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Yesterday I installed Ubuntu 14. 04 on my notebook and had many troubles with it.

  1. Installed Ubuntu 14. 04 configured everything how I like it (minimal changes) and then enabled in additional drivers new Graphic drivers ("Nvidia binary driver -version 331. 38" (propretiary, tested)). The result was that Ubuntu has been damaged and I could not boot etc. No solution of solving this problem I found on the forums worked for me.
  2. I used my previous Clonezilla Image and reinstalled Ubuntu 14. 04. With the opensource drivers everything ok (but it does not run as smooth as it does with the Nvidia drivers).

My notebook was running while I was not near it. When I came back my Notebook was in sleep mode. After I pressed the Power Button it tells me that I am offline (Wi-Fi). When I try to reconnect it shows really all Wi-Fi Routers near me, but not my personal Wi-Fi Router Access. Under "more networks" I can't find it too. When I go to Dash and search for Network there is a huge list of available Networks, but not my own. When I switch to an other OS with the same Notebook I can find my Wi-Fi SSID. And I am sure that it will work again when I reinstall Ubuntu again. But this would be the third time and I don't want to reconfigure all again.

So is there a solution for this problem?

Hardware: Acer Aspire 5742G Intel i5-450M Nvidia Geforce GT540M Wi-Fi: Atheros AR5B97

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closed as off-topic by Braiam, Eric Carvalho, Luis Alvarado Jul 25 at 1:16

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Bug reports and problems specific to development version of Ubuntu should be reported on Launchpad so that developers can see, track and fix these issues." – Braiam, Eric Carvalho, Luis Alvarado
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Are you sure that your SSID is visible for other devices? –  Braiam Jun 9 at 15:44
1  
Hello, yes its visible. On my router configuration I turned it visible. All my other devices (Android, IOS) can see my SSID and connect to it. When I boot to Win7 with my Notebook and search for it I can see it and connect too. Yesterday my Ubuntu 14.04 was connected to my routers SSID. But after it went to Hibernation the SSID disappeared. Since then im offline and my router is not listed in the network manager of Ubuntu. –  b-12-3838 Jun 9 at 15:46
    
I turned the Router On and Off and now it works again. But I remember that this same problem appeared on Linux Mint. Maybe it has something to do with the drivers, I dont know. --Solved –  b-12-3838 Jun 9 at 17:02
    
I would report a bug. –  Braiam Jun 9 at 17:03
    
Your own SSID will appear after a while, I have the same issues on 12.04 and 14.04 (two Lenovo's) it seems that somehow Ubuntu thinks it's connected to that SSID and it's in some inconsistent state, after I while I have a "Disconnected from that SSID" notification and a couple of seconds later it's available to connect. Did you fill a bug about this to Ubuntu ? –  Radu Maris Jun 17 at 22:28

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