As per comment #15, I can confirm that setting [nouveau.noaccel=1 on kernel command line] does prevent lockups (at least for 3 days). It does result in a occasional strange display artefacts (eg black boxes left after tool tips close), but is entirely usable and causes less issues than using the proprietary driver.
As per comment #15, I can confirm that setting [nouveau.noaccel=1 on kernel command line] does prevent lockups (at least for 3 days). It does result in a occasional strange display artefacts (eg black boxes left after tool tips close), but is entirely usable and causes less issues than using the proprietary driver.