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$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 24.10
Release:        24.10
Codename:       oracular
$ uname -a
Linux prestige 6.11.0-13-generic #14-Ubuntu SMP PREEMPT_DYNAMIC Sat Nov 30 
23:51:51 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

steps to reproduce:
1. obtain a laptop and external monitor with speakers, connect through 
usbc[laptop]<->hdmi[monitor] cable
2. configure ubuntu to use only external hdmi monitor (also for sound, but it 
was automatic in my case)
3. open firefox and go to https://www.programmersmusic.com/browse/radio/
4. start listening to a radio there
5. adjust volume through the widget in upper right corner of the screen to, for 
example, 1/3 of maximum
6. leave workplace untouched to make hdmi monitor go to sleep (no any specific 
sleep configuration, just ubuntu defaults)
7. sound switches to the laptop (that's OK)
8. move your mouse/type on the keyboard to wake up the monitor and make sound 
go back through it
9. your volume is not 1/3 as you had configured before, your volume is now 100%

expected behaviour:
monitor should come back from sleep with the volume which user had configured 
before it went to sleep

actual behaviour:
monitor comes back from sleep with the maximum 100% volume

other OSes:
I tested windows 11 with the same hardware - with it monitor comes back from 
sleep with the volume which had been configure before, not 100%.

ProblemType: Bug
DistroRelease: Ubuntu 24.10
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 6.11.0-13.14-generic 6.11.0
Uname: Linux 6.11.0-13-generic x86_64
ApportVersion: 2.30.0-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/seq:        misha      2863 F.... pipewire
 /dev/snd/pcmC0D3p:   misha      2863 F...m pipewire
 /dev/snd/controlC0:  misha      2863 F.... pipewire
                      misha      2868 F.... wireplumber
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Jan 15 20:19:59 2025
InstallationDate: Installed on 2025-01-14 (1 days ago)
InstallationMedia: Ubuntu 24.10 "Oracular Oriole" - Release amd64 (20241009.4)
MachineType: Micro-Star International Co., Ltd. Prestige 14Evo A12M
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/zsh
 TERM=tmux-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/30/2022
dmi.bios.release: 1.22
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: E14C6IMS.116
dmi.board.asset.tag: Default string
dmi.board.name: MS-14C6
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: REV:1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: N/A
dmi.modalias: 
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrE14C6IMS.116:bd05/30/2022:br1.22:svnMicro-StarInternationalCo.,Ltd.:pnPrestige14EvoA12M:pvrREV1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMS-14C6:rvrREV1.0:cvnMicro-StarInternationalCo.,Ltd.:ct10:cvrN/A:sku14C6.1:
dmi.product.family: Prestige
dmi.product.name: Prestige 14Evo A12M
dmi.product.sku: 14C6.1
dmi.product.version: REV:1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug oracular wayland-session
-- 
sound volume is maximized to 100% when hdmi monitor with speakers is back from 
sleep
https://bugs.launchpad.net/bugs/2095025
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