No Internet Connection on Startup

[N]

Sometimes, once my computer has started up and my desktop environment has loaded, I will have unsuccessful internet connection. My wireless connection to my router will still show as receiving a signal. However, I will enter a URL into my browser (Firefox), and it will be 'Connecting' for minutes, before eventually failing to load the web page.

I use a USB wireless-G adapter dongle (Linksys WUSB54GC), along with the USB extension cable it came with (D-Link).

Disconnecting and unplugging the adapter for ten seconds then replugging it and reconnecting always rectifies the problem. I'm able to successfully connect to the world wide web once again, and any web page will load up.

This will additionally happen with Steam and the Ubuntu Software Centre, so I know it is not just a Firefox problem.

Other times the internet works fine on startup.

Ubuntu 12.04.3, 32-bit
Unity Desktop Environment (vanilla)
Asus M4A78LT-M LE Motherboard
Asus BIOS Version 0803
AMD Athlon II X4 645, 3.10 GHz
7.9 GB RAM
Nvidia GeForce GT 240
Nvidia Proprietary Driver Version 319.32
NV-CONTROL Version 1.29
Linksys WUSB54GC v1 802.11g Adapter [Ralink RT73]
Hewlett Packard USB Keyboard
Hewlett Packard PS/2 Mouse

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1256269/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[John Kim (kotux)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect BUGNUMBER
When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Mathieu Trudel-Lapierre (cyphermox)]

Nothing indicates this is a problem in network-manager. Since it's about an unstable network connection, I'm reassigning this to linux.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.14 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-trusty/

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]