The provided kernel has swapped the speaker and headphone channels. The Headphone channel in alsamixer is controlling the laptop speakers! If you need some alsa dumps to aid in correctly mapping the channels do not hesitate to ask.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1721345 Title: ALC295 codec seems to have Master and PCM channels swapped Status in linux package in Ubuntu: Confirmed Bug description: 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1721345/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
