The problem can been solved by updating to the newest 4.19.x kernel. I am a Ubuntu user with Asus UX433FA. After a few testing, I can confirm that newer kernel 4.19.17 currently available in kernel.org is the solution (I tried out 4.19.8 as well but I experienced something else so I decided to use 4.19.17, which, by default, accepts the changes suggested by Jian-Hong).
However, I am using a dual boot system. There is a minor problem that bugs me: even if I turned off the fast boosting in BIOS, if I boot into Windows then restart and try to boot into Ubuntu, the sound will distort and disappear eventually. The solution would be completely shutdown Windows every time you want to switch between the OS. Hope this could be solved in the future. A good thing though, is after installing the new kernel, the original 4.15.x kernel that ships with Ubuntu 18.04 can also output sound properly !!! But, I have always got the feeling that the sound quality on Ubuntu is not as good as that of Windows. I might be over-sensitive tho. -- 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/1784485 Title: [ZenBook S UX391UA, Realtek ALC294, Mic, Internal] No sound at all Status in alsa-driver package in Ubuntu: Fix Committed Status in linux package in Ubuntu: Fix Committed Bug description: Internal speaker - not sound at all Cable Headphonse - realy quiet disorted sound Bluetooth headphones - sound works fine On Windows 10 everything works fine. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18 Uname: Linux 4.15.0-29-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pmichalski 7964 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Mon Jul 30 22:32:10 2018 InstallationDate: Installed on 2018-07-17 (12 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=pl_PL.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH failed Symptom_Card: Wbudowany dźwięk - HDA Intel PCH Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: gdm 2988 F.... pulseaudio pmichalski 7964 F.... pulseaudio Symptom_Jack: Mic, Internal Symptom_Type: No sound at all Title: [ZenBook S UX391UA, Realtek ALC294, Mic, Internal] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/18/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX391UA.204 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX391UA 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.:bvrUX391UA.204:bd05/18/2018:svnASUSTeKCOMPUTERINC.:pnZenBookSUX391UA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX391UA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: ZenBook S dmi.product.name: ZenBook S UX391UA 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/alsa-driver/+bug/1784485/+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
