Input and audio issues. LMDE 6 with kernel 6.6.58-chrultrabook on a LARS machine

Hi folks,

I’m working on setting up an old c771T with linux for my nieces as an educational and art-making machine, and I’ve got a handful of issues that I haven’t figured out yet and I was hoping someone here could provide some insights.

Input device issues

  • My touchscreen worked on a fresh installation, but it would stop accepting inputs some time into a session, though it would work after rebooting. Recently, though, the touch screen seems to have stopped working entirely.
  • keyd v2.5.0 (installed by WeirdTreeThing’s cros-keyboard-mapscript) ends intermittently with a “Floating point exception.” I’ve been restarting the process manually from a terminal window when I want to mess with the built-in multimedia keys, but that’s not a permanent solution
  • The debugging script couldn’t find libinput

Audio issues

  • There’s a popping sound when playback is initiated over a wired headset. It’s most noticeable when I used function keys to raise/lower the volume. Popping ranges from innocuous to very loud.
  • The internal microphone doesn’t seem to be working. Input works fine from both wired and bluetooth headsets.

Here’s my output from the chrultrabook debug script: debug-logs-Lars-2025-01-19_17h12m.tar.gz - Google Drive
(I saw the warning to “Remember to remove WiFi information from dmesg to protect your privacy,” but I didn’t see any SSIDs or addresses or the like in that log; hopefully I’m not ignorant of something important!)

Thank you!