check the directory /etc/udev/rules.d/ for 99-realsense-libusb.rules

generate file 99-realsenses-libusb. rules, copy the content as follows, then move the file to /etc/udev/rules.d/

##Version=1.1##
# Device rules for Intel RealSense devices (R200, F200, SR300 LR200, ZR300, D400, L500, T200)
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0a80", MODE:="0666", GROUP:="plugdev", RUN+="/usr/local/bin/usb-R200-in_udev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0a66", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0aa5", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0abf", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0acb", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ad0", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="04b4", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ad1", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ad2", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ad3", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ad4", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ad5", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ad6", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0af2", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0af6", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0afe", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0aff", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b00", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b01", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b03", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b07", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b0c", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b0d", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b3a", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b3d", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b48", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b49", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b4b", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b4d", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b52", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b5b", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b5c", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b64", MODE:="0666", GROUP:="plugdev"

# Intel RealSense recovery devices (DFU)
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ab3", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0adb", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0adc", MODE:="0666", GROUP:="plugdev"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b55", MODE:="0666", GROUP:="plugdev"

# Intel RealSense devices (Movidius, T265)
SUBSYSTEMS=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="8087", ATTRS{idProduct}=="0af3", MODE="0666", GROUP="plugdev"
SUBSYSTEMS=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="8087", ATTRS{idProduct}=="0b37", MODE="0666", GROUP="plugdev"
SUBSYSTEMS=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="03e7", ATTRS{idProduct}=="2150", MODE="0666", GROUP="plugdev"

KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ad5", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor_custom", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0ad5", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0af2", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0af2", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0afe", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor_custom", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0afe", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0aff", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor_custom", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0aff", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b00", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor_custom", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b00", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b01", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor_custom", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b01", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b3a", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b3a", RUN+="/bin/sh -c ' chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b3d", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b3d", RUN+="/bin/sh -c ' chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b4b", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b4b", RUN+="/bin/sh -c ' chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b4d", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b4d", RUN+="/bin/sh -c ' chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b5b", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b5b", RUN+="/bin/sh -c ' chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b5c", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b5c", RUN+="/bin/sh -c ' chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"
KERNEL=="iio*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b64", MODE:="0777", GROUP:="plugdev", RUN+="/bin/sh -c 'chmod -R 0777 /sys/%p'"
DRIVER=="hid_sensor*", ATTRS{idVendor}=="8086", ATTRS{idProduct}=="0b64", RUN+="/bin/sh -c ' chmod -R 0777 /sys/%p && chmod 0777 /dev/%k'"

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