Rocket69 Posted December 23, 2020 Share Posted December 23, 2020 Hello, With the new version for rockpi 4 (Buster Kernel 5.X). I put in my armbianEnv.txt: overlays=uart2 console=display my ttyS2 has a very weird permission compared to other, (on the other hand I don't have this problem at all on a 4.X kernel) crw-rw---- 1 root dialout 4, 64 Dec 23 14:00 /dev/ttyS0 crw-rw---- 1 root dialout 4, 65 Dec 23 14:00 /dev/ttyS1 crw--w---- 1 root tty 4, 66 Dec 23 14:01 /dev/ttyS2 crw-rw---- 1 root dialout 4, 67 Dec 23 14:00 /dev/ttyS3 crw-rw---- 1 root dialout 4, 68 Dec 23 14:00 /dev/ttyS4 crw-rw---- 1 root dialout 4, 69 Dec 23 14:00 /dev/ttyS5 crw-rw---- 1 root dialout 4, 70 Dec 23 14:00 /dev/ttyS6 crw-rw---- 1 root dialout 4, 71 Dec 23 14:00 /dev/ttyS7 how do i get my uart2 to work properly? Namely that I have already tested adding the tty groups to my user. made a chmod 660 on the S2 but it does not hold. Tks ;) 0 Quote Link to comment Share on other sites More sharing options...
JMCC Posted December 23, 2020 Share Posted December 23, 2020 If you are more specific about the error messages, provide logs, and the output of "armbianmonitor -u", you have more chances that anyone can help you. 0 Quote Link to comment Share on other sites More sharing options...
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