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Dear Pete, > As it happens on wifi and wired connections, it doesn't sound like > hardware either at the PC or router. That would make sense, as on the occasions I have used a live OS image on this PC I haven't experienced any problems. > Could there be another device grabbing the PC's IP address? I assume > when you are connected by wifi you have a different IP to wired? Now that's something... Is there a way to find out if another PC is taking the IP address from this computer? Other family members might not appreciate me rushing down and typing apparently random commands into their PCs! I do usually have four IP address - an IPv4 and an IPv6 address for both ethernet and wireless. This time, however, I had booted up without the wireless adapter plugged in (to free up a USB port), and now after plugging it in and running nmcli device connect wlp0s29f7u2 I get "Error: Failed to add/activate new connection: A 'wireless' setting is required if no AP path was given." This hasn't happened before! :( I've attached the output of various commands just in case they are helpful. > Does the interface still report as up? When the problem occurs, it does usually remain 'up', but sometimes it reports as not connected. > All I can suggest is running tcpdump on the interface to see if it > is seeing any traffic after you have the problem. I'm currently running ping to both the router and the internet in tmux, and tcpdump -i enp2s0 -vv redirected to a file. Sod's Law: it'll all work just fine today... > I would also try and do the debugging on the wired connection as > much as possible (might just be because I am old and still don't > totally trust wifi :)) I don't think I'm in a position to trust any networking at the current moment :) > Cheers, > > Pete Thanks for your help :) Best wishes, Sebastian PS. Newsflash from five minutes since this email was written: the wireless connection just became connected all by itself, hence it's appearance in the nmcli and ifconfig output! -- - Freenode: 'seabass' - Matrix: '@seabass:chat.weho.st'
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