Allen&Heath sound controllers on Ubuntu had a funny failure too. It’s touchscreen and extra screen would show nothing on boot although the sound controls (for one surface config) works. In order to fix that, you need a replacement battery, a keyboard to boot into it’s BIOS and a password they don’t disclose publicly. I revived a couple of these by a pure luck of discovering someone posting said passwords 5+ years ago. It’s so hostile I hate it.
Allen&Heath sound controllers on Ubuntu had a funny failure too. It’s touchscreen and extra screen would show nothing on boot although the sound controls (for one surface config) works. In order to fix that, you need a replacement battery, a keyboard to boot into it’s BIOS and a password they don’t disclose publicly. I revived a couple of these by a pure luck of discovering someone posting said passwords 5+ years ago. It’s so hostile I hate it.