Please try running nmtui in a mate-terminal session and check out what you find.
On Tue, 23 Jul 2019, [email protected] wrote: > Date: Tue, 23 Jul 2019 14:28:46 > From: [email protected] > To: Debian Accessibility <[email protected]> > Subject: Debian Buster and wifi > Resent-Date: Tue, 23 Jul 2019 18:29:04 +0000 (UTC) > Resent-From: [email protected] > > I installed Debian `10 Buster 32 bit to an older desktop which has no > wifi card so I use a USB wifi adapter from ThinkPenguin.com. The > specifications state it is compatible with Debian 6, 7, 8, 9 and 10 and > many other distros. It installed flawlessly using the netinstall iso > and that USB wifi adapter. > > But after installation, I cannot connect to the internet through the > Mate desktop wifi options. Unfortunately, I do not know what a lot of > those options should be set to. > > I was able one time only to connect within the console using Ip Link, > Wpa_supplicant and dhclient commands which I have always used with > earlier versions of Debian. The second time I tried it failed on the > dhclient command. I imagine network-manager is interfering. Not sure > why I was able to connect the first time. > > Is it possible to totally remove network-manager and any other wifi > applications so that I can connect manually rather than automatically? > > > --
