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…ry amplifier's ACPI ID The note said every AMD laptop has its built-in microphones on the audio coprocessor. HP's business models put them on the codec's digital microphone input instead: the EliteBook 8 G1a's and 845 G9's kernel logs show the ALC245 with "Internal Mic=0x12" and no coprocessor microphone card, while the OMEN and Victus boards the kernel lists for coprocessor microphones show only the jack's. The bullet says both, without claiming a laptop that has not run Kryptik. Its way to tell a machine's kinds named only CSC3551 and TIAS2781, so a CS35L54 laptop read as having none. It now names CSC3554, CSC3556 and CSC3557 (6.18's alc269.c and serial-multi-instantiate.c) and TXNW2781, and how the codec shows its microphones: pin 0x12's default.
…multi-instantiate.c:412-413)
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docs/design/laptop-audio.md only. The base is zbook-batch-2 (#637), whose #625 rewrote parts of the same file. It retargets to main when #637 lands.
ALC245 autoconfig: inputs: Internal Mic=0x12, and no coprocessor microphone card.yc/acp6x-mach.clists for coprocessor microphones, show onlyMic=0x19.CSC3551andTIAS2781, so a CS35L54 laptop read as having none. It now namesCSC3554,CSC3556andCSC3557(v6.18.56alc269.c:3143-3145,serial-multi-instantiate.c:405-410) andTXNW2781(the same table), plus pin 0x12's default as the codec's sign of microphones.The ZBook unit itself confirms or refutes this at its first boot. If its pin 0x12 is unconnected, its microphones are on the coprocessor, and the old sentence holds for it.