I have the weirdest problem with my laptop, and I have no idea how to even debug it. So, I'm posting it here in case anyone has an idea:
I'm using Ubuntu 22.04; all updates installed.
Almost all the time, I'm connected to my home wireless network (router + APs).
Last week, the connection to the wireless was working fine. I went on vacation for one week; I took the laptop with me so it was not connected to my home network. Today I tried to connect to my WiFi, but it is not working.
The laptop can connect to the wireless network,
and it gets the IP, DNS and routes assigned via DHCP. But pinging to the router does not get any response.
I tried the wired connection (same router), and it works.
I tried the WiFi hotspot from my phone, and it works.
All other devices connected to the wireless network work.
There are no firewall rules in the AP or router blocking my laptop (again, it connects to the wireless network and DHCP works).
iptables is clean.
If it is a problem between the laptop and the AP, how can it get all the DHCP info?
If the problem is between the AP and the router, how do the other devices work fine?
If the problem is the wireless driver in Ubuntu, how does connection to the hotspot in the phone work?
I removed and recreated the WiFi configuration to my home network; it does not fix it. I also tested using a static IP.
I have no idea what this could be.
Any ideas?
Reposts appreciated. :-)
@AndresPlazaR Hi, that is a weird one! Presume you have tried the community at askubuntu.com?
@friendslive Not yet; will try that next. Thanks!
@AndresPlazaR Did you try forcing the DHCP client to renew the IP Address of your laptop? Also consider flushing your laptop's routing cache.
@danielscher Thanks!
Well, I rebooted, disconnected and disabled/enabled DHCP several times, so I imagine that would do it?
I checked the routing table while doing the steps above, and it always cleared. ☹️
@AndresPlazaR 🤔 I am running out of suggestions. I would use the command line interface to force the renewal of the DHCP address (syntax may vary depending on your dhcp client), flush the routing table, tracepath to your
router, and check your /var/log/syslog file for unwanted events that happened during this time.
@danielscher Thanks again!
Rebooting the APs fixed the issue. I should have done it yesterday, but the fact that other devices were working obfuscated my judgement. 🙂
@AndresPlazaR Glad to see that it ended well. 🙂
I had a problem for a while on an Ubuntu laptop, whereas at certain locations I would connect to WiFi, load one page and then I would entirely loose connection. No one else had any problem connecting at these locations.
At these locations, I could connect my laptop to Internet via hotspot on my phone without trouble.
At home and many other locations, I had no problems. This went on for months.
Finally, I got a new computer. No problems.
Never figured out why.
Had a similar problem with my PC (which runs Windows, here's a catch) yesterday.
However, if you are using a Fritzbox, they have run a huge update, which *might* have killed your connection settings.
Fritzbox could *see* my PC, PC could not connect to Fritzbox.
I had to reset my connections, forcing my PC to reestablish connections on its side, while my little Linux laptop connected to my Wifi effortlessly.
Weird, but I hope this can help.
Thanks for all the suggestions!
Problem fixed after rebooting the AP... But I hate that I don't know the real reason, and I just hope it is a one-off.
(I know, I should have rebooted the APs yesterday, but because the other devices were working, I did not think that could help)