I figured out that the overlay0 was switched off, then I turned it on with
echo 1 > /sys/devices/platform/omapdss/overlay0/enabled
display starts to work.
سؤال
I got an android 4.2.2
running on the my device, based on the variscite var-som-om44. I need to test my screen now: I put the right timings in the /sys/devices/platform/omapdss/display0/timings
and it seems to be initialised, but it's black and nothing's there.
Question: How can I test my screen? How can I run some app?
المحلول
I figured out that the overlay0 was switched off, then I turned it on with
echo 1 > /sys/devices/platform/omapdss/overlay0/enabled
display starts to work.