Problems with Wireless since upgrade to 14.04

Bug #1323416 reported by Graham Cox on 2014-05-26
This bug affects 3 people
Affects Status Importance Assigned to Milestone
network-manager (Ubuntu)

Bug Description

My laptop is a Toshiba Satellite L750, which has a Qualcomm Atheros AR9285 Wireless Network Adapter in it. When I was running 13.10 it all worked perfectly fine, but ever since I upgraded to 14.04 - literally, ever since the reboot after installing it - it has been problematic. The curious thing is though, it is only problematic connecting to the home Wi-fi and not to other wi-fi services. Specifically, I am now connected to my Android phone acting as a wi-fi hotspot so that I can post this question, and it works perfectly. This laptop is the only device in the house that has trouble connecting to this wi-fi router as well - our tablets and phones all connect perfectly well, as does my partners Windows laptop. Also, the connection to the home wi-fi will sometimes work perfectly well and other times just not work at all, and the only thing I've been able to find that will make any difference at all is to just wait and try again later. If it doesn't work now - which it doesn't - then in an hours time it might work perfectly well as if nothing was wrong, but if I then shut the lid and come back it will stop working again...


$ lspci | grep -Ei wireless
02:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
$ lshw
                description: Wireless interface
                product: AR9285 Wireless Network Adapter (PCI-Express)
                vendor: Qualcomm Atheros
                physical id: 0
                bus info: pci@0000:02:00.0
                logical name: wlan0
                version: 01
                serial: e0:ca:94:98:ec:00
                width: 64 bits
                clock: 33MHz
                capabilities: bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=ath9k driverversion=3.13.0-24-generic firmware=N/A ip= latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
                resources: irq:17 memory:c0500000-c050ffff
$ uname -a
Linux daedalus 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

A section of /var/log/syslog from when it tries to connect to the home wi-fi is pasted at too - as it was rather too long to stick in here...

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: network-manager
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.1
Architecture: amd64
CurrentDesktop: Unity
Date: Mon May 26 21:56:00 2014
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2013-12-14 (162 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
 default via dev wlan0 proto static dev wlan0 proto kernel scope link src metric 9
 PATH=(custom, no user)
SourcePackage: network-manager
UpgradeStatus: Upgraded to trusty on 2014-05-17 (9 days ago)
 eth0 802-3-ethernet unavailable /org/freedesktop/NetworkManager/Devices/1
 wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/0
 running connected enabled enabled enabled enabled disabled

Graham Cox (graham-grahamcox) wrote :
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in network-manager (Ubuntu):
status: New → Confirmed
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