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Dear Simon, Thank you for your prompt response! > I'm assuming this isn't just an internet drop, although if you've > overlooked that then the following may be a waste of time. We do sometimes have internet drops in this part of the world, but this problem isn't related to those. > Find out the IP of your router (assuming it's the first routing layer > between your PC and the world). > > Now we know that, set up a test. The simplest way is to ping it. The IP address of the router (and indeed, there are no other routers or switches beyond it) is 192.168.1.254. > Every second, your computer will ping that and give results like; > > 64 bytes from 10.1.0.200: icmp_seq=1 ttl=255 time=0.280 ms Make that "time=5.5ms" and the above is indeed what I get right now! > Connection's good. > > Now leave that running in a terminal until you experience one of your > dropouts. Switch back to that terminal and see if you're able to reach > that router. OK, this is something I'll need to wait for. On the other hand, I do recollect doing this before - I wrote on IRC at that time that "all ping requests time out" when the problem starts. > If it's still pinging, then your computer and that first leg of > networking is fine[1]. (Whether it's ethernet or wifi). > > If it's not then, if you have another computer, try the same from them > - maybe the router is overheating and rebooting. If your phone is on > the wifi network, can that reach the internet? Ie - do everything you > can think of to establish whether the issue is with your computer, or > that router. (Including checking the router's uptime) There are three other computers in this household, sometimes being used concurrently; none of the other PCs have had this problem and they all continue to work normally when this one stops connecting. > [1] I've simplified this. Experienced folk will know that sometimes a > machine can ping but be unresponsive in other ways, or there are weird > layer x problems that affect larger packet sizes, or random > interference from EMF/Radio/Sunspots can mess with networking... But > staying off the edge cases for brevity. I fear this may be an edge case... :/ Best wishes, Sebastian -- - Freenode: 'seabass' - Matrix: '@seabass:chat.weho.st' -- The Mailing List for the Devon & Cornwall LUG https://mailman.dcglug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq