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I have Windows 7 and Ubuntu 13.10 dual booted on my laptop, a Toshiba Satellite L505.

I have been using this version of Ubuntu on my laptop for about a month or so and installing and uninstalling different versions to see what my laptop could handle and what appealed to me. So far I haven't had any major problems from this installation and this is the first time this problem came up.

tl;dr: wifi stopped working in the middle of use. ethernet still works. computer lists available wirless connections, tries to connect to app, displays disconnected from network message after about 30 seconds of trying to connect.

The problem started while I was playing a game called PokeMMO. The game hasn't caused problems before either. During the game, I suddenly lost WiFi connection at a part where I couldn't exit the game, so I had to restart the system. I did not do a hard shutdown. I didn't receive any errors during boot.

WiFi did not connect at logon screen as it usually does. Logged in, laptop is automatically trying to connect to ap, displays disconnected from host after about 30 seconds, tries to reconnect, same thing happens, process repeats. Verified security type and password are set correctly. Tried to use command:

sudo vi /etc/network/interfaces

I am not familiar with how to edit this file through the terminal, but the output was:

interfaces(5) file used by ifup(8) and ifdown(8)

auto lo

iface lo inet loopback

Sometimes when I try to connect to the ap, the available wireless connections list will become empty. and won't display the available connections unless I reboot.

lspci output is:

>00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)

>00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)

>00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)

>00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)

>00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)

>00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)

>00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)

>00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)

>00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)

>00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 03)

>00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)

>00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)

>00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)

>00:1d.3 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)

>00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)

>00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)

>00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03)

>00:1f.2 SATA controller: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 4 port SATA Controller [AHCI mode] (rev 03)

>00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)

>02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)

>03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller (rev 10)

sudo ifup wlan0 displays

Ignoring unknown interface wlan0=wlan0.

Output of

dmesg | grep wlan

is

[ 25.570249] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

[ 25.570584] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

Other devices connect to the ap just fine. Help would be greatly appreciated.

How can I fix this?

Update!

Apparently it is just that specific network that I am unable to connect to. So I'm assuming the problem is with the router not liking my laptop. I just think it's a bit strange that other devices don't have any connectivity problems.

share|improve this question
    
Check the output of dmesg | grep wlan. –  mikewhatever Nov 22 '13 at 8:16
    
added the output to the bottom of the post –  Jesse Ramos Nov 23 '13 at 1:57
    
If that was all of the output, I suspect you might have a broken device. May I suggest going to the ubuntuforims.org for troubleshooting. Use the wireless script to gather info. –  mikewhatever Nov 23 '13 at 8:55
    
But as I stated in the update at the bottom of the post, the wifi works with other wireless networks. Does that mean my adapter could still be broken? –  Jesse Ramos Nov 26 '13 at 3:16
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