Operating Systems OS X (Apple) MacOS 10.15 Catalina Crashes and Freezes on Boot Post 303037711 by Neo on Saturday 10th of August 2019 07:34:04 AM
Well, at least it is restored back to Mojave 10.14.6 Beta..... from my TM backup.

Test Your Knowledge in Computers #828
Difficulty: Medium
JSON and ECMAScript 2018 both allows the Unicode line terminators U+2028 LINE SEPARATOR and U+2029 PARAGRAPH SEPARATOR to appear unescaped in quoted strings.
True or False?

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ASMC(4) 						   BSD Kernel Interfaces Manual 						   ASMC(4)

asmc -- device driver for the Apple System Management Console (SMC) SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file: device asmc Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): asmc_load="YES" DESCRIPTION
The asmc driver controls the Apple System Management Console (SMC for short) found on Intel Apple systems. The SMC is known to be found on the following systems: o MacBook o MacBook Pro o Intel MacMini o Mac Pro o MacBook Air o Intel iMac With this driver, you can configure your keyboard backlight brightness, check temperatures of several sensors, check the speed of the inter- nal fans and check the status of the Sudden Motion Sensor. Variables related to the SMC control and inspection are exported via sysctl(3) under the device tree dev.asmc. KEYBOARD BACKLIGHT
On MacBook Pro systems, you can control the keyboard brightness by writing a value to the dev.asmc.%d.light.control sysctl MIB. The following sysctl MIBs contains the raw value returned by the left and right light sensors: dev.asmc.%d.light.left or dev.asmc.%d.light.right. TEMPERATURES
The number of temperature sensors and their description varies among systems. You can inspect the temperature sensors on your system by traversing the dev.asmc.temp sysctl MIB. All values are in degrees celsius. SYSTEM FANS
The dev.asmc.fan.%d sysctl tree contains the leaf nodes speed, safespeed, minspeed, maxspeed and targetspeed. Each of these leaf nodes rep- resent the current fan speed, the safest minimum fan speed, the mininum speed and the maximum speed respectively. All values are in RPM. SUDDEN MOTION SENSOR
The Sudden Motion Sensor (SMS for short) is a device that detects laptop movement and notifies the operating system via an interrupt. The sysctl MIBs present under dev.asmc.sms all relate to the SMS. The most interesting usage of this device is to park the disk heads when the laptop is moved harshly. First, you need to install ataidle(8) (ports/sysutils/ataidle) and then configure devd(8) the following way: notify 0 { match "system" "ACPI"; match "subsystem" "asmc"; action "/usr/local/sbin/ataidle -s X Y"; }; Do not forget to change the X and Y values in the command above. Also, please note that parking the disk heads too many times can dramatically reduce your hard drive's life span. Do not rely solely on the SMS to protect your hard drive: good care and common sense can increase your hard drive's life. SEE ALSO
ataidle(8) (ports/sysutils/ataidle), devd(8), sysctl(8) HISTORY
The asmc driver first appeared in FreeBSD 8.0. AUTHORS
Rui Paulo <rpaulo@FreeBSD.org> (Google Summer of Code project). BUGS
Support for the latest models was never tested and is most likely not fully working. BSD
July 27, 2009 BSD

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