What's more disturbing than a sudden, possibly-hardware-related problem? One that then disappears completely overnight. 😕 I had been using the Keybase file system to backup some data, but, over the weekend, things got horribly out of sync and my main desktop ground to a crawl; eventually I gave up, powering off the tower for most of Sunday. After abandoning `kbfs` yesterday, removing it and restarting, my Ubuntu install had this horrible static-like flicker associated with mouse movement. Now, today, that's completely disappeared. No power problems. New monitor. 😕