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Lost host wireless networking after upgrading to Ubuntu 16.04

Posted: 6. May 2016, 20:17
by answerB
Hi Guys, I'm a fresher so don't byte plz.

I tried to install a driver for my linksys wireless (Linksys WUSB6300 802.11a/b/g/n/ac) usb adapter on Ubuntu 15.04 some time ago but to no avail so I continued using my Belkin USB wireless adapter that worked albeit slow.

Since Ubuntu 16.04 was release I thought I would checkout whether or not new drivers would now be compatible, so I carried out a fresh install and tested the Linksys adapter, to my surprise it worked. With this understanding I decided to upgrade my main system that comprised Virtualbox 5.0.20 r106931. After the install I was not able to get the Linksys adapter to work, though it was clearly identifiable in lsusb listing from the command line.

Ok, I removed Virtualbox using synaptic and rebooted, then the linksys adapter worked just fine. I downloaded a fresh copy of Vbox and associated files from here and installed again. No, it knocked out the networking again.

Does anyone know why Virtualbox would want to do this to Linksys ?

I have attached 2 files in a zip, [ Virtualbox log ] and [ lsusb ] listing.

Cheers
answerB

Re: Lost host wireless networking after upgrading to Ubuntu 16.04

Posted: 6. May 2016, 20:33
by Perryg
Post the guests log file ( as an attachment ). Right click on the guest in the Main Manager then click show log. Save and post as an attachment. Compress if it is too large to post.

Re: Lost host wireless networking after upgrading to Ubuntu 16.04

Posted: 6. May 2016, 22:55
by answerB
Thank you, please find guest logs 1 and 2,

1. is the latest log when I installed the latest extension pack today after upgrade to 16.04

2. includes the extension pack from last year up to today which was running on 15.04 host.

answerB

Re: Lost host wireless networking after upgrading to Ubuntu 16.04

Posted: 6. May 2016, 23:10
by Perryg
I don't see any problem with the log file. I would assume the issue is probably on the host side since it does work with the different driver. Make sure you have the latest linux-firmware.

Re: Lost host wireless networking after upgrading to Ubuntu 16.04

Posted: 9. May 2016, 14:37
by answerB
Thank you Perryg, for your recommendations and support so far.

I have updated to the latest firmware to no avail. I played with every combination I could think of in the time, changing "integrated options" in the bios, using usb 2.0 instead of 3.0 using lesser versions of Virtualbox from website and distro channel, however, one thing remains consistant is when I de-install Virtualbox I can use the Linksys adapter as normal. When Virtualbox is installed networking for linksys goes.

This is not a bad reflection on Virtualbox builds, as I have been using Virtualbox since the days of free-running or something like that 2007 circa, and further more it represents in my mind one of the best pieces of software since MSDos.

That said, It would be nice to have functionality with the linksys adapter as it is much faster than the one I am currently using.

Last note:
I tried virtualbox on the fresh build amd64 (same system, different boot), it worked co-operatively with networking on usb 2.0 port, but would not use the usb 3.0. I may have to move all my applications to this new build as USB 2.0 with Linksys should be better than 54g.

I conclude anyway that it's just a matter of time as usual, before new drivers and firmware will correct this. (I'm in no hurray)