With over two thousand articles here about Macs and their problems, it can be tricky to know where to look first. Here's a selection of starting points for troubleshooting and solving issues.
- Light Consumed Mac Os X
- Light Consumed Mac Os Catalina
- Light Consumed Mac Os 11
- Light Consumed Mac Os Download
MacBook Air is completely transformed by the power of Apple-designed M1 chip. Up to 3.5x faster CPU, 5x faster graphics, and 18 hours of battery life. Operating System UFR II Lite: Windows 7 / Windows 8.1 / Windows 10 / Windows Server 2008 / Server 2008 R2 / Server 2012 / Server 2012 R2 / Server 2016 / MAC OS X (from 10.9.5 or later).
Troubleshooting macOS: Observation and the log
Pick your Panacea: how to select a generic fix
Prepare your Mac for service/repair, and restore it later
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M1 Macs (Apple Silicon)
Introducing your new M1 Mac
Startup modes for M1 Macs
Inside M1 Macs: Time and logs
Which firmware should your Mac be using? (version 5) – for Big Sur
Boot volume layout
The non-Universal binary: a cautionary tale
Apple Silicon Macs will require signed code
Magic, lipo and testing for Universal binaries
Tuning Apple Silicon will be complex at first
Light Consumed Mac Os X
Crashes, freezing, panics
Diagnosing an abnormal startup: what that screen means
Did your Mac crash, freeze or panic?
Understanding ‘crashes' and kernel panics
Did that Mac just restart itself? About kernel panics
Reading a Panic Log in Catalina
How a kernel zone memory leak can panic macOS
WindowServer-GPU crash: different from a kernel panic
Tackling sleep and wake problems
Diagnosing a Mac which can't complete booting
What to do when a process is using excessive CPU
Problems after system updates
Sumo ball! mac os. What to do when a macOS update goes wrong (macOS 10.13-11.0)
The universal panacea for macOS problems: install the Combo updater
A plain guide to Mac firmware and its problems
Reset and maintain your SMC and NVRAM
Crash recovery and disk problems
Making sense of Disk Utility and disk structure in macOS 10.13-10.15
Should you trust Disk Utility's First Aid or fsck?
Recovering from a hard crash – when your startup drive is missing or damaged
Monitoring SSD wear and ageing
Checking your drives with DriveDx
Q&A – Dead Mac recovery – recovering files from a dead Mac
S.M.A.R.T.ypants – hard drive failure detection
App problems – preference settings
Preference settings: where to find them in Mojave
Global defaults in macOS Mojave
Working safely and effectively with preferences in Mojave
Unsticking stuck preference settings
Keychain problems
Tackling keychain problems with KeychainCheck 2, now a Universal App
Why do I have to keep entering my keychain password in Sierra?
How to repair your keychain by making a fresh one
Time Machine problems
Time Machine 17: Using utilities to solve problems
Time Machine: 1 How it works, or fails to
Time Machine: 2 What it writes in the log
Time Machine: 3 Analysing automatic backups
Time Machine: 4 Problems with backups
Time Machine: 5 Changing Macs and more
Time Machine: 6 Networked storage
Time Machine: 7 Checking logs using Ulbow
Time Machine: 8 Preventing problems
Time Machine: 9 Inside backup support files
Time Machine: 10 Tools
Time Machine: 11 tmutil
Time Machine 12: Backups that never complete
Time Machine 13: Backups and versions
Time Machine 14: Diagnosing and working around slow backups
Checking backup transfer rates using T2M2 version 1.13
Time Machine 15: Large files including VMs
Time Machine 16: Reading a normal backup in Catalina using Mints
How to check the integrity of files in a Time Machine backup
What to do when T2M2 or another log-based app returns an error
Logs – Sierra and later
Use Ulbow on Sierra and later
macOS Unified log: 1 why, what and how
macOS Unified log: 2 content and extraction
macOS Unified log: 3 finding your way
Locating a problem in the log using Ulbow 1.1b3
Time Machine: 7 Checking logs using Ulbow
When did my Mac last start up, and why? An exploration with Ulbow
Mac shutdown and sleep cause codes
How to reveal ‘private' messages in the log
Logs – El Capitan and earlier
Log race – understanding and using Console's logs
Reading logs: shutdown and startup
Reading logs: waking from sleep and backing up
Getting El Capitan to run clean – using Console and guesswork to stop repeated service crashing
Service with a Smile – advanced troubleshooting of services and the startup process
Privacy protection
A Guide to Catalina's Privacy Protection: 1 Principles and structure
A Guide to Catalina's Privacy Protection: 2 Controlling privacy settings
A Guide to Catalina's Privacy Protection: 3 New protected locations
Diagnosing privacy protection problems in Catalina
A Guide to Catalina's Privacy Protection: 4 tccutil
A Guide to Catalina's Privacy Protection: 5 Location
Networks
Small Networks Without Big Headaches – setting up and diagnosing a small network
My email is broken – how to diagnose and fix mail problems
The medium of the message – email clients and types
iCloud and cloud services
A break in the clouds: when cloud services won't work – including links to service status for iCloud, Adobe CC, etc.
Testing iCloud using Cirrus
What to do when your account might have been compromised
Which extended attributes does iCloud preserve, and which get stripped?
Generic approaches
Pick your Panacea: how to select a generic fix
My Mac don't work – troubleshooting tools and techniques
How to tell whether a problem is in your Home folder
Generic troubleshooting: how to fix something that doesn't work
Tackling the serious and insoluble
Reviving the hopeless Mac: what to try before visiting the Genius Bar
Prepare your Mac for service/repair, and restore it later
Useful references
Conventions and Standards for Mac Articles
Which startup mode?
Startup and shutdown key combinations for macOS Sierra
Reset and maintain your SMC and NVRAM
Firmware fundamentals
A plain guide to Mac firmware and its problems
Which EFI firmware should your Mac be using? (version 4) – for Catalina
Which EFI firmware should your Mac be using? (version 3) – for Sierra, High Sierra and Mojave
Which EFI firmware should your Mac be using? (version 2) – for El Capitan and earlier
Safe Booting in Catalina has changed
My Mac only runs properly in Safe mode
Which Recovery Mode?
Recovery mode and its tools
Hardware diagnostics
More About This Mac: where to find that UUID, MAC address, etc.
Boot volume layout
macOS Mojave Boot Volume Layout
How should you clean re-install Catalina?
How clean re-installs change in Catalina
How to check quarantine, 64-bit, signature, and notarization for almost anything
A user's guide to code signatures and notarization
What happens when you run an app in Catalina?
How Catalina handles app first run
Will Gatekeeper let me run that app in Catalina?
What happens when you double-click a document? Processes, problems and solutions
Copy, move and clone files in APFS, a primer
Apple has changed resetting permissions again
Why are my Mac's fans running at full blast?
Caring for well-washed hands
Disinfecting your Mac and devices
How to clean Macs and other Apple hardware
Further details
Full categorised listing of Mac articles here.
Free tools available
Here is the downloadable PDF version with links to all the product pages:
AppSelectionChart
Thanks for installing f.lux.
Your f.lux installer is a .zip file - it should be in your Downloads folder. Install f.lux by double-clicking it.
Once f.lux is installed and running, you should see the f.lux Preferences window appear. Here, you can enter your location and set your usual wake time. f.lux uses this information to create a custom lighting schedule for you.
You can open up Preferences any time to view and change your f.lux settings.
Generic approaches
Pick your Panacea: how to select a generic fix
My Mac don't work – troubleshooting tools and techniques
How to tell whether a problem is in your Home folder
Generic troubleshooting: how to fix something that doesn't work
Tackling the serious and insoluble
Reviving the hopeless Mac: what to try before visiting the Genius Bar
Prepare your Mac for service/repair, and restore it later
Useful references
Conventions and Standards for Mac Articles
Which startup mode?
Startup and shutdown key combinations for macOS Sierra
Reset and maintain your SMC and NVRAM
Firmware fundamentals
A plain guide to Mac firmware and its problems
Which EFI firmware should your Mac be using? (version 4) – for Catalina
Which EFI firmware should your Mac be using? (version 3) – for Sierra, High Sierra and Mojave
Which EFI firmware should your Mac be using? (version 2) – for El Capitan and earlier
Safe Booting in Catalina has changed
My Mac only runs properly in Safe mode
Which Recovery Mode?
Recovery mode and its tools
Hardware diagnostics
More About This Mac: where to find that UUID, MAC address, etc.
Boot volume layout
macOS Mojave Boot Volume Layout
How should you clean re-install Catalina?
How clean re-installs change in Catalina
How to check quarantine, 64-bit, signature, and notarization for almost anything
A user's guide to code signatures and notarization
What happens when you run an app in Catalina?
How Catalina handles app first run
Will Gatekeeper let me run that app in Catalina?
What happens when you double-click a document? Processes, problems and solutions
Copy, move and clone files in APFS, a primer
Apple has changed resetting permissions again
Why are my Mac's fans running at full blast?
Caring for well-washed hands
Disinfecting your Mac and devices
How to clean Macs and other Apple hardware
Further details
Full categorised listing of Mac articles here.
Free tools available
Here is the downloadable PDF version with links to all the product pages:
AppSelectionChart
Thanks for installing f.lux.
Your f.lux installer is a .zip file - it should be in your Downloads folder. Install f.lux by double-clicking it.
Once f.lux is installed and running, you should see the f.lux Preferences window appear. Here, you can enter your location and set your usual wake time. f.lux uses this information to create a custom lighting schedule for you.
You can open up Preferences any time to view and change your f.lux settings.
The f.lux menu can always be found to the left of your system clock.
f.lux Preferences
Daytime is whenever the sun is up in your location. By default, f.lux is at 6500K during the daytime, and does not change your screen's color.
If you prefer very warm daytime colors, select Options> Expanded Daytime Settings from the f.lux menu.
Sunset is when the sun has set, but you are awake. If you are an early riser, this is also your pre-sunrise morning setting.
Sunset colors are designed to work well with normal warm white room lighting. If you usually wake up before sunrise, you might prefer a more moderate (4500K or brighter) Sunset setting.
Bedtime is the time before sleep when you're getting ready for bed (or already in it).
The Bedtime setting changes with your wake time. It removes as much alerting light from your screen as possible so that you can feel your body growing tired. You can go to sleep anytime with f.lux - whenever you feel sleepy.
. . .f.lux presets
The f.lux preferences window lets you change and preview settings. There are several presets you can choose from. f.lux will default to the Recommended colors preset.
Recommended colors: Use these for the first week while you get used to the change of colors and discover how you like to use f.lux.
Custom colors: Custom color control, click the time of day you want to change and then drag the slider to your preferred color temperature.
Classic f.lux: At sunset, f.lux will fade to 3400K, and turn off at sunrise. For large screens this setting is probably not strong enough to remove all alerting light.
Working late: for extreme night owls, removes solar timing and gives 14 hours of bright waking light.
. . .Location
For most machines, f.lux can automatically detect your location with OS X Location Services.
You can also use postal codes (US only), the name of a nearby city, or map coordinates (find them on the map at justgetflux.com/map.html).
If you've been traveling, you might need to update your location. Make sure your computer's internal Timezone settings are correct under System Preferences > Date & Time > Time Zone
. . .Options
Fast transitions: 20 second fade at sunrise and sunset. When unchecked, f.lux changes gradually over one hour.
Sleep in on weekends: For people who want brighter light later on Friday and Saturday nights (and sleep in on Saturday and Sunday mornings)
Extra hour of sleep (ages 13-18): Starts Bedtime one hour earlier for teens and other people who need a little more sleep
Expanded daytime settings: Warmer daytime settings (to 1900K) for people who want to reduce eyestrain or match office lighting
Backwards alarm clock: Calculates how many hours remain until your wake time and gives reminders every thirty minutes when it gets very late
Dim on disable: Gentle fade on disable so it hurts less to check colors
Color Effects
Darkroom: Removes 100% of blue and green light and inverts colors. Darkroom mode also preserves night vision while using a screen.
Light Consumed Mac Os Catalina
Movie mode: Lasts 2.5 hours. Preserves colors and shadow detail for watching movies with reduced alerting light.
OS X Dark theme at sunset: Uses the normal theme during the day and switches to dark theme (dock and menu bar) each night at sunset. Disabling f.lux will also disable dark theme.
Disable
For an hour: Disables f.lux for one hour and returns your screen to its normal setting.
Until sunrise: Disables f.lux until your local sunrise.
For current app: Open the app you want to disable f.lux for, then choose this option to disable f.lux whenever a particular app becomes active. You can re-enable f.lux later by opening the app and unchecking this option.
If you often check colors after dark, you might like to use the Dim On Disable setting under Options.
Light Consumed Mac Os 11
. . .About f.lux
This is where to find what version you have installed, see our contact information, and get a measurement of your screen's current brightness.
Quit f.lux
This will quit the f.lux process and remove the f.lux icon from your menubar. Always quit f.lux before uninstalling or deleting files.
. . .Troubleshooting: Answers to some common OS X questions
Installing
- Click the f.lux Mac download link.
- Click the zip file to expand it
- Double click the 'Flux' application in your Finder window.
- Enter your location and wake time
Uninstalling
- Go to the f.lux Settings panel (to the left of your system clock)
- Choose 'Quit f.lux'
- In Finder, search for 'Flux' and select and delete the f.lux app by dragging it to the trash
Uninstalled but can't delete files
- Open Activity Monitor and select Flux
- Choose Force Quit
- Delete f.lux app by dragging it to the trash
Quit f.lux but the color still remains
Rebooting often fixes any problems with color tint. But if that does not help you, try the following:
- Open Activity Monitor and verify there is no 'Flux' process running
- In Finder, open System Preferences> Displays> Color
- Delete the f.lux profile
- Reboot if needed
Other video display issues
Some Macbooks were recalled for problems with video hardware. You can check if your model is on the list at: https://www.apple.com/support/macbookpro-videoissues/
Light Consumed Mac Os Download
Flashing
On dual-GPU machines we write an ICC profile in order to make the 'switch' between video cards more seamless. In some older machines, and every so often, this doesn't work so well. You can use gfx.io to lock to one card, or to read about how this system works and disable if you want, check out our f.lux profile + prefs article.
If you still have questions about f.lux or need more help, you can check our FAQ or ask a question in our support forum.
