5. Errors

If you find any error like this:

bcm2835-cpufreq:bcm2835_cpufreq_driver_target_index:183: Error occurred setting a new frequency (600000)
[  103.047857] cpufreq: __target_index: Failed to change cpu frequency: -22

Remove the error by adding these lines:

echo 1200000 > /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq

If the error still persists then try disconnecting and reconnecting.