Since a few days, my room's Wifi doesn't work on my laptop (Ubuntu 20.04). Other Wifi networks show no problems. If I use ping and traceroute with a domain name, they fail with the error "temporary failure in name resolution". If I use them with an IP address, they succeed. Hence, it's probably a DNS issue. My phone shows no problems with the room's Wifi, only the laptop. Recently, I didn't do any system update or network setting changes.
What I have tried without success:
- I already tried different Wifi networks (phone, office), and they all work.
- A wired connection to the same router shows the same problem.
- I tried inserting a fixed DNS in Wifi settings (Settings > Wifi > ⚙ > IPv4 > DNS, set to 8.8.8.8 and deactivate "automatic"), still no name resolution.
- I disconnected and re-connected several times, the problem persists.
- I deleted the Wifi and re-connected to no avail.
- Run
dhclientin the console.
The problem only occurs in the combination laptop + room Wifi. I can work around this problem by using a VPN to which I connect via its IP address. It's a workaround at best.
I would like to restart the router to see whether that helps, but unfortunately, it's not under my control. So, I first want to try to determine whether the problem is on my side or on the router side.
What else could I try? Is it even my laptop's problem or probably the router? The fact that other devices are normal lets me believe that it's maybe my laptop's problem.
0 Reset to default
