Bug in 2.6.19 Kernel
In the process of rebuilding my MythTV box with Gentoo, I found a bug in the 2.6.19 kernel when it comes to using wireless and ndiswrapper for my Linksys WMP54G v.4 PCI card.
When you configure the kernel you normally have to only select CONFIG_NET_RADIO=y and CONFIG_NET_WIRELESS=y.
But with the 2.6.19 kernel I discovered via post on a board that you also need to select one of the wireless chipsets as a module, even if you don’t plan on using it. If you don’t do this then CONFIG_NET_RADIO will still be marked as “n” when the kernel is built even though that isn’t what you selected at config time.
To check the required values you can use the following command:
zgrep CONFIG_NET_RADIO /proc/config.gz
zgrep CONFIG_NET_WIRELESS /proc/config.gz
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