well understand your "throwing" a crash log ... Is it "deleting" that you mean? Then which one?
Just after writing this post, I read an interesting article by a developer about Tiger and resolution (an hidden feature) which I thought could be in relationship with my problem (I'm not a developer myself but to help localizing somme apps I had to install the DTools). Also saw in a forum a similar problem concerning a "younger" type of G5 monoproc 1.8, and an ATI RADEON card (younger too) and this resolution 1600 x 1200. It seems that several people (all gamers) with this configuration was meeting the same trouble. Sky punishment ??
Well I think I will stick to pram reset then.
Thank you very much for you answer (and your patience !)

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Hello OOCCULTRecords,
First I'd recommend resetting your Mac's PRAM if you haven't done so already.
About NVRAM and PRAM
http://support.apple.com/kb/HT1379
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Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
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I haven't tested this as I don't have access to a monitor at the moment, but I found this on insanely mac via a google search.
<pre>tell application "System Preferences"
activate
reveal anchor "displaysArrangementTab" of pane id "com.apple.preference.displays"
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end tell
end tell
end tell</pre>
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Display settings in System Preferences acting up

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My display is 1920x1200, but when I open the Display settings, I get two windows, one telling me that "I am about to change [something something], some applications cannot display information correctly if the screen has less than 800x600 pixels", and the other one, the usual main window, telling me that my resolution is now 640x480 (it isn't).
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Hello everybody,
I have a mirror drive doors G4 Tower, Dual 1.25 GHz.
I have an ADC and a DVI out from the computer. Just had damage to my old studio display so I am attempting to use just one CRT running from the DVI... w/ a DVI to VGA adapter.
The first time I tried this w/ a CRT it worked fine... I played around w/ monitor settings... still worked fine. Shut down... unhooked CRT and moved that CRT away.
Tried using it with another CRT and the new CRT never started up... remained on stand-by/sleep.
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Turned out to be a faulty DVI to VGA adapter.

VGA CRT will not "wake up"... help please. Reset display settings?

Hello everybody,
I have a mirror drive doors G4 Tower, Dual 1.25 GHz.
I have an ADC and a DVI out from the computer. Just had damage to my old studio display so I am attempting to use just one CRT running from the DVI... w/ a DVI to VGA adapter.
The first time I tried this w/ a CRT it worked fine... I played around w/ monitor settings... still worked fine. Shut down... unhooked CRT and moved that CRT away.
Tried using it with another CRT and the new CRT never started up... remained on stand-by/sleep.
I tried with another moniter... this time a LCD/Flatscreen... again VGA and it did the same thing, EXCEPT... this time when I connected the LCD to the adapter and then plugged the adapter into the DVI on my tower the LCD screen would turn on for about 1 second and display my login page. The picture was not perfect though... it was distorted someway.
Went back to the first CRT... now this one didn't work.
I think that maybe I have to reset my display settings with some sort of shortcut or something... maybe it's on the wrong frequency?
I don't know... any help much appreciated. I hate having to use this PC.
Thanks,
James
G4 Dual 1.25 Mirrored Drive Doors Mac OS X (10.4.5) Some NvDia card
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Can you start up in "safe mode"? If so, you can reset your display settings and reboot. If not, you have a problem either with your video card or your DVI/VGA adaptor

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