I have previously blogged about Installing Ubuntu Gutsy Gibbon (7.10) into a LG R405. I have now updated the system up to Ubuntu Hardy Heron (8.04) and have some remaining issues.
WiFi support is available through NDISwrapper and with more reliability through madwifi. To setup NDISwrapper you can download the package ndisgtk and use the Windows' drivers from on of the laptop's CDs.
Regarding madwifi, if you follow ticker #1192, you will find out version 0.9.5 will bring support for the wireless chipset AR2425. Meanwhile, you can download the driver from a SVN branch at the madwifi's repositories. NetworkManager works best with madwifi's driver (this includes support for eduroam).
Bluetooth got broken in the update (for some Nokia's mobiles). If you follow launchpad's bug #211252, you will notice that you may install Debian's SID bluez-utils to fix the issue (I have left a comment in the ticket stating just that). Fortunately, the regression has been fixed upstream. The fix, however, has not been applied in the Ubuntu package.
Sleep and hibernate work. Well... mostly. After waking up the sound dies (see Ubuntu's bug #200210). I have not bothered with scavenging the net to a fix/bug report.
The (graphical) intel driver has been improved (it is no longer blacklisted in compiz). Power management is better, since the brightness is not crazy anymore.
Concluding, support is still sub-optimal. Sadly, the alternatives are scarse.
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