Public bug reported:
When trying to use pulseaudio to control volume on my ASUS Zenbook Pro
UX550VE *uses AC295 audio codec) I noticed that pulseuadio is varying
the Master ALSA channel. If I vary that channel in alsamixer I get no
variation in volume. If I vary the PCM channel instead I get the desired
effect that volume buttons should have. Since pulseaudio varies the
Master channel by default and does not respect any configuration
settings telling it to use other settings, I suggest swapping these two
channels so that pulseaudio works out of the box.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: linux-image-4.13.0-12-generic 4.13.0-12.13 [modified:
boot/vmlinuz-4.13.0-12-generic]
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.7-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: dylan 1532 F.... pulseaudio
CurrentDesktop: GNOME
Date: Wed Oct 4 19:25:38 2017
HibernationDevice: RESUME=UUID=2b6908b4-d463-4170-9be5-556145c71a0e
InstallationDate: Installed on 2017-10-02 (1 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Beta amd64 (20171002)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2b Intel Corp.
Bus 001 Device 002: ID 13d3:5755 IMC Networks
Bus 001 Device 004: ID 04f3:0903 Elan Microelectronics Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. UX550VE
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-12-generic
root=UUID=aa3dfd29-caf8-4882-906e-1b31b672d2c2 ro quiet splash threadirqs
acpi_osi=! acpi_osi=Linux acpi_backlight=native vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.13.0-12-generic N/A
linux-backports-modules-4.13.0-12-generic N/A
linux-firmware 1.168
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/05/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX550VE.300
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX550VE
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrUX550VE.300:bd06/05/2017:svnASUSTeKCOMPUTERINC.:pnUX550VE:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX550VE:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: UX
dmi.product.name: UX550VE
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug artful
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https://bugs.launchpad.net/bugs/1721345
Title:
ALC295 codec seems to have Master and PCM channels swapped
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