Hello again. This is a continuation of comment #185 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850439/comments/185 where we describe hardware, symptoms, then #186 where we describe the permanent fix we did.
## Other problem: "nasal" sound on speakers only We noticed that some applications have normal sound (e.g. youtube in Firefox), while some others have a kind of "nasal" sound (e.g. VLC playing the same audio). I would describe the effect as similar to a very slight clipping producing high frequencies. It is relatively subtle, just as if the laptop speakers had worse quality. The problem is observed only on machine speakers, and not on analog jack output. ## Investigation We reproduced the problem using mpv. Then we tried to disable pulseaudio and have mpv play directly through alsa, which cured the problem but, well, killed all pulseaudio features. Then we instructed pulseaudio to use 48000 output sample rate, which allowed to cure the problem and allow pulseaudio. ## Local fix: force pulseaudio sample rate The fix we used is like this: In /etc/pulse/daemon.conf ensure there is a line like: default-sample-rate = 48000 Then "pulseaudio -k" to ensure no daemon with old settings exist. You might have to run "pulseaudio &" too, depending on context. Anyway, with this change the "nasal sound" problem is fixed permanently in all applications. ## Global fix Thanks a lot to people working upstream if they can provide a non- regressing global fix without users having to figure out workaround. It might be hard and we thank you. -- 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/1850439 Title: No sound on ASUS UX534FT Status in linux package in Ubuntu: Confirmed Bug description: Hi, after instal Ubuntu in dual boot alongside Windows 10, I've realised there is no sound coming out of mine new ASUS Zenbook 15 UX534FT- AA024R in Ubuntu. In Windows there is no problem. Found this topic https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1810214 which had the same problem with driver for Realtek ALC294 which is also mine sound card. But even with this fix it is not working on UX534FT. Can you please add fix also for this newer model? Description: Ubuntu 18.04.3 LTS Release: 18.04 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-5.0.0-32-generic 5.0.0-32.34~18.04.2 ProcVersionSignature: Ubuntu 5.0.0-32.34~18.04.2-generic 5.0.21 Uname: Linux 5.0.0-32-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue Oct 29 15:11:25 2019 InstallationDate: Installed on 2019-10-29 (0 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) SourcePackage: linux-signed-hwe UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850439/+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
