Hey Admin(Karl) Still have brightness control problem w/dual ACDs on G5

Can someone on the administrator or tech 3 or 4 guru level from Apple Please tell me what I need to do to access the brightness controls of my two previous generation "clear with/ white frame" apple 23" cinema displays ? I posted here two weeks ago - had no responses.
Went to AppleCare via phone for an hour - Indian person trying to help said it is available in the monitors prefs tabs/and monitor pull down menu on the menu bar next to the time ( nothing but resolution/arrangement/color profile there ).
I have since re-installed 10.4 from the original disks AND upgraded to 10.4.3 - Hoping that something would change. Nothing did.
Nothing shows up on screen when pushing the brightness buttonon either monitor, OR when I go to the monitors control panel - no brightness slider or tab on top.
It is driving me crazy to have to review my work ( digital photography ) on my old G4 system to be able to judge the proper density of the images.
I can profile the pair with a Spyder2 calibrater, and load the profiles fine, but again brightness is the issue, not the color. One of the displays is about 30% brighter than the other, and there in lies my problem.
Since the same difference in the screens is the same across various applications ( Final Cut Pro / Adobe PS / DVD player ), can I assume that this is a system issue software issue ?
Am I the only one having this problem ? Or is there just a glitch that no one has managed to tackle and fix even this far into Tiger ?
Please someone reply and save my sanity !
Mel
NEW Powermac G5 2.3 w/ dual port stock video card Mac OS X (10.4)

Hi Mel,
Sorry to hear that you are having problems.
I feel I have to point out that most of the 3 or 4 level Gurus don't actually work for Mac. We tend to obtain our knowledge from our own experiences plus sharing other peoples' experiences in this forum.
The reason I haven't responded to your issue myself is because I have no first hand experience of your problem, and I haven't been able to find anybody else who has had this problem and has been able to fix it. I'm always reluctant to respond unless I feel I have some information that will really help (or, at least, not possibly make things worse).
Anecdotally, this issue appears to have surfaced with the release of Tiger, so it may well be a software issue.
I don't know how old your G5 is - will it function with Panther? If that is the case, then installing Panther on another drive or partition (i.e. keep Tiger for now), and then booting up with Panther may give you an interim solution while the issue (hopefully) gets resolved in Tiger.
The fact that the brightness options are not available probably means that the drivers bundled with the Tiger installation for the graphics card that is in your G5 do not support the displays you are using properly. I believe that the stock video card you are using is an ATI card (you might want to check this via system profiler). At this stage, it would certainly be worth your while to contact ATI support and see whether they have drivers available that will assist you. This link may help get you started:
http://www.ati.com/products/mac.html
I acknowledge that I haven't really given you a solution, and I apologize for that. Hopefully, what I have given you will give your quest some direction.
Please let us know how you fared. All the best.
Cheers!
Karl

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Type
Nom
Format
Binaire
Version
ACM
Codec Microsoft IMA ADPCM
0011
ACM
CODEC A-Law et u-Law Microsoft CCITT G.711
0007
ACM
Codec audio Microsoft GSM 6.10
0031
ACM
Codec Microsoft ADPCM
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ACM
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ACM
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0001
DMO
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0160, 0161, 0162, 0163
WMADMOD.DLL
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DMO
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WMADMOD.DLL
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WMSPDMOD.DLL
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DMO
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mp3dmod.dll
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Type
Nom
Format
Binaire
Version
ICM
Microsoft RLE
MRLE
msrle32.dll
6.1.7601.17514
ICM
Microsoft Vidéo 1
MSVC
msvidc32.dll
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ICM
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wmvdecod.dll
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De : sarika02
Envoyé : 17 juin 2014 19:26
À : Daniel Cloutier
Objet : On photoshop element 12 when I open a .MTS file I have the sound with a black screen if I open a .mov it work fine I have uninstall and reinstall I still have the same problem can you help?
On photoshop element 12 when I open a .MTS file I have the sound with a black screen if I open a .mov it work fine I have uninstall and reinstall I still have the same problem can you help?
created by sarika02 <https://forums.adobe.com/people/sarika02> in Photoshop Elements - View the full discussion <https://forums.adobe.com/message/6466796#6466796>

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<blockquote>Locking duplicate thread.<br>
Please continue here: [[/questions/891666]]</blockquote>
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