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display brightness

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    tv screen monitor very black/dark

    Hi all I turned my LCD TV into a monitor. However it is very dark with a very harsh contrast. I am sure it has to do with a display setting , but all attempts of going thru the different settings do not change a thing. Also my brightness (F2) is "locked". please help
    • guido.coza
    • Thread
    • contrast display brightness external display
    • Replies: 1
    • Forum: MacBook Pro
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    Can't change display brightness after upgrading to Sonoma 14.4

    I have 2 21.5" LG ultrafine 4k display (22MD4KA). The only way to modify display brightness has always been... using the brightness keys on Magic Keyboard or from Control Center. Since I upgraded to macOS Sonoma 14.4, the OS does not allow changing display brightness through "Settings" app...
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    2011 iMac display too dim after replacing defective GPU?

    System: iMac 27 inch 2011, model iMac12,2 GPU: AMD Radeon HD 6770M Memory: 8GB This iMac didn't boot properly anymore. It showed the gray boot screen and just stayed there without loading the desktop interface. My guess was the GPU was defective, so I ordered a replacement from eBay from a...
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    iPhone 12: 4 x faults at once, have I got a lemon?

    I've had my iPhone 12 for 2 years from new, and all of a sudden the Face ID, compass, screen lock (when you're on a call) and brightness setting all stopped working at once. This has been confirmed as hardware failures by Apple, but they don't actually specify what's caused the issues, they only...
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