35 hours ago
I am new to Ubuntu/Linux, this is my first ever install. Have installed Ubuntu 14.04 on an old HP Probook 5310m & a HP 431. I installed it from USB stick and overwrote Windows 7.
Everything looks good EXCEPT, WiFi doesn't work on either computer. On the Probook, the hard WiFi button on the right of the keyboard is orange (meaning off). Pressing it doesn't help. The system doesn't even seem to see that the pc has a WiFi adapter. On the HP 431, the WiFi is on the F12 key, but no combination of buttons will turn it green (constantly orange).
I've tried running rfkill unblock all in the terminal, but am unsure if I did correctly (how can I tell if I'm "running as root"?). Anyway, didn't help, still no WiFi and orange button.
rfkill unblock all
Also tried the "take battery out, reboot, F10" suggestion above. Didn't help, there was no options in the BIOS setup that seemed to be related to WiFi state.
Interestingly, on the Probook, if I go to "Settings/Network" pressing the WiFi switch seems to turn on and off Airplane mode, but still no WiFi with or without airplane mode being pressed. On the 431 it at least sees there is a WiFi adapter, but under the wireless sign, "WiFi is disabled" is shown but is grey and can't be changed. When I go into settings, it won't let me turn on the WiFi...
Can anyone help? I can supply more information, but you may need to instruct this noob into how to get it.
7 hours ago
In case of your probook, you can install the b43 firmware and see if the issue is solve. A detailed description and how-to is here.
In summary, if you can use LAN connection in your probook, follow there instructions (if you are using Ubuntu 12.04 - 14.04). In the terminal type:
sudo apt-get update
sudo apt-get install firmware-b43-installer
Restart your computer.
There is also an option to install this if you can not access internet from your probook. Look at the b43 - No Internet access section of this link.
b43 - No Internet access