ubertooth-btle: lell_pcap_ppi_create_file: Permission denied

[abcde-r]

Steps to reproduce

I have the same issue as #413 which was just closed because of inactivity.

I am following the Ubertooth w/ Wireshark instructions from here: https://ubertooth.readthedocs.io/en/latest/capturing_BLE_Wireshark.html but the issue seems to be with ubertooth, not wireshark.

Expected behaviour

Ubertooth streaming packets to /tmp/pipe for wireshark to parse.

Actual behaviour

Without sudo:

ubertooth-btle -f -c /tmp/pipe
libUSB Error: Access denied (insufficient permissions):  (-3)
could not open Ubertooth device

With sudo:

sudo ubertooth-btle -f -c /tmp/pipe
ubertooth-btle: lell_pcap_ppi_create_file: : Permission denied

Version information

Operating system: I am on Ubuntu 20.04 LTS

Ubertooth tools version (ubertooth-rx -V): libubertooth 1.1 (2018-12-R1)

libbtbb version: libbtbb 1.0 (2018-06-R1)

Ubertooth firmware version (ubertooth-util -v): Firmware version: git-15e931f (API:1.05)

Output

sudo ubertooth-btle -f -c /tmp/pipe
ubertooth-btle: lell_pcap_ppi_create_file: : Permission denied

Note: Per #255 I did sudo adduser user plugdev but the issue persists even after that.

[abcde-r]

I'm not quite sure how I fixed this, because I was fighting with other errors for wireshark not launching correctly, but some steps that were involved in debugging were:

chmod +x /usr/bin/dumpcap sudo adduser user wireshark

[w3b5h3ll]

I run it by root permission. All is fine.