I have written a driver for linux to communicate with
/dev/fb0. When system boots, The LCD turns on and displays random colors, but when
startx runs (that I expect desktop environment to be shown), LCD turns off and after a while this error is claimed through UART log:
cpufreq: __cpufreq_driver_target: Failed to change cpu frequency: -16
cpufreq_cpu0: failed to set clock rate: -16
what is the problem?