wifi continually tries to authenticate but fails on Ubuntu 14.04 LTS with network manager

[Jasdeep Khalsa]

When I attempt to use wifi it keeps saying its authenticating and then does not connect. I can see all the 2G wifi networks. Network manager will keep trying for up to an hour and then suddenly it will connect like magic! Also, I have installed both WICD Network Manager and Ubuntu's Network Manager on my system, but I am only using Ubuntu's Network Manager.

I've tried:
* Using software updater to update my system fully
* Restarting my laptop
* Restarting the router
* Connecting to the wifi with my phone (works fine!) whilst I am struggling to connect with my laptop
* Disabling network manager and re-enabling it
* Disabling wifi then re-enabling it
* Disabling wifi and networking and then re-enabling it
* In Terminal: sudo service network-manager restart

[Jasdeep Khalsa (jasdeepharibhajan)]

This bug sounds similar to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173759

[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[Jasdeep Khalsa (jasdeepharibhajan)]

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[penalvch (penalvch)]

Jasdeep Khalsa, as per http://support.lenovo.com/us/en/products/laptops-and-netbooks/lenovo-y-series-laptops/y50-70-notebook-lenovo an update to your computer's buggy and outdated BIOS is available (2.01). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?

If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report.

Once the BIOS is updated, and the information above is provided, then please mark this report Status Confirmed.

Thank you for your understanding.

[Jasdeep Khalsa (jasdeepharibhajan)]

In the end I solved this problem by switching to Wicd Network Manager (https://help.ubuntu.com/community/WICD) and the problem has not emerged again.

Note: The default Network Manager is still installed on my system, but I have disabled Networking on it and no longer use it. WICD works better across wifi and wired networks I have found - generally speaking.