[Dell Vostro 5459] WIFI and ethernet do not work.

[Taihsiang Ho]

Hardware: Dell Vostro 5459 (CID 201508-19025)
Image: 16.04.1

[Steps to Reproduce]
1. Make a 16.04.1 live USB.
2. Use this USB stick to boot the machine to the live desktop. I could not install the system because of LP: #1626869 so I test this issue in a live environment.
3. Click the network manager to connect available wireless AP.[1]
4. Plugin ethernet cable. Check the network manager status.[2]

[Expected Result]
[1][2] WIFI and ethernet are ready to use.

[Actual Result]
[1] Network manager shows "device not ready" for wireless.
[2] Network manager seems to try to get IP but the connection could not be established, and no IP is shown by the command "ifconfig".

[Additional Information]
Both of the hardware, wireless device and ethernet port, are normal. They could enable and work with the associated pre-installed Ubuntu image supported by Canonical.

[Taihsiang Ho (tai271828)]

201508-19025.ubuntu-bug.log was report collected by ubuntu-bug.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1629252

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Taihsiang Ho (tai271828)]

The system could not access network. I have pasted the log collected by ubuntu-bug as comment#1.

[Taihsiang Ho (tai271828)]

Tested with live Ubuntu 14.04.4 (Kernel 4.2.0-27) could NOT reproduce the ethernet issue. That is, ethernet works.

WIFI does not work still on live Ubuntu 14.04.4 (Kernel 4.2.0-27).