So I upgraded my Toshiba A300-07F from Kubuntu Linux Jaunty Jackelope 9.04 to Kubuntu Karmic Koala 9.10.
As I mentioned in the post linked above, I had issues with the wireless card, which is an Intel 5100, using the iwlagn driver. I had to download the driver from the Linux Wireless web site, compile it, and get the firmware from Intel's web site.
I had to do something similar on Karmic: download and compile the drivers. What I did not do is download the firmware, since the version that ships with Karmic is the same as the version on Intel's web site, so one less step here.
Here is the output from lshw for reference:
# lshw -C network description: Wireless interface product: Wireless WiFi Link 5100 vendor: Intel Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: 00 serial: [redacted] width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlagn driverversion=2.6.31-14-generic firmware=N/A ip=192.168.0.10 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn resources: irq:30 memory:d4700000-d4701fff
Installing the updated drivers
And here are the steps I went through to get wireless to work:
First download the 2009-10-28 version of the drivers.
Then compile and install as follows:
tar xjf compat-wireless-2009-10-28.tar.bz2 cd compat-wireless-2009-10-28 make sudo make install sudo shutdown -r now
I also found that wicd is more helpful than KDE's network management Plasmoids, has a more comprehensive and easy user interface, and supports the encryption schemes in wireless better (WEP, WPA, ...etc) without having to manually configure them in wpa_supplicant by hand editing the configuration file.
Problem after suspend
There is one more snag to overcome: when I ask the laptop to suspend, wireless does not work after a resume.
To solve this issue, I created a file called /etc/pm/config.d/01iwlagn, and put this in it:
This makes wireless behave normally after a suspend/resume.