Author Topic: Travelmate B115 Wireless  (Read 1273 times)

dhicks

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Travelmate B115 Wireless
« on: May 20, 2015, 08:15:59 PM »
Group.......

We are working with Travelmate B115 units that have the Intel 7260 AC wifi.  We have an Aruba wireless system (N).  We are seeing frequent failure to connect to the wireless.  Turning wifi off/on sometimes resolves as does restarting the machine at times.  There is plenty of wireless coverage in the area and we've also seen the same behavior using other WAPs for testing.

Has anyone run across this sort of behavior and found a solution?

Thanks for all.

jnetman1

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Re: Travelmate B115 Wireless
« Reply #1 on: July 03, 2015, 01:06:52 PM »
Panama-Buena Vista is also on Aruba and has experienced weird issues, although I think they were able to get them worked out. The 7260 seems to prefer 5GHz, so definitely make sure you are connecting to a capable 5GHz SSID.

You can also try a newer driver from an upstream kernel through the backports project. To do this, first go to the backport page here: https://backports.wiki.kernel.org/index.php/Main_Page then click on the link under "Download" for the current release. Once on that page, download the latest one at the top (I used
backports-4.1.1-1 for this test run) and extract the downloaded file to your Home (user) folder, then follow these steps:

  • Open a terminal (ctrl-alt-t)
  • cd backports-[tab] (should autocomplete to the version you downloaded - if not, start typing the version and press tab to complete, or type out the full version)
  • make defconfig-iwlwifi
  • make
  • make install
  • reboot

After this is done, test to see if things are better.

jnetman1

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Re: Travelmate B115 Wireless
« Reply #2 on: July 03, 2015, 01:32:16 PM »
You can also try newer firmware, which you can download from http://git.kernel.org/cgit/linux/kernel/git/iwlwifi/linux-firmware.git/tree/ . For the B115, the firmware is iwlwifi-7260-[version].ucode. ubermix 2.23 already has versions through 12 in it, so you will only want to download newer. Click on the newer file in the list, which will bring up a binary editor, then click the "plain" link at the top to download. Once downloaded, copy into the /lib/firmware folder to install, and reboot.

Note that you will want to download all of the newer versions, since you won't know for sure if the backport driver will use the latest one. The 4.1 driver I built per instructions above only went as high as the "13" version, even though there was a 14 available.

amcmahan

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Re: Travelmate B115 Wireless
« Reply #3 on: July 10, 2015, 12:35:24 PM »
Panama-Buena Vista is also on Aruba and has experienced weird issues, although I think they were able to get them worked out. The 7260 seems to prefer 5GHz, so definitely make sure you are connecting to a capable 5GHz SSID.

The issue was with the Ubuntu driver jumping between radios. For awhile we shut off the 2.4 radio all together which also worked but was not desirable. We were able to force all capable devices to use the 5Ghz radio.

This link helped us: https://arubanetworkskb.secure.force.com/pkb/articles/HowTo/R-1447

Hope it helps.

jnetman1

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Re: Travelmate B115 Wireless
« Reply #4 on: July 11, 2015, 09:37:42 PM »
Awesome, thanks for the tip! Will be sure to forward to others in need.