I'm staying somewhere for a while where there are two wifi networks. One's mediocre, one sucks. The mediocre one worked fine on my HP machine with a Realtek card running Mint for several days. Suddenly DNS stopped working. The connection "strength" is still good.
ping http://google.com fails instantly, Chrome fails with
The poorer network still works okay. Additionally, on that same previously okay network, I get the same problem with DNS when I boot over to an installation of Ubuntu. I'm currently on a Macbook using it now, so the problem seems specific to the machine (the Macbook working seems to rule out it being the network, and it not working on the Ubuntu side and the Mint side suggests it's a firmware issue?).
I blindly followed these steps, from this forum post: http://ubuntuforums.org/showthread.php?t=2219952
, but it didn't change anything:
sudo apt-get install --reinstall linux-headers-generic linux-headers-$(uname -r) build-essential dkms git git clone https://github.com/FreedomBen/rtl8188ce-linux-driver cd rtl8188ce-linux-driver make sudo make install sudo cp -r firmware/* /lib/firmware echo "options rtl8188ee ips=0 fwlps=0" | sudo tee /etc/modprobe.d/rtl8188ee.conf
So, why might DNS suddenly stop working for a particular wireless network on a particular machine?