Sony Vaio network card

Hi all, I am looking for some help with my Vaio, model FZ21S loaded with UBUNTU.
It did have a utility to switch the wireless network between B G or N/DRAFT of course this no longer exists and i’m sure that since loading UBUNTU the network card is now operating on the N/DRAFT frequency only. Does any one know how to turn it back to B G frequency.
This is because my router only kicks out B G frequency. It will sometimes connect but has limited connectivity. Can anyone help please i would be most grateful.

i have since learned that my router is indeed N wireless so i dont think that this was the problem. I did manage to get it connected briefly today and when i did a bandwidth speed check the download speed was fine but there was no upload speed reported ?? would this hamper my overall connectivity ? and if so what can i do to solve this. btw other laptops using the wireless are ok.

Hi RichKelley, and welcome to the forum :slight_smile:

Can you open a terminal (Ctrl+Alt+T) and enter:

sudo lshw -C network

hit enter, and your password when asked … then post back the output.

can you do the same thing with:



sudo iwlist scanning


And which version of Ubuntu are you running? … can you send the output from:

cat /etc/*-release


uname -srp

Thanx for a quick reply Mark
the 1st code i put in and pressed enter it asked for my password but my keyboard was no longer working so i put the password in anyway, when i entered it came up sudo 1 command not found.

ifconfig come up with
eth0 link encap: ethernet HWaddr 00:1a:80:18:40:53
up broadcast multicast mtu:1500 metric:1
rx and tx all values zero
collisions:0 txquelen:1000
rx bytes : (0.0 b) tx bytes same

lo linc encap:local loopback
inet addr: mask:
inet6 addr: ::1/28 scope:host
up loopback running mtu: 16436 metric 1
rx and tx packets all values zero
collisions: 0 txquelen:0
rx bytes:(0.0 B) tx bytes:0 (0.0 B)

wlan linc encap:ethernet HWaddr 00:13:e8:bc:32:59
inet6 addr : fe80::213:e8ff:febc:3259/64 scope: linc
up broadcast multicast mtu:1500 metric:1
rx packets:155 the rest are zero
tx packets:169 the rest are zero
collisions:0 txquelen:1000
rx bytes:28233 (28.2 kb) tx bytes:2735 (27.3 kb)

code iw1 ist scanning came back command not found

code cat /etc/*-release come up no such file or directory

uname sip come back linux i686 i386

the version is UBUNTU 11.10

i hope this all means something to you it does’nt mean much to me lol

I need the output from that first command … so can you try again:

sudo lshw -C network

Things to be aware of .

commands MUST be entered EXACTLY as shown … the above command doesn’t contain a “1”, it’s a lower case L

Linux commands ARE case sensitive … so that’s a capital “C”

When entering your password in a terminal, nothing will be echoed to screen (not even ******) but it IS going in, so just enter your password and hit enter.

I’ve done a little research and it looks like your laptop probably has an Intel PRO/Wireless 4965 AG or AGN [Kedron] … but I won’t know for sure till I get the output from the above command.

But just as a matter of interest, what happens if you run these 2 commands:

sudo rmmod -f iwlagn


sudo modprobe iwlagn swcrypto=1

For clarity, those are

sudo rmmod -f iwlagn
sudo modprobe iwlagn swcrypto=1

If those commands run without error … how is your wireless connection now ?

Be aware - if that works, it won’t survive a reboot, but if it works we can add a file /etc/modprobe.d/iwlang.conf and iclude those options … so just for now I just want to know if that helps.

many thanx for the tips mark, i’m new to this so i will run those codes again when i get chance (out atm).

Whenever you’re ready :slight_smile:

ok Mark here is some of the info you asked for but there has been a development, my wifi has worked fine today so i think it maybe an router problem or an isp problem i will see how it goes.
as for the result of rmmod -f iwlagn = error: removing iwlagn no such file or directory
and the result of sudo modprobe iwlagn swcrypto=1 nothing came back
I am sorry if the above info confuses the issue i would say though that the connection is not that strong and only manages 50 to 65 mbps

description: Wireless interface
product: PRO/Wireless 4965 AG or AGN [Kedron] Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:06:00.0
logical name: wlan0
version: 61
serial: 00:13:e8:bc:32:59
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwl4965 driverversion=3.0.0-13-generic firmware= latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
resources: irq:47 memory:fa000000-fa001fff
description: Ethernet interface
product: 88E8036 PCI-E Fast Ethernet Controller
vendor: Marvell Technology Group Ltd.
physical id: 0
bus info: pci@0000:08:00.0
logical name: eth0
version: 16
serial: 00:1a:80:18:40:53
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.28 firmware=N/A latency=0 link=no multicast=yes port=twisted pair
resources: irq:45 memory:fc000000-fc003fff ioport:6000(size=256)

No, as I said I was guessing at the driver … for your card it used to be iwlagn, but apparently it is now iwl4965

Still if it’s working, it doesn’t matter now :slight_smile:

Good luck, and if it gives you problems in the future, give us a shout and we’ll see what we can do.

Just to clear this thread up. seems my router was at fault so all is good in wifi land again. I do have some other issues but i will post the questions in the right place, Once again many thanx Mark.

No problem … not that I actually did anything :slight_smile: