Public bug reported: [Impact] More Dell Pro QCx1255 systems have headphone pop noise when using Pipewire audio server on Ubuntu 24.04. The noise appears when headphones are plugged in. The issue does not occur with Pulseaudio.
[Fix] Apply the quirk ALC236_FIXUP_DELL_HP_POP_NOISE for more Dell Pro QCx1255 systems to route headphone output to DAC 0x2, which eliminates the popping sound. Upstream commit: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?h=for- linus&id=9573818cc1b7ac22176d0a2b60bfbc440e94f7d5 [Test Plan] 1. Boot Dell Pro QCx1255 with Ubuntu 24.04 and Pipewire audio server 2. Plug in headphones 3. Without patch: popping/crackling noise heard through headphones 4. With patch: no popping noise, clean audio output [Where problems could occur] Only take effect on particular SSIDs. The risk of regression should be low ** Affects: hwe-next Importance: Undecided Status: New ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Affects: linux-oem-6.17 (Ubuntu) Importance: Undecided Status: New ** Affects: linux (Ubuntu Noble) Importance: Undecided Status: Invalid ** Affects: linux-oem-6.17 (Ubuntu Noble) Importance: Undecided Status: In Progress ** Affects: linux (Ubuntu Resolute) Importance: Undecided Status: In Progress ** Affects: linux-oem-6.17 (Ubuntu Resolute) Importance: Undecided Status: Invalid ** Tags: jira-wtn-435 oem-priority wtn ** Also affects: linux-oem-6.17 (Ubuntu) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: linux-oem-6.17 (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Resolute) Importance: Undecided Status: New ** Also affects: linux-oem-6.17 (Ubuntu Resolute) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Resolute) Status: New => In Progress ** Changed in: linux (Ubuntu Noble) Status: New => Invalid ** Changed in: linux-oem-6.17 (Ubuntu Noble) Status: New => In Progress ** Changed in: linux-oem-6.17 (Ubuntu Resolute) Status: New => Invalid ** Tags added: jira-wtn-435 oem-priority wtn -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2163293 Title: Fix noise of audio output on more Dell QCx1255 models after reboot To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2163293/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
