I just tested after an issue was reported to confirm it, the mate live iso has an issue with wireless, the first user is fairly unexperienced and I'm fairly skilled as a linux community manager but uncertified for Linux [sysadmin] (tried twice on my case).
On my system, Lxde live iso work perfectly so it could be a misconfiguration of Mate, the drivers don't seem the issue. The first system was also checked by a programmer that don't found anything suspicious, the drivers is there but it don't work. root@debian:~# iwconfig wlx10bef5fd230c IEEE 802.11 ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off eno1 no wireless extensions. lo no wireless extensions. Just ask if needed for more informations. -- Michaƫl Caron Couturier