Monitor keeps trying to brighten when turned on.

I have a Apple 30" Cinema HD monitor. My computer is a Mac Pro with OS 10.5.8 Each night I turn off my computer, and then the next day after I come back from work I turn it on again. Lately, when I turn it on, I've noticed the increase brightness onscreen indicator keeps appearing (every few seconds) as if I'm continually pushing the brightness button. Some times the screen boots up at the lowest setting without me touching it. If I push the increase brightness button, the screen just automatically goes dark again when I let go. Usually, these problems go away on their own after a while, but one or the other seems to happen every day now. What's going on? Is this harmful?

Hi Chrissy,
Sadly it sounds like a Dying or dead drive.
Try this just in case, the Disk Utility again...
PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/HT1379
In fact, do 3 in a row, takes a bit of time.

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I have a G-Tech backup disk that for some reason goes to sleep often. Whenever this occurs, the TM appl. trys to backup and just keeps running. When in this condition I have to turn off the backup drive hardware and turn it back on to get things working again. I don't have the box checked that would allow the OS to put the backup drive to sleep when idle, but the drive goest to sleep anyway.

WiseJD wrote:
I have a G-Tech backup disk that for some reason goes to sleep often. Whenever this occurs, the TM appl. trys to backup and just keeps running. When in this condition I have to turn off the backup drive hardware and turn it back on to get things working again. I don't have the box checked that would allow the OS to put the backup drive to sleep when idle, but the drive goest to sleep anyway.
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I recently dropped my phone onto the area to the right of the trackpad. Straight away the my computer starts trying to eject a cd. It tries 3 times before giving up. This happens everytime a wake up/restart the machine. I'm thinking maybe I knocked something loose with the impact? Will this be easy enough to fix. It works fine, just this noise everytime I open it up.

Good morning,
Sometimes, it’s difficult to distinguish between what is hardware and software induced problems. Repairing Permissions and/or Resetting the Power Management Unit (PMU) may resolve or at least help in the troubleshooting process.
Repair Permissions:
Go to: Applications/Utilities/Disk Utility
Select: your Hard Drive
Select: the First Aid tab
Select: Repair Permissions
PMU
Resetting the Power Management Unit (PMU) is known to resolve certain anomalies and may well help with your symptom.
If the computer is on, turn it off.
Disconnect the AC Adapter and remove the computer's battery.
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The normal set up looks like this:
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Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 16384 x 16384
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1920x1200 59.88
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1920x1080i 60.00 50.00 59.94
1600x1200 60.00
1680x1050 59.95
1280x1024 75.02 60.02
1200x960 59.99
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.08 60.00
800x600 75.00 60.32
720x576 50.00
720x576i 50.00
720x480 60.00 59.94
720x480i 60.00 59.94
640x480 75.00 60.00 59.94
720x400 70.08
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$ xrandr -d :0 -q
Screen 0: minimum 320 x 200, current 320 x 200, maximum 16384 x 16384
DisplayPort-0 connected primary (normal left inverted right x axis y axis)
2560x1440 59.95 +
2048x1152 60.00
1920x1200 59.88
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1920x1080i 60.00 50.00 59.94
1600x1200 60.00
1680x1050 59.95
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1200x960 59.99
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1280x720 60.00 50.00 59.94
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720x576 50.00
720x576i 50.00
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720x480i 60.00 59.94
640x480 75.00 60.00 59.94
720x400 70.08
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So how do I turn the screen back on, preferrably automatically? In Windows this just works™.
Last edited by k0tb4tzen (2015-06-18 21:54:29)

it seems problem in KScreen5
https://bugs.kde.org/show_bug.cgi?id=340267

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hi
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bye
Raj.
email - [email protected]

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9:48 PM Thursday; January 24, 2013
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
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 MacBookPro 2Gb (Snow Leopard 10.6.8)
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FireFox keep saying "unexpected error" when trying to print web pages.

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Hi,
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Hey Chriscic,
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Monitor keeps trying to brighten when turned on.

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