Thanks for your response. To clarify: the internal microphone is *not working* on my ASUS VivoBook even with the default Ubuntu 24.04 kernel (6.11). The issue is not caused by the third-party mainline kernel — I tested kernel 6.15 via `mainline` only in case it included upstream fixes, but the problem persists across both.
*Important note*: The internal microphone *was working correctly under Ubuntu 20.04 LTS*, which used kernel 5.x (likely 5.4 or 5.15 via HWE). This suggests a regression or pin config change in kernel 6.x affecting Realtek ALC256 on this hardware. So to confirm: - Ubuntu 20.04 (kernel 5.x): internal mic working - Ubuntu 24.04 (kernel 6.11): internal mic not working - Mainline kernel 6.15: internal mic still not working - External USB mic: works fine - Internal mic is detected by ALSA and PipeWire, not muted, but captures no sound This appears to be a codec/pin mapping issue affecting ALC256 under newer kernels. Happy to provide additional logs or test patches if needed. Thanks again, Anas On Tue, Jun 3, 2025 at 7:00 PM Nick Rosbrook <[email protected]> wrote: > > - Upgraded to mainline kernel 6.15 via `mainline` tool > > To clarify: when you use the Ubuntu provided kernel, everything is okay? > But when you install a third party kernel things break? > > If so, this is not something we can support, and you will need to find > help elsewhere. If I misunderstood, please clarify the working vs. non- > working scenarios. > > ** Changed in: alsa-driver (Ubuntu) > Status: New => Incomplete > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/2112330 > > Title: > Internal microphone not working on ASUS VivoBook with Realtek ALC256 > (Ubuntu 24.04 + kernel 6.15) > > Status in alsa-driver package in Ubuntu: > Incomplete > > Bug description: > I'm using an ASUS VivoBook (11th Gen Intel i7, Realtek ALC256 audio > codec). On Ubuntu 24.04.2 LTS, the internal microphone is detected and > listed correctly in PulseAudio/PipeWire and ALSA, but no input is > captured. Microphone volume and boost are set to 100%, not muted. > Input device appears as RUNNING in pactl, but no signal is recorded. > > I tested: > - Ubuntu 24.04 with default kernel (6.11) > - Upgraded to mainline kernel 6.15 via `mainline` tool > - ALSA, PipeWire, PulseAudio all installed and working > - External USB mic works perfectly > - BIOS does not expose any audio/microphone control > - Mic also tested with `pw-record`, `arecord`, `gnome-sound-recorder` — > all silent > > ALSA info: > https://alsa-project.org/db/?f=6d6466ba903b2e08b351046571e0fc54ddd13981 > > It seems like a pin configuration or unsupported codec issue with > ALC256. Please advise if this requires a patch or model-specific > quirk. > > Thank you. > > To manage notifications about this bug go to: > > https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/2112330/+subscriptions > > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2112330 Title: Internal microphone not working on ASUS VivoBook with Realtek ALC256 (Ubuntu 24.04 + kernel 6.15) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/2112330/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
