lsusb -v fails when pavucontrol (PulseAudio Volume Control) is open and there is a Dell AC511 soundbar attached

Bug #1749465 reported by Veron Rado on 2018-02-14
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
usbutils (Ubuntu)
Undecided
Unassigned

Bug Description

If pavucontrol "PulseAudio Volume Control" is open it causes 'sudo lsusb -v' to fail if there is a Dell AC511 soundbar attached via USB.

The error message:
> $ sudo lsusb -v
>
> ----[ snip ]----
>
> Bus 001 Device 002: ID 413c:a503 Dell Computer Corp.
> lsusb: gconv.c:74: __gconv: Assertion `outbuf != NULL && *outbuf != NULL' failed.
> Aborted

lsusb -v by device ID:
> $ sudo lsusb -v -d 413c:a503
>
> Bus 001 Device 002: ID 413c:a503 Dell Computer Corp.
> lsusb: gconv.c:74: __gconv: Assertion `outbuf != NULL && *outbuf != NULL' failed.
> Aborted

The bug goes away when "PulseAudio Volume Control" is closed.

Ubuntu 17.10
Linux 4.13.0-32-generic x86_64
pavucontrol version 3.0-3.1
lsusb (usbutils) 007

Veron Rado (junket) on 2018-02-14
summary: - lsusb -v to fails when pavucontrol (PulseAudio Volume Control) is open
- and there is a Dell AC511 soundbar attached
+ lsusb -v fails when pavucontrol (PulseAudio Volume Control) is open and
+ there is a Dell AC511 soundbar attached
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