I built and tested a local kernel module patch for this issue, and it fixes the built-in speakers on this machine.
Tested hardware: - Lenovo Legion 7 16IAX7 - Realtek ALC287 codec SSID: 17aa:3874 - CS35L41 amp ACPI HID: CSC3551 - Kernel tested: Ubuntu 7.0.0-22-generic Patch summary: - Add `SND_PCI_QUIRK(0x17aa, 0x3874, "Legion 7i 16IAX7", ALC287_FIXUP_CS35L41_I2C_2)` in `sound/hda/codecs/realtek/alc269.c` - Add `17AA3874` to the CS35L41 config table in `sound/hda/codecs/side-codecs/cs35l41_hda_property.c` - Add `CSC3551` + `17AA3874` to the CS35L41 property model table, using `generic_dsd_config` - The `17AA3874` CS35L41 config mirrors the already-supported nearby `17AA386F` Legion 7i configuration Validation result: - Patched modules loaded successfully under Secure Boot after MOK enrollment - `dmesg` now shows `Adding DSD properties for 17AA3874` - Both `i2c-CSC3551:00-cs35l41-hda.0` and `.1` probe successfully - CS35L41 firmware loads for both amps - Calibration is applied for both amps - Both amps bind to `snd_hda_codec_alc269` - Built-in speaker playback works - The previous failure signatures are gone: - `Failed property cirrus,dev-index` - `Platform not supported` - `probe with driver cs35l41-hda failed` Patch file from my local test workspace: `/home/kamlesh/Repos/kernel-audio-fix/upstream-submission/0001-ALSA-hda-Add-Lenovo-Legion-7i-16IAX7-17AA3874-quirk.patch` I am preparing/submitting this upstream to the ALSA/kernel maintainers as: `[PATCH] ALSA: hda: Add Lenovo Legion 7i 16IAX7 17AA3874 quirk` -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2157060 Title: Lenovo Legion 7 16IAX7 17AA3874: CS35L41 amps fail with missing cirrus,dev-index To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2157060/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
