https://www.reddit.com/r/linux/comments/hl09g7/onyx_boox_chi...
https://news.ycombinator.com/item?id=23735962
https://www.mobileread.com/forums/showthread.php?t=277431
https://old.reddit.com/r/Onyx_Boox/comments/hsn7kx/onyx_usin...