** Package changed: fwupdate-signed (Ubuntu) => fwupd (Ubuntu)
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USB audio device is not recognized after startup in 16.04
Status in fwupd package in Ubuntu:
Status in fwupd source package in Xenial:
Status in fwupd source package in Yakkety:
High end USB audio devices don't work properly after fwupd is started from
Login to Ubuntu session and try to use a USB audio device. See if it works
If you are applying this upgrade and testing a regression it's important that
the device isn't in a bad state to start. To guarantee this doesn't happen:
1) Apply the update
2) Power off your machine
3) Unplug device
4) Plug in device
5) Power on machine
6) Check if it works.
This affects the DFU provider in Ubuntu. The fix is only made to that part
of the fwupd stack.
No firmware for DFU has been published to the LVFS yet, so this shouldn't
have any regression risk to Ubuntu.
I used the same USB audio device in all previous Ubuntu versions
(Focusrite Scarlet 2i2). It is supposed to be class compliant and
works an all distros flawless (even RPI2 and OSMC). After upgrading
from 15.10 to 16.04 it stopped to work: after start-up it does not
show up as an audio device at all (also not recognized by aplay -l). I
can workaround this by unplugging it and plugging it in again after
Ubuntu booted up (strangely 2 times unplug/re-plug). After 2nd time
plugging it in again it shows up and works great without any further
issues until next restart.
Maybe worth to note that I recognized today that fwupd uses
continuously 100% CPU load, so I just killed it today. My Hardware
(Main-board/CPU) is a bit older (Intel E8400), so could probably be
some compatibility issue...
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic i686
NonfreeKernelModules: nvidia_modeset nvidia
USER PID ACCESS COMMAND
/dev/snd/pcmC1D0p: tobias 1553 F...m pulseaudio
/dev/snd/controlC1: tobias 1553 F.... pulseaudio
/dev/snd/controlC0: tobias 1553 F.... pulseaudio
/dev/snd/controlC2: tobias 1553 F.... pulseaudio
Date: Sat Apr 23 20:09:04 2016
InstallationDate: Installed on 2015-09-19 (217 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release i386 (20150422)
UpgradeStatus: Upgraded to xenial on 2016-04-22 (0 days ago)
dmi.bios.vendor: American Megatrends Inc.
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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