https://openpowerfoundation.org/openpower-virtual-coffee-calls/
in 2 hours. conference call dial-in numbers at the above web page (which do not involve running non-free proprietary software to attend)
these are an open informal chat, not recorded, no "agenda". topics have been thoroughly eclectic and enjoyable.
l.
--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68