[HELP] ASUS ROG Strix G16 (2025) — No speaker audio, TAS2781 firmware not loading (SSID 1043:3f20) System Info Device ASUS ROG Strix G16 (2025) OS CachyOS Kernel 7.0.2-2-cachyos Audio engine Intel 800 Series ACE (Audio Context Engine) Codec Realtek ALC285 Amplifier Texas Instruments TAS2781 (TXNW2781) PCI SSID 1043:3f20 Audio server PipeWire 1.6.4 + WirePlumber Problem Audio works on the Live ISO but no sound from internal speakers or headphone jack after installation . PipeWire detects the device correctly, volume is not muted, but no audio output. This seems related to Issue #752 (ASUS ROG Strix G615LR, same SSID), but that issue was closed without a confirmed fix. What I’ve Tried 1. Confirmed the sink exists but stays SUSPENDED pactl list sinks short → alsa_output.pci-0000_80_1f.3.analog-stereo PipeWire s32le 2ch 48000Hz SUSPENDED 2. No UCM profile for Intel ACE / ASUS ROG find /usr/share/alsa/ucm2/ -name "*ACE*" -o -name "*ROG*" → (no results) Installed alsa-ucm-conf-git — still no matching profile for SSID 1043:3f20 . 3. Root cause found — TAS2781 I2C registration failing dmesg: i2c i2c-0: Failed to register i2c client tas2781-hda at 0x39 (-16) Serial bus multi instantiate TXNW2781:00: error -EBUSY: Error creating i2c-client The snd_hda_scodec_tas2781_spi driver was locking I2C address 0x39 , preventing the I2C driver from binding. Fix: Blacklisted the SPI driver: # /etc/modprobe.d/tas2781-fix.conf blacklist snd_hda_scodec_tas2781_spi blacklist snd_soc_tas2781_i2c After reboot, the amplifier now instantiates correctly: TXNW2781:00: Instantiated 3 I2C devices. ✅ /sys/bus/i2c/devices/i2c-TXNW2781:00-tas2781-hda.0 ✅ /sys/bus/i2c/devices/i2c-TXNW2781:00-tas2781-hda.1 ✅ /sys/bus/i2c/devices/i2c-TXNW2781:00-tas2781-hda.2 ✅ 4. Still no audio — firmware not loading Even with the I2C fix, the driver logs: tas2781-hda i2c-TXNW2781:00-tas2781-hda.0: tasdevice_prmg_load: Firmware is NULL I extracted the driver binary to check the firmware naming pattern: zstd -d snd-hda-scodec-tas2781-i2c.ko.zst -o /tmp/tas2781-hda.ko strings /tmp/tas2781-hda.ko | grep -iE '\.bin|TAS2XXX' → TAS2XXX%04X%d.bin (e.g. TAS2XXX3F200.bin, TAS2XXX3F201.bin ...) → TAS2XXX%04X.bin (e.g. TAS2XXX3F20.bin) From snd-soc-tas2781-comlib-i2c.ko.zst : → %s-%sRCA%d.bin → %sRCA%d.bin (e.g. TXNW2781RCA0.bin) Firmware files exist at /lib/firmware/ti/audio/tas2781/ : TXNW2781RCA0.bin.zst TXNW2781RCA1.bin.zst → TXNW2781RCA0.bin.zst (symlink) I tried copying/decompressing these to various paths ( /lib/firmware/ , /lib/firmware/TAS2XXX3F20*.bin , etc.) but the error persists. 5. Suspicious DSDT mismatch strings /sys/firmware/acpi/tables/DSDT | grep TXNW → TXNW3643 The DSDT references TXNW3643 but the driver bound is TXNW2781 . Not sure if this is relevant. 6. ALC285 pin status (via hda-verb) Node 0x17 Speaker: Amp-Out vals [0x00 0x00] ← muted by default Node 0x21 Headphone: Amp-Out vals [0x80 0x80] ← muted by default Manually unmuting via hda-verb doesn’t produce audio — the amplifier is the bottleneck. Current State TAS2781 I2C devices bind successfully runtime_status is active when forced on Firmware loads as NULL — amplifier never initializes No UCM profile for this hardware Speaker and headphone output silent Questions Is there a known working kernel patch or quirk for SSID 1043:3f20 + TAS2781 that I’m missing? Which firmware file path does snd-hda-scodec-tas2781-i2c actually look for at runtime? The naming pattern in the binary suggests TAS2XXX3F20*.bin or TXNW2781RCA*.bin but neither seems to be found. Is the TXNW3643 vs TXNW2781 DSDT mismatch significant? Would switching to the linux-cachyos-lts kernel (6.18.x) make a difference, or is this purely a firmware/UCM issue? Any help appreciated. Happy to provide more dmesg output or run additional diagnostics. References CachyOS Issue #752 (same SSID): ASUS ROG Strix G615LR (SSID 1043:3f20): No speaker audio, missing TAS2781 SSID quirk entry in alc269 fixup table · Issue #752 · CachyOS/linux-cachyos · GitHub