Unplugged Mac OS
Circle with a line through it
If your computer says that the network cable is unpluged, but in fact it is plugged in, there may be a temporary software glitch. This glitch can be resolved if you restart your computer. Restarting your computer will restart all the programs that were running on it. If you have to run another OS on your Mac, try using a virtual machine or booting from a USB device. Restart your Mac periodically. According to a couple of user reports, this issue popped up when a Mac that hasn’t been restarted for a while is rebooted. Fortunately, there are lots of Mac apps for tracking battery life on the App Store. UnPlugged is a lightweight but quite versatile utility designed to notify you about the current battery life percentage and when the power cord is plugged in or out. Both OS X’s Notification Center and Grow are supported. The SMC in your Mac is the System Management Controller, a low-level component of your Mac hardware that controls and manages system hardware. Resetting the SMC is another tool in your toolbox of white screen solutions. The reset process is different for different Mac models, so be sure to read the section below pertaining to your Mac. Mar 18, 2021 The SMC in your Mac is the System Management Controller, a low-level component of your Mac hardware that controls and manages system hardware. Resetting the SMC is another tool in your toolbox of white screen solutions. The reset process is different for different Mac models, so be sure to read the section below pertaining to your Mac.
Unplugged Mac Os Catalina
Learn what to do if your Mac starts up to a circle with a line through it (prohibitory symbol).
Question mark
Learn what to do if your Mac starts up to a question mark.
Options with a gear icon
Learn what to do if your Mac starts up to Options with a gear icon.
Blank (empty) screen
Learn what to do if your Mac starts up to a blank screen, such as an empty gray, black, or blue screen.
Apple logo
Learn what to do if your Mac starts up to an Apple logo or progress bar.
Globe with alert symbol
A globe with an exclamation point means that your Mac tried to start up from macOS Recovery over the Internet, but couldn't. Learn what to do if your Mac can't start up from macOS Recovery.
Lock icon
If your Mac is using a firmware password, the lock icon appears when you try to start up from another disk or volume, such as an external drive or macOS Recovery. Enter the firmware password to continue.
System lock PIN code
Your Mac asks for a PIN code when it has been remotely locked using Find My. Enter the four-digit or six-digit passcode to continue.
Login window
At the login window, enter your user account password to log in to your Mac. If FileVault is turned on, this also unlocks your disk. You might see a default desktop picture in the background, which might change to your chosen desktop picture when you select your account.
Thunderbolt, USB, or FireWire symbol
A large Thunderbolt , USB , or FireWire symbol against a dark background means that your Mac is in target disk mode. Solar radio mac os.
Learn more
- Learn what to do if your Mac displays a message that it restarted because of a problem.
- When starting up from Windows using Boot Camp, your Mac doesn't show an Apple logo or the other macOS screens in this article.
Similarly to the Windows equivalent, in the Apple Task Manager you can easily closeprograms that are frozen or hanging. But if you want more details about a problem, you’ll need to open the Mac Activity Monitor. This lets you kill unused or unresponsive applications, and consult statistics on CPU and memory load, and energy use. But how do you open the Task Manager on a Mac? And what information is shown in the Activity Monitor? We’ve put together a step-by-step guide to help you out.
- Mac Activity Monitor and CPU load
Force quitting programs using the Mac Task Manager
The Mac Task Manager is a mini-version of the Activity Monitor. To open it, simultaneously press down the [CMD] + [ALT] + [ESC] keys on your keyboard. This will open a window containing a list of all currently opened programs and applications that are running in the background. Select the program or application that has frozen and click on the “Force Quit” button to close it.
The Alt key is also referred to as the Option key. In fact, on some keyboards it is actually labeled “Option”.
Mac Activity Monitor and CPU load
Like the Task Manager, the Mac Activity Monitor also lists all of the processes that are running on the system. You can open it by going into Applications and selecting Utilities, or searching for it directly in Spotlight by clicking on the magnifying glass in the upper-right corner of the menu bar.
The Mac Activity Monitor is split into several sections: CPU, Memory, Energy, Disk, Network, and (in later versions) Cache. The list of processes includes user apps, system apps used by the operating system, and invisible background processes. You can choose which columns to display and filter the processes by going into the “View” menu. As well as the Mac Activity Monitor, you can also install other programs such as htop to manage system processes.
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CPU pane
The “CPU” pane shows how different processes are affecting CPU performance. Alongside the stats in the “Energy” pane, this information can help you work out what processes are affecting the performance, battery runtime, temperature and fan activity of your Mac. Just below the main window, you will see an additional section containing the following information: Os x snow leopard free for mac.
- System: Percentage of CPU capability currently being used by system processes.
- User: Percentage of CPU capability currently being used by apps or processes launched by the user.
- Idle: Percentage of CPU capability not in use.
- CPU Load: Percentage of CPU capability currently being used by all processes (System and User combined).
- Threads: Total number of threads used across all processes.
- Processes: Total number of processes that are currently running.
When you open the Activity Monitor, you might notice that the CPU load for the kernel_task process is rather high, and also that the fan is working harder than usual. One of the roles of kernel_task is to regulate the temperature of the CPU.
Mac Os Versions
Memory pane
The Memory pane of the Mac Activity Monitor tells you how memory is currently being used. The section at the bottom shows the following statistics:
Unplugged Mac Os Download
- Memory Pressure: This is a graph that illustrates the availability of memory resources.
- Physical Memory: Total amount of RAM installed.
- Memory Used: Total amount of RAM currently in use.
- App Memory: Total amount of memory currently being used by apps and their processes.
- Wired Memory: Memory that cannot be compressed or paged out to the hard drive and that must therefore remain in RAM.
- Compressed: Amount of RAM that is compressed to make space for other processes.
- Swap Used: Space that the memory management system of the OS is using on your startup drive.
- Cached Files: Memory that was recently used by apps but is now available to other apps.
Energy pane
The “Energy” pane provides information on overall energy use and tells you how much energy is being used by each app. As in the other views, you can click the column headings to sort the processes according to the values measured. The bottom pane shows the following:
- Energy Impact: Total energy used by all apps.
- Graphics Card: Type of graphics card installed.
- Remaining Charge: Percentage of battery charge remaining.
- Time Until Full: Amount of time the Mac must be plugged into the mains before it is fully charged.
- Time on AC: Time elapsed since the Mac was plugged in.
- Time Remaining: Estimated amount of time the Mac can keep running on battery.
- Time on Battery: Time elapsed since the Mac was unplugged.
- Battery (Last 12 hours): Battery charge level over the last 12 hours.
Disk pane
The “Disk” pane shows how much data each process has read from or written to your disk. It also shows “reads in” and “writes out” (IO), that is, the number of times your Mac accesses the disk to read and write data. The information at the bottom of the “Disk” pane shows the total disk activity for all processes combined.
Network pane
Mac Os Mojave
In the “Network” pane you can see how much data your Mac is sending and receiving over the network. This allows you to identify processes that are sending or receiving the largest amounts of data. The information at the bottom of the “Network” pane shows the total network activity for all apps combined.
Cache pane
In macOS High Sierra 10.13.4 or later, the Activity Monitor has an additional pane called “Cache” (if Content Caching is enabled in the “Sharing” pane of System Preferences). This pane shows information such as how much cached content local network devices have uploaded, downloaded or dropped over time.
The information available in the Activity Monitor will depend on what Apple devices and macOS version you are using.