My wifi connection is unstable. It disconnects every few minutes. Sometime it will reconnect on its own and at other times I have to manually reconnect. I have Windows 8.1 running on a different partition in the same machine. Wifi works fine in Windows 8.1. So, this seems to be an issue with Ubuntu.

[Karthik Venkataramani]

arthik@Karthik-Linux:~$ sudo lshw -C network
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 02
       serial: 6c:62:6d:85:93:7b
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:41 ioport:d800(size=256) memory:febff000-febfffff memory:fdff0000-fdffffff memory:febc0000-febdffff
  *-network
       description: Wireless interface
       physical id: 1
       bus info: usb@1:6
       logical name: wlan0
       serial: c0:4a:00:21:a8:c3
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=rtl8192cu driverversion=3.13.0-35-generic firmware=N/A ip=192.168.8.110 link=yes multicast=yes wireless=IEEE 802.11bgn
karthik@Karthik-Linux:~$ ubuntu-bug -w
karthik@Karthik-Linux:~$ ubuntu-bug evince
karthik@Karthik-Linux:~$ ubuntu-bug evince
karthik@Karthik-Linux:~$ Created new window in existing browser session.
sudo lshw -C network
[sudo] password for karthik:
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 02
       serial: 6c:62:6d:85:93:7b
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:41 ioport:d800(size=256) memory:febff000-febfffff memory:fdff0000-fdffffff memory:febc0000-febdffff
  *-network
       description: Wireless interface
       physical id: 1
       bus info: usb@1:6
       logical name: wlan0
       serial: c0:4a:00:21:a8:c3
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=rtl8192cu driverversion=3.13.0-35-generic firmware=N/A ip=192.168.8.110 link=yes multicast=yes wireless=IEEE 802.11bgn

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: evince 3.10.3-0ubuntu10.1
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Sep 6 15:11:28 2014
InstallationDate: Installed on 2014-09-04 (1 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: evince
UpgradeStatus: No upgrade log present (probably fresh install)

[penalvch (penalvch)]

Karthik Venkataramani, 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 1366423

[Launchpad Janitor (janitor)]

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