Arctis Nova Pro Wireless: Battery read fails with 'Could not open device. Error: Success'

[Stonelukas]

Description

Battery reading fails for SteelSeries Arctis Nova Pro Wireless despite device being detected and having correct permissions.

Environment

• OS: Arch Linux (kernel 6.x)
• HeadsetControl version: Latest from AUR
• Device: SteelSeries Arctis Nova Pro Wireless (0x1038:0x12e5)

Steps to Reproduce

headsetcontrol -b -o json

Expected Behavior

Battery level should be returned.

Actual Behavior

{
  "device_count": 1,
  "devices": [
    {
      "status": "success",
      "device": "SteelSeries Arctis Nova Pro Wireless",
      "id_vendor": "0x1038",
      "id_product": "0x12e5",
      "capabilities": ["CAP_BATTERY_STATUS", ...],
      "errors": {
        "battery": "Could not open device. Error: Success"
      }
    }
  ]
}

Additional Information

• Device is correctly detected at /dev/hidraw8
• Permissions are correct: crw-rw-rw-+ 1 root root 243, 8
• udev rules are installed (/usr/lib/udev/rules.d/70-headsets.rules)
• User is in input group
• Same error occurs even with arctis-manager service stopped
• Other capabilities (sidetone, lights, equalizer) report as available but battery specifically fails

The Arctis Nova Pro Wireless uses a GameDAC/base station - perhaps the battery info is on a different HID interface or requires a different query method?