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Re: [LUG] Continual network problems on Fedora 31

 

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

--
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