Even if you removed your custom rules, there might still be a default rule that triggers for that device. Maybe try searching through the config files in rules.d for the vendor:product IDs of that particular adapter.
On Mon, Nov 26, 2018 at 2:32 PM Galen Seitz <[email protected]> wrote: > Hi, > > When I connect a Prolific-based USB serial adapter to my CentOS 7 > machine, the corresponding ttyUSB device has dialout group ownership. > > [root@toto ~]# ls -l /dev/ttyUSB* > crw-rw----. 1 root dialout 188, 0 Nov 26 14:15 /dev/ttyUSB0 > > However, when I connect an FTDI-based serial adapter, the device has > root group ownership. > > [root@toto ~]# ls -l /dev/ttyUSB* > crw-rw----. 1 root dialout 188, 0 Nov 26 14:15 /dev/ttyUSB0 > crw-rw----+ 1 root root 188, 1 Nov 26 14:16 /dev/ttyUSB1 > > Note the trailing '+' on the permissions. It appears something is > setting up an ACL, but only for the FTDI. > > [root@toto ~]# getfacl /dev/ttyUSB1 > getfacl: Removing leading '/' from absolute path names > # file: dev/ttyUSB1 > # owner: root > # group: root > user::rw- > user:galens:rw- > group::rw- > mask::rw- > other::--- > > The ACL suggests that I should have rw access, but kermit can't open the > port. > > Note that I removed all of my custom udev rules and ran udevadm control > --reload-rules before performing this test. > > I can sudo to workaround the problem, but I shouldn't have to. Any > ideas as to what is going on? > > > thanks, > galen > -- > Galen Seitz > [email protected] > _______________________________________________ > PLUG mailing list > [email protected] > http://lists.pdxlinux.org/mailman/listinfo/plug > _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
