Hi @khalilst, I have the same issue on my HP EliteBook 8G1i 14" (Next Gen AI PC) with Intel Lunar Lake-M and 2x CS35L54 amps on SPI.
My system: HP EliteBook 8G1i 14" (subsystem ID: 103c:8d8f) ACPI HID: CSC3554 Intel Core Ultra (Lunar Lake-M) Ubuntu 24.04 with kernel 6.17.0-23-generic PCI SPI Controller: 8086:a827 What I've confirmed: The ACPI DSDT has the same broken cs-gpios (only 1 entry for CS0) I patched serial-multi-instantiate.c to expand num_chipselect and both SPI devices get created AMP1 (CS0, native) probes successfully: Cirrus Logic CS35L54 Rev B0 OTP4 fw:3.4.4 AMP2 (CS1, GPIO) fails: Firmware boot timed out(0): HALO_STATE=0x0 (clock gating issue) The HDA codec waits for both amps to bind, so no audio output I've tried kernels up to 7.0.5 mainline and the fix hasn't landed upstream yet. Could you share your actual patch files (diffs) for serial-multi- instantiate.c and spi-pxa2xx.c? Or alternatively, your compiled kernel .deb packages? I'd really appreciate it. I've been troubleshooting this for hours and your writeup is the only documented fix. Thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2131138 Title: Internal speakers don't work in HP Elitebook 8 G1i 14 AI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/2131138/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
