Evening! Tonight I've been trying to get an RTL-SDR dongle working using this wiki article: https://wiki.gentoo.org/wiki/Rtl-sdr
I set up everything according to the article, and then tried to run 'rtl_test'. This worked fine as root, but not as my regular user. It gave me the following error message: > $ rtl_test > Found 1 device(s): > 0: �+.B�, , SN: > > Using device 0: Generic RTL2832U OEM > usb_open error -3 > Please fix the device permissions, e.g. by installing the udev rules file > rtl-sdr.rules > Failed to open rtlsdr device #0. This is despite having added my user to the 'sdr' group. I googled around, but couldn't figure anything out (everybody else seems to forget about the udev rule, but I didn't). Then I did the following: > $ ls -la /dev/rtl_sdr > lrwxrwxrwx 1 root root 15 Oct 3 23:19 /dev/rtl_sdr -> bus/usb/001/010 > $ ls -la /dev/bus/usb/001/010 > crw-rw---- 1 root plugdev 189, 9 Oct 3 23:19 /dev/bus/usb/001/010 So for some reason the group is 'plugdev'. When I added my user to that group everything works fine, but I don't understand why it gets added to that group? Is there some kind of conflict going on here? The udev rule from the article is the only udev rule I have (at least in /etc/udev/rules.d). Mvh, Markus
