Can't use wifi

[dpeets]

Secured network: All users may connect, automatically connect when available, password is correct. Security is WPA & WPA2 Personal, which should be correct. For completeness, Mode: infrastructure, MTU: Automatic, restrict to wlan0, IPv4 and v6 both Automatic, neither is required.

Open network: Same, except security is None.

[Snowhog]

That all sounds correct. Hmm. Well, 15.04 is still "under development", and while most stuff should already have been 'shake and baked', there will be "issues" still to be resolved.

The wired connection works fine though?

[dpeets]

Wired connection is perfectly happy, and almost everything else I've tried works just fine.

[SteveRiley]

I Googled around a bit and discovered that there are numerous reports of people having problems with Intel wi-fi, 802.11n, and certain wi-fi routers and access points. One way to find out if this problem is affecting you is to disable 802.11n in your router. Does that help?

[dpeets]

Yes. Works perfectly on the one access point I control. Hopefully there's a fix soon so I can use the world's other access points.

Is there a bug report somewhere I should watch?

[SteveRiley]

I didn't look for any specific bug reports -- what I found during a cursory search was several posts to various Linux forums.

[Nayar]

It's a bug then. Regression.

[Nayar]

Disabled Wifi n on router. Can connect now. Doesn't solve the issue though.

Less than 1 month official release for 15.04. Lots of people use Wifi n

[dpeets]

So... I presume this should become a formal bug report, then.

Against linux-firmware maybe?

[dpeets]

I put it here: https://bugs.launchpad.net/ubuntu/+s...e/+bug/1436891

[Nayar]

I put it here: https://bugs.launchpad.net/ubuntu/+s...e/+bug/1436891

Nice report (y)

[Nayar]

I'm at a developers conference. I'll be a speaker there. Can't connect to wifi due to this. Gotta use windows now

[Guest]

I have a possible solution but I have to have one post before I can post links

[Guest]

I have a possible solution but I have to have one post before I can post links

Okay as I was saying, here it is:

$ sudo service network-manager stop

$ echo "options iwlwifi 11n_disable=1" | sudo tee -a /etc/modprobe.d/iwlwifi.conf

$ sudo rmmod iwlmvm iwlwifi
$ sudo modprobe iwlmvm iwlwifi

$ sudo service network-manager restart