Something kinda weird happened to me today.
I've been using Ubuntu for month on my computer without any issue but today I decided to install Windows 7 on dual boot so that my GF can use Photoshop... Of course I had issue installing windows so I had to hard reboot it.
After doing this, Ubuntu could not activate my network card and failed to connect to my network(rebooting didn't do anything). I had to go back to windows and restart it "safely" in order to fix it.
Now my computer connects back to my network but internet is really slow. DNS resolution takes a long time. Speedtest.net shows a unstable link.
ifconfig shows dropped RX packets.
pate@pepette-i7:~$ ifconfig eth0 eth0 Link encap:Ethernet HWaddr 50:e5:49:3a:64:b1 inet addr:192.168.1.11 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::52e5:49ff:fe3a:64b1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2261 errors:0 dropped:2261 overruns:0 frame:2261 TX packets:17701 errors:0 dropped:23 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2204486 (2.2 MB) TX bytes:1122744 (1.1 MB) Interrupt:42 Base address:0xe000
Using a netbook on the same networks works fine so it's not the router. And going back to windows works fine too so It's hardware related.
I tried to switch to google's DNS, /etc/init.d/networking restart, ifconfig eth0 down, ifconfig eth0 up.
After some testing, local network is intermittent too. If I connect from my laptop to the computer it works but then freeze and I can't type anything in the ssh client.
Don't know what to do now :(
Thanks for reading.