topic Re: Linux IMX53 - Console / screen blanking... in i.MX Processors

Linux IMX53 - Console / screen blanking...

MichaelGale — Fri, 20 Jan 2012 16:06:35 GMT

Does anyone know how to disable the console / screen blanking on this platform? Every ten minutes, the screen just turns off and the frame-buffer gets cleared. I do not have the "setterm" command available in the BSP.

I do not know how to add "CONSOLEBLANK=0" to the boot parameters. Does anyone know if this will work? Which u-boot header file should be edited?

Thanks,

Michael

Re: Linux IMX53 - Console / screen blanking...

sidebranch — Fri, 20 Jan 2012 16:18:12 GMT

once:
echo -e -n '\033[9]' > /dev/tty0

forever:

echo 0 > /sys/class/graphics/fb0/blank

Regards,

Leon.

Re: Linux IMX53 - Console / screen blanking...

MichaelGale — Fri, 20 Jan 2012 18:33:21 GMT

Thanks Leon! Just a note for anyone else, the first option works but the second does not.

Re: Linux IMX53 - Console / screen blanking...

sidebranch — Fri, 20 Jan 2012 18:49:06 GMT

The second one works for me and disables blanking permanently (AFAICR).

However, you need to be root (sudo -s) before you run it.

Leon.

Re: Linux IMX53 - Console / screen blanking...

harryflink — Wed, 09 Jan 2013 00:43:37 GMT

The "echo 0 > /sys/class/graphics/fb0/blank" tricked worked for iMX28 CPU project too to avoid screen blanking every 10 minutes.

Thank you for the solution, Leon!