Ubuntu is intentionally designed to automatically prefer the USB (or
Bluetooth) audio over the internal audio.
It sounds like you want to disable that feature, so just remove/comment
these lines from /etc/pulse/default.pa:
### Use hot-plugged devices like Bluetooth or USB automatically (LP: #1702794)
.ifexists module-switch-on-connect.so
load-module module-switch-on-connect
.endif
** Changed in: pulseaudio (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1773549
Title:
Pulse audio does not remember default sink
Status in pulseaudio package in Ubuntu:
Triaged
Bug description:
It seems like pulseaudio is picking the wrong audio sink as a default
in different scenarios.
On my computer I have the default onboard Intel HDA audio as well as a
USB headset. On the network, there is one pulse instance advertising
itself.
I always set the onboard audio as the default audio sink. However,
after every reboot or resume or `pulseaudio -k`, the wrong sink is
picked (and the one I set previously is *not* picked).
When I enable discovery of remote pulse instances, sometimes the one
on my network is picked as default, but sometimes my headset is picked
instead of the onboard sink. Then again, if I disable discovery
sometimes the onboard sink gets picked as default. There seems to be
no clear pattern on when it selects what.
I have even entered the following in /etc/pulse/default.pa:
set-default-sink alsa_output.pci-0000_00_1b.0.analog-stereo
set-default-source
alsa_input.usb-SteelSeries_SteelSeries_Arctis_7-00.analog-mono
But this doesn't have any effect at all.
I also noticed that *sometimes*, pulse updates the file at
`~/.config/pulse/f8a78acf499a402aa80f90af9ef5c15c-default-sink` to
point to the correct audio sink that I selected in `pavucontrol`, but
not always. Even if I write to that file manually to select a default
sink, the file gets overwritten by pulse on the next start with the
default sink that it chose.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: pulseaudio 1:11.1-1ubuntu7
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset
nvidia
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: devkid 3487 F.... pulseaudio
/dev/snd/controlC2: devkid 3487 F.... pulseaudio
/dev/snd/pcmC0D0p: devkid 3487 F...m pulseaudio
/dev/snd/controlC0: devkid 3487 F.... pulseaudio
CurrentDesktop: MATE
Date: Sat May 26 17:07:55 2018
ExecutablePath: /usr/bin/pulseaudio
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/07/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V2.13
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z77A-G43 (MS-7758)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrV2.13:bd03/07/2014:svnMSI:pnMS-7758:pvr1.0:rvnMSI:rnZ77A-G43(MS-7758):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7758
dmi.product.version: 1.0
dmi.sys.vendor: MSI
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.pulse.default.pa: 2018-05-26T17:01:12.271701
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