Updating regzbot after newer findings and determinations about the possible culprit commit #regzbot title: 6.4 and higher causes audio distortion #regzbot introduced: v6.4-rc1..1bf83fa6654c https://bugzilla.kernel.org/show_bug.cgi?id=217673#c5 On Sat, Jul 15, 2023 at 3:56 AM Bagas Sanjaya <bagasdotme@xxxxxxxxx> wrote: > Hi, > > I notice a regression report on Bugzilla [1]. Quoting from it: > > > I have a Lenovo ThinkPad X1 Yoga Gen 7 running Arch Linux. Linux 6.4 and > higher, cause audio distortion. Sometimes, this occurs to the point that > nearly nothing is discernible. This carries over to wired headphones. The > issue occurs on the entire mainline 6.4.x kernel series and also the 6.4.3 > stable and 6.5 RC1 kernel, which are the latest at the time of writing. The > issue occurs on both the Arch distributed kernels, and the mainline kernels. > > > > Linux kernels 6.3.x are not affected and neither is the 6.1 LTS kernel > series which is what I am temporarily using. On Windows 10/11 too, the > audio works as it should. This indicates that my hardware is not at fault. > Bluetooth audio is not impacted from my testing, either. > > > > The distortion doesn't start immediately. It either occurs automatically > after a random amount of time, or when I increase/decrease the volume, or > when I skip forward/backward to a section. In order to stop the distortion, > I have to either increase/decrease the volume until it stops, or skip > forward/backward until it stops, or restart Pipewire via systemd, however > it starts again due to one of the aforementioned reasons. > > > > At the time of this report, I am running Pipewire 0.3.74 and Wireplumber > 0.4.14. This also doesn't seem like a Pipewire/Wireplumber issue, since > these same versions work fine on the 6.1 LTS kernels without causing any > audio distortion. > > > > I wrote about this on the Arch Linux forums, too, and seems like at > least two other people are facing this issue. Here's the forum post: > https://bbs.archlinux.org/viewtopic.php?id=287068 > > > > Furthermore, I filed a bug report on the Arch Linux Bug Reporter, where > they suggested that the issue is a kernel regression and should be reported > upstream, here. Here's the bug report that I filed on the Arch Linux Bug > Reporter for anyone interested: > https://bugs.archlinux.org/task/79081?project=1&pagenum=10 > > > > I have attached the dmesg outputs of the mainline 6.5 RC1 kernel. > > > > Here's some audio related hardware information from my device: > > > > inxi -A > > > > Audio: > > Device-1: Intel Alder Lake PCH-P High Definition Audio > > driver: sof-audio-pci-intel-tgl > > API: ALSA v: k6.5.0-rc1-1-mainline status: kernel-api > > > > > > pactl info > > > > Server String: /run/user/1000/pulse/native > > Library Protocol Version: 35 > > Server Protocol Version: 35 > > Is Local: yes > > Client Index: 138 > > Tile Size: 65472 > > User Name: tux > > Host Name: NSA-Terminal-4 > > Server Name: PulseAudio (on PipeWire 0.3.74) > > Server Version: 15.0.0 > > Default Sample Specification: float32le 2ch 48000Hz > > Default Channel Map: front-left,front-right > > Default Sink: > alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp__sink > > Default Source: > alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp_6__source > > Cookie: f9dc:5e7a > > > > > > I can't figure out why this is happening. Kindly ask for any more > information that is necessary. Thank you. > > See Bugzilla for the full thread and attached dmesg. > > Anyway, I'm adding it to regzbot so that it doesn't fall through > cracks unnoticed: > > #regzbot introduced: v6.3..v6.4 > https://bugzilla.kernel.org/show_bug.cgi?id=217673 > #regzbot <https://bugzilla.kernel.org/show_bug.cgi?id=217673#regzbot> > title: PipeWire + Wireplumber audio distortion on Lenovo ThinkPad X1 Yoga > Gen 7 > #regzbot link: https://bbs.archlinux.org/viewtopic.php?id=287068 > #regzbot link: https://bugs.archlinux.org/task/79081?project=1&pagenum=10 > > Thanks. > > [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217673 > > -- > An old man doll... just what I always wanted! - Clara >
