No internet under Ubuntu 22.04 after booting into Windows 10

[Bret Busby]

On 18/12/2022 23:09, sciguy wrote:
> First of all, a big thanks to everyone for responding. I got a lot more 
> questions than I expected, and I will do my best to answer them here.
> 
> To explain, the router and NIC work perfectly under Windows 10, so I 
> feel any talk about a firmware upgrade seems like a red herring, unless 
> there is something Linux-specific that I am missing. The Linksys EA7300 
> router is working, which is how I can read email from the list and 
> respond to them like I'm doing now in Windows, on the same machine with 
> the dodgy Linux network configuration. But I did go through the trouble 
> of checking, and yes, the router firmware is the most current.
> 
> I am learning that the dual IP address issue is itself a red herring, 
> since the router is indeed using DHCP, and these assignments are likely 
> the result of reboots which trigger DHCP reassigning a new IP. Thanks to 
> Bret Busby for that.
> 
> I was able to see the router because I was in windows 10. That's where I 
> noticed over my web browser, that the router had 2 different IPs for 
> this same machine, depending on whether it was a W10 hostname or a Linux 
> hostname.
> 
> The network card, according to my Windows software, is described as an: 
> "Intel Ethernet Connection I217-V", so it's not a Broadcom. It is part 
> of the motherboard, which is a Asus Maximus Hero VI.
> 
> The "Network" icon, and "Settings" were the first things I checked. 
> There was not much there, and I didn't see an IP. The output of the IP 
> commands sent to you earlier, as well as dhclient, all recognised the 
> NIC and labelled as "eno1", also showed no IP. The IP is on the router 
> from an earlier time when Linux was online.
> 
> I can say to be fair Linux sees the network very seldom, but it does see 
> it from time to time, even as recently as two days ago before I had a 
> reason to boot into Windows. I am perplexed as to what makes Linux 
> "decide" when to connect and when not to. Most of the time, it doesn't.
> 
> Since the network installation in Linux was dodgy, I deleted the 
> configuration that came under the Network icon to see if it 
> auto-detected anything. After rebooting, nothing came, but I wondered 
> why it wouldn't auto-detect the network card and the network itself (it 
> does if I boot with a live Linux DVD, for instance).
> 
> Paul King
> 
> 


With all of that, I suggest that you use USB tethering, connect  to a 
cellphone, and use that to connect your Linux installation to the World 
Wide Web, then, go to the Control Center -> Driver manager, and see 
whether that will detect and download and install drivers for your 
network interface.

It may work.

..
Bret Busby
Armadale
West Australia
(UTC+0800)
..............