Hi Lorenzo, thank you for taking the time opening this bug report. 1) If you plug the headphones in to the computers headphone out jack rather than the monitor, does it have the issue as well?
2) Also, Have you tried any earlier 6.8 kernels which did not have this issue, or did you upgrade straight from the 6.5 based kernel to the 6.8 kernel? 3) What happens if you boot the machine without the headphones plugged in at all, and only plug them in after it boots? Is the level low and distorted, or fine? 4) One other thing that might be very useful to try, is to print the kernel messages out, and clear them, and then unplug the headphones, and then plug them back in. and dump the kernel messages. This would be the most useful test I think. The steps would be: ----- sudo dmesg -c |tee messages-before-test.log echo 7 | sudo tee /proc/sys/kernel/printk ---unplug-headphones--- ---wait-30-seconds--- ---plug-head-phones-in--- sudo dmesg |tee messages-after-test.log ----- This will print the kernel messages and clear the buffer, increase the kernel logging level so more info is printed out, and then after unplugging and plugging in the headphones will print out the kernel messages again. The 30 second wait between unplugging and plugging is to help see any differences in any kernel messages to keep things a little easier to read. If you can do that test, and attach the logs, that would help. If you did it just on the 6.8 kernel that would be alright, but doing it for both the working 6.5, and the failing 6.8 kernel would really really really help and hopefully describe what is happening a bit. If there isn't anything in the logs, then I will need to come up with another way to watch the behaviour, but I'm hoping this will work. ** Changed in: linux-hwe-6.8 (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-6.8 in Ubuntu. https://bugs.launchpad.net/bugs/2077221 Title: Audio in headphone is very low and distorted at startup. Status in linux-hwe-6.8 package in Ubuntu: New Bug description: Ubuntu 22.04.4 LTS The audio in my headphones is very low and distorted at startup. When I unplug and plug them back into the jack, the sound returns to normal. I'm using an external HDMI monitor, and initially, I thought it was a default issue with PulseAudio, but that doesn't seem to be the case. EDIT: I downgraded from kernel 6.8.0-40-generic to 6.5.0-45-generic, and this solved the issue. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: alsa-base 1.0.25+dfsg-0ubuntu7 ProcVersionSignature: Ubuntu 6.8.0-40.40~22.04.3-generic 6.8.12 Uname: Linux 6.8.0-40-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lorenzo 1538 F.... pulseaudio /dev/snd/controlC1: lorenzo 1538 F.... pulseaudio CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sat Aug 17 10:47:54 2024 InstallationDate: Installed on 2023-07-26 (387 days ago) InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic_1 successful Symptom_Card: Family 17h (Models 10h-1fh) HD Audio Controller - HD-Audio Generic Symptom_Jack: Black Headphone Out, Front Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: None of the above Title: [Aspire A515-45, Realtek ALC256, Black Headphone Out, Front] Playback problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/09/2021 dmi.bios.release: 1.10 dmi.bios.vendor: INSYDE Corp. dmi.bios.version: V1.10 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Calla_LC dmi.board.vendor: LN dmi.board.version: V1.10 dmi.chassis.type: 10 dmi.chassis.vendor: Chassis Manufacturer dmi.chassis.version: Chassis Version dmi.ec.firmware.release: 1.4 dmi.modalias: dmi:bvnINSYDECorp.:bvrV1.10:bd12/09/2021:br1.10:efr1.4:svnAcer:pnAspireA515-45:pvrV1.10:rvnLN:rnCalla_LC:rvrV1.10:cvnChassisManufacturer:ct10:cvrChassisVersion:sku0000000000000000: dmi.product.family: Aspire 5 dmi.product.name: Aspire A515-45 dmi.product.sku: 0000000000000000 dmi.product.version: V1.10 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.8/+bug/2077221/+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
