### 📌 Question Description
**Have you searched the community for related issues?**
- [x] No similar issues found.
**Please describe the problem you've encountered in detail**:
- **Description:** Internal audio is not working on my Acer Chromebook C721 after installing FydeOS. FydeOS shows no internal audio input or output devices, and the volume control is greyed out. Rebooting does not fix the issue.
I ran the built-in `diag audio_driver` diagnostic twice, including once after a clean reboot. Both times it failed with:
`audio_devices_succeed_to_open: true`
`internal_card_detected: false`
Kernel logs also show that ALSA initializes but reports:
`No soundcards found.`
The system identifies the Chromebook as Google KASUMI/Aleena and is using MrChromebox UEFI Full ROM firmware. Wi-Fi, keyboard, trackpad, battery, and Android apps are otherwise working normally.
---
### 💻 System & Device Information
- **Hardware & System Configuration**:
- **Device:** Acer Chromebook C721 (Google KASUMI/Aleena)
- **Processor:** AMD A4-9120C
- **Graphics Card:** AMD Radeon R4 Graphics (integrated; no discrete GPU)
- **RAM:** 4 GB
- **FydeOS Version:** FydeOS v23.0-SP1 (16700.56.23.31), stable-channel, amd64-fydeos_apu-io
- **Kernel Version:** Linux 6.12.54-01180-gb4e10020ba49-dirty
- **Firmware:** MrChromebox UEFI Full ROM, version 2606.1
- **Audio diagnostics:**
`diag audio_driver`:
Initialized
Running Progress: 100
Status: Failed
Output:
{
“audio_devices_succeed_to_open”: true,
“internal_card_detected”: false
}
Relevant kernel output:
Advanced Linux Sound Architecture Driver Initialized.
ALSA device list:
No soundcards found.
- **Additional information:**
- The volume slider is greyed out.
- No internal audio output or input device appears in FydeOS audio settings.
- The issue persists after a full reboot.
- FydeOS reports that the system is fully up to date.
- FydeOS Developer Mode is currently disabled.
- I have not installed third-party audio-fix scripts or manually modified audio drivers.
**Question:** Is internal audio currently supported for the KASUMI/Aleena (AMD Stoney Ridge) Chromebook platform on FydeOS v23? If additional drivers, a newer kernel, or a FydeOS-specific configuration are required, what is the recommended safe method to enable the internal speakers and microphone?