Since the update to 15.04, my dual-boot Dell XPS can't use my Wifi network. It can't even update itself now. Network is fine when I boot to Windows.
When I reboot to Ubuntu, I can see both of my two my Wifi networks connect, the signal looks fine (as it does in Windows) but I can't ping anything and the Firefox browser can't get to anything.
When I reboot back to Windows, everything is fine.
In writing this, I see several similar questions to the right side of the screen, so I will look at these to see if any of them address the issue here.
TIA to any who have seen this issue and know how to fix it. Worst case, I suppose I can save my data files from the Ubuntu partition and then reinstall 15.04 (or 14.10) from scratch.
Update 2015-05-29 I just ran the following command:
mike@Old:~$ lspci -knn | grep Net -A2
03:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6230 [Rainbow Peak] [8086:0091] (rev 34)
Subsystem: Intel Corporation Centrino Advanced-N 6230 AGN [8086:5221]
Kernel driver in use: iwlwifi
lcpci -knn | grep Net -A2
terminal command there.