Whether couched as head-bumping or futzing, it seems as though I’m facing a probable driver issue. Sound isn’t working, although Mint seems to think it is. Even the “test sound “ does nothing. There are no physical switches on this laptop relating to sound/volume, which is why I’m thinking about futzing and head-bumping. I’ll first check bios, though, because it’s always possible it’s disabled there. At least I know I can download the driver over WiFi.