I'm experiencing an issue where exactly every 60 seconds, the screen briefly dims, then brightens, then beeps. I don't care about the dimming/brightening, but the beeping is maddening. It happens while charging using a new (non-Apple) Magsafe3 connector I bought, connected to a 96W Apple power adaptor. This combo otherwise seems to charge fine. So: can I fix this behaviour? Or at the least, prevent the beeping? It's a 2022 M2 Max Macbook Pro. Ventura 13.6.3 (22G436) EDIT After some research I've discovered: - the screen dimming behaviour can be disabled in settings, "Slightly dim the display on battery" - the beep is called the "Power chime". So now the question is how to disable the power chime. The actual file is at /System/Library/CoreServices/PowerChime.app/Contents/Resources/connect_power.aif but I'm not able to modify/remove it.

Using Logitec MX Keyboard without Logitech's Options+ app. It works fine, but I can't control backlight on-duration. There are key-mapping utilities, but I can't find one for backlight control. There is no key for this setting and I don't know of a shortcut, either. **Can I control backlight on-duration with an app other than Options+?** I don't want to install it. PS: When/How did functions like these become so locked down?

I did accidentally overpowered (12v) the USB Port of My MacBook Pro 2015 by putting a powered male usb. (I know that is stupid of me). Immediately the display and the light of my keyboard went off. I hear on the sound of the MacBook that the Mac is still alive. Now I am questioning myself. -are the display and keyboard light dead and have to be replaced? -is there any protection mode designed by smart apple engineers to protect such a rare situation. By for example a fuse (for backlight/display, I found on YouTube the replacement instructions already. For keyboard I didn’t yet found any) or a software mode? I’m not able to search for any resource to help me solve this. What guides or steps are people using for this situation?

My Macbook Air (2015 model, High Sierra) screen is dead most of the time but randomly fades in and out. Sometimes it fades rapidly in and out non-stop for a prolonged period, before fading out entirely. The backlight is not dead - it works but is impossible to control. Please see this video for a demo of the issue. Does anyone know the cause, or solution?

Something crasched or hung on my Macbook Pro 16" (intel) and now they keyboard backlit is off while the touchpad is on but doesn't react on input. I would like to restart all processes controlling these features but haven't found any obvious candidates. What is/are the name(s) of the processes controlling the keyboard backlit and the touch bar?

This is not a problem at booting up. For a couple months now I'll be using my laptop when suddenly the screen dims to about 50% of normal. According to the brightness indicator the brightness is all the way up; I can make it dimmer, but not as bright as normal. The dimming isn't super even either, there are small areas of the screen that seem darker/brighter. In the past the problem easily goes away if I close the lid and reopen it... but now it's happening a lot and sometimes going completely black. Is this an easy/cheap fix? I'm traveling and can't do it myself. Is it worth bringing to the Mac store? Thanks!

I am on a MacBook Pro 13-inch with Big Sur installed in it. I want to know whether there is any third party app or terminal command, which transitions the keyboard backlight from 0 brightness to max brightness and vice versa gradually, like it happens in RGB keyboards. Thank You.

I have a 2009 white MacBook that doesn't seem to be waking from sleep properly. I close the lid at night to put it in sleep mode, and when I open it the next day, the display backlight doesn't turn on – I just get a black screen. I know the computer itself is powered on because I can hear the fans running, and I know it's not in sleep mode because the sleep indicator light turns off when I open the lid. It's exactly as if you lowered the brightness to 0. I tried adjusting the brightness, hitting all sorts of keys, etc. and nothing gets the display to come back – so I've resorted to holding the power key to force it off, then booting it back up. Is there anything I can do, or is this a hardware failure? Surprised as the machine is only 3 years old (though it's my employer's, not mine!). UPDATE: I have an external monitor hooked up to the MacBook, and when the MacBook's display fails to turn back on after waking from sleep, the external monitor also doesn't display anything – just the default "no signal" message that appears when the monitor is on but not plugged into a computer. If this were an issue with the MacBook's internal display cable (as it seemed like it was), would that also prevent the external monitor from displaying anything?

Both upgraded to macOS Mojave 10.14.6 18G103 - It took me a while to notice on the MBP because I use it as a desktop with a wireless keyboard and a dust cover over the built-in keyboard, but I upgraded the MBA, noticed this on the first restart, and then came to see that the MBP has the same issue. Reset PRAM/NVRAM & SMC on the MBA, no change. Any idea whether it's a known issue or what else I can try?

I have a 2018 MacBook Pro running 10.15.3, and I'd like to be able to turn the keyboard backlight off (without simply turning it all the way down) when watching a full-screen video, but allow it to return if any key *other than the spacebar* is pressed. The ultimate goal is to make the keyboard backlight less intrusive when watching a video, and allow pausing and un-pausing of a video without activating the keyboard backlight. However, *if a key other than the spacebar is pressed*, this 'mode' would be cancelled, and everything returned to normal, until the user again chooses to (provisionally) deactivate the keyboard backlight. I can't find any ways to do this in the OS or with any third-party software, including Karabiner (which I don't use, but can't find references to backlight) or through any preference or extension to VLC. The "Turn keyboard backlight off after [...] seconds of activity" setting in Keyboard within System Preferences would need to remain unchecked.

My Macbook pro has no backlight (you can see a dim image). I checked the backlight fuse on the logic board and it's burned out. I heard Apple recommends replacing both logic board and display to fix this issue, as the display be shorting out the logic board (so if I replace the logic board alone, the new logic board may get shorted out and damaged by the display again). This way I may just replace the logic board without having to replace the display if it’s healthy. How would one check the display pins for a short-circuit?

I've started seeing these dark regions at the bottom of my screen. They go away temporarily when I close the laptop, but come back every now and then. Is there an easy fix for this, or is there something wrong with my display?

Many similar questions I've read here have to do with backlights not working at all or when dimmed. My problem is that the number 6 key is not illuminating. All other keys are working as they should. Any ideas how to diagnose and fix this?

The screen on my (desktop, not laptop) iMac is not working .. the backlight only works sporadically. If I hold a flashlight up to the dead screen, I can see the pixels; the video is working, just not the backlight. I've connected a second display (it is mirrored; both show the same desktop), so I can still use the computer. **The interesting thing is that if the computer "sleeps", upon being woken up, the iMac's display works briefly for a fraction of a second, then it goes dark again.** According to a sticker on the back of the panel, it uses CFL compact fluorescent lamps (not LEDs). The inverter is located on the mainboard (underneath the CD drive); the wires are soldered to that board.. the other ends are soldered directly to the CFL lamps.. but there are connectors in the middle of each wire. BTW, the capacitors on the inverter board look OK, I don't see any burn marks, or broken wires, or bad solder connections on that board. **Does this sound like a problem w/ the inverter board, or with the connectors in the middle of the wires that go to the lamps?** EDIT: this is a 2008 iMac 20" 2.66/2x2g/320/wm/wk

I've bought few months ago a MacBook Pro Thunderbolt 13' . As a Linux geek, I'm really happy with this computer, and it usually works fine. Unfortunately, three days ago, I wasn't able to restart it. It stucked without booting when I pressed the power button. I look on Apple website, and there was a procedure that describes how to reset the SMC , and I did that. My computer restarted (yeah), but unfortunately, I had problems with the display backlight (cf pic). So I stop the computer, and did the SMC reset thing one more time. I experienced problem to restart , but for the moment all the backlights issues seem to be solved. I'm now a little bit afraid about the reliability of this computer, and I have lots of question about this SMC I can't answer. - Why does that thing need to be reset? What is it exactly? As a geek, I like to know how my computer works :) - Can we reset it often without problems, or is there a limit on the number of time you can do it without harming the computer? I read differents advises ont he web saying 'go, on do it every week' or 'do it in last resort'. - If the restart problem still occurs, should I send the computer to the customer service for a global checkup? Thank you for your help :) Romain

I was using my MacBook today when suddenly the backlight turned off, right while I was in the middle of using it. I know it was the backlight because: - I have an external display, which remained on, and I could still see my desktop (so the computer hadn't turned off) - The windows that were on the internal display didn't move over to the external display, meaning that the internal display itself was still on, but just not illuminated After some experimentation, I discovered that I could get the backlight to turn back on by holding down F1 (to lower the brightness) until the brightness setting reached 0, then holding F2 (to raise the brightness) until it was back at 100%. It was as if the system didn't "know" that the backlight was off until I manually lowered the brightness to 0, and then it would know to turn it back on when I raised the brightness. However, after doing this, the backlight would only last for a few seconds at 100% and then it would turn off again. Finally, I tried raising the brightness *slowly* from 0, and was able to work my way back up to 100% without it turning off. It's been working since. Is this a hardware failure or a software glitch? I'm running OS X Mountain Lion (10.8.4) and the issue persisted through a reboot.

I followed the steps to make the CM Storm Devastator keyboard backlights turn on (using [this] [1] tutorial). That is working. But, when I assigned a key to toggle the backlight, the backlight does not turn on. The key I have it assigned to is command+F14. I am on Yosemite.

The backlight on the display of my MacBook Pro 15 retina early 2013. I have tried to make it brighter by pressing F2 but it didn't work, and when I bring a light from the back of the display exactly near the Apple logo I can see my login screen.

I have a CM Storm Devastator and cannot get the backlight working on Mac. I have followed the instructions below : > 1. Go here: https://developer.apple.com/library/mac/samplecode/HID_LED_test_tool/Introduction/Intro.html > 2. Click the little "Download sample code" button > 3. Open the downloaded folder and go to Build / Release > 4. Drag the HID LED test tool file to your Applications folder > 5. Launch the OS X "Automator" program > 6. Choose "Service" document type > 7. Under "Library", click "Utilities", and drag "Run Shell Script" to the blank area / workflow pane. > 8. For "selected service receives" choose "no input" in "any application" (important) > 9. For "pass input" choose "as arguments" (important) > 10. For "shell" choose "/bin/bash" > 11. Paste in this script: > /Applications/HID\ LED\ test\ tool & pid=$! sleep 3 kill $pid > 12. Click "run" to test. After 3 seconds, your keyboard should remain in a state with num lock and scroll lock enabled, and all the keys should be lit up. Yay! Continue to assign keyboard shortcut to do this. > 13. Click "File" > "Save", "Save service as" : "Devastator LED Lighter" > 14. Go to System Preferences > Keyboard > Shortcuts > Services > General > "Devastator LED Lighter" > 15. Assign a shortcut. Scroll lock and F keys didn't work for me. I ended up choosing " The problems I have encountered: 1. The downloaded file is called "HID_LED_test_tool". This contains 3 files - HID LED test tool-Read Me.txt - HID LED test tool.xcodeproj - main.c Problem: it does not contain a build/release folder, so I dragged HID LED test tool.xcodeproj into the Applications folder. 2. I followed all the instructions above renaming the HID LED... file to a simple HID. The problem is that when I run the automator program as indicated above I get the reply xxxxx is a directory. I cannot get around this; I have tried extracting the file within the HID LED test tool folder and then executing the automator with that file name but the exact same thing happens .... 3. When I attempt to open the project.pbxproj file in Terminal I get the response : Last login: Sat Feb 7 19:34:21 on ttys000 /Applications/HID\ LED\ test\ tool.xcodeproj/project.pbxproj ; exit; Zakias-MacBook-Pro:~ zakia$ /Applications/HID\ LED\ test\ tool.xcodeproj/project.pbxproj ; exit; /Applications/HID LED test tool.xcodeproj/project.pbxproj: line 1: //: is a directory /Applications/HID LED test tool.xcodeproj/project.pbxproj: line 3: archiveVersion: command not found /Applications/HID LED test tool.xcodeproj/project.pbxproj: line 4: classes: command not found /Applications/HID LED test tool.xcodeproj/project.pbxproj: line 6: objectVersion: command not found /Applications/HID LED test tool.xcodeproj/project.pbxproj: line 7: objects: command not found /Applications/HID LED test tool.xcodeproj/project.pbxproj: line 9: /Applications: is a directory /Applications/HID LED test tool.xcodeproj/project.pbxproj: line 10: syntax error near unexpected token `(' /Applications/HID LED test tool.xcodeproj/project.pbxproj: line 10: ` 8DD76F770486A8DE00D96B5E /* main.c in Sources */ = {isa = PBXBuildFile; fileRef = 08FB7796FE84155DC02AAC07 /* main.c */; settings = {ATTRIBUTES = (); }; };' logout [Process completed]

When I arrived at home today, my Macbook Pro was frozen. When I rebooted, the backlight looks like this: After logging in, I can still see the backlight edges, as if it's turned too brightly, or "burned out". The model is a MJLQ2. External monitor outputs work fine. I turned off Flux and Night Shift, but the problem persists. Calibrating white point did not fix it either. Is this reparable and is it covered under warranty?