Well, the "generic, experimental" driver just did not work. The other serial to usb driver did.
On 28 November 2017 at 21:39, John R. Hogerhuis <[email protected]> wrote: > > On Tue, Nov 28, 2017 at 9:34 PM Peter Vollan <[email protected]> wrote: >> >> Success at last!!! >> >> You guys were right about the permssions issue. Not only that... I >> change permissions on /dev/ttyUSB0 and it changes back for some >> reason? Well anyway "sudo" avoids that problem. > > > Usb devices are auto mounted using udev triggers / scripts. > > So whenever the device is plugged in it gets permissions set on that > trigger. > > To fix the permission problem you need your regular user to be added to > whichever group owns serial poets. > > Or you can fiddle with udev. One thing of value to do with udev is get a > given device... based on serial number or manufacturer to always show up as > the same device name. Then you don’t need to play guessing games. > >> >> I am afraid that, on top of that, the Radio Shack serial to USB cable >> did not work. I suspected as much when dmesg reported that it was >> using the generic driver which was only for experimental purposes. > > > Linux only has generic serial drivers. Generally there are two common usb > serial devices around: prolific and FTDI. Both seem to work fine with Linux. > > — John.
