Open Talkless opened 1 year ago
What are the permissions of /dev/dma_heap/linux,cma-uncached
(or /dev/dma_heap/linux,cma
if you have that instead)?
# ls -l /dev/dma_heap/
total 0
crw------- 1 root root 250, 1 Aug 11 05:12 linux,cma
crw------- 1 root root 250, 0 Aug 11 05:12 system
I've tried to launch Qt-base application that uses
qmlglsink
not as root:I had to add user to
video
group to accessfb0
at first, but it seems I need more permissions to utilize DMABuff on this imx8mm device..?Or is it impossible to use this feature at all not running root?