I recently installed Debian on my laptop (after playing around with dozens of distros in VMs for a year or so), and while most everything has gone quite swimmingly I'm having some issues with my wifi.
Let me preface this question by saying that (as was expected) the wifi flat-out didn't work at all upon installation. I install the proper wifi drivers (which took WAY too long to find!) to get it up in the first place, but I'm only a half-step above no wifi at all now.
The problem is that after some time of use, the wifi will simply stop working. It'll still show as connected, it'll still show me as having full bars, but nothing actually related to the network will work - chrome gives me a "DNS_PROBE_FINISHED_NO_INTERNET" error, ping gives me the typical "unknown host" error, and nothing else works.
Turning wifi off and on again fixes it temporarily - in a few minutes it breaks again. Although, flipping the physical wifi on/off switch on the computer doesn't fix it even temporarily.
There's never any issue using a wired connection, but that kind of defeats the purpose of having a laptop, no?