You don't have to add the PPA. Just install the linux-image-generic-lts-backport-oneiric package from the lucid-updates suite:
sudo apt-get install linux-image-generic-lts-backport-oneiric
If you're using out-of-tree modules like Virtual Box or proprietary drivers, you'll likely need the headers as well:
sudo apt-get install linux-headers-generic-lts-backport-oneiric
Other package names can be found on http://packages.ubuntu.com/source/lucid-updates/linux-meta-lts-backport-oneiric
I managed to downgrade the wireless driver but I still have the same problems. I also tried other drivers such as bcma and even ndiswrapper (Windows drivers) and the problem persists. I believe the problem is in the new kernel, so it seems I'll have to go back to 12.10.
Having installed Ubuntu since 11.04, from my experience, it gets harder in every Ubuntu release to get the same wifi card working...
Anyway, if it's useful for someone, this is how I downgraded the driver:
First, uninstall the current driver and install the new one from the .deb file.
sudo apt-get remove --purge bcmwl-kernel-source
sudo dpkg -i /deb_file_location/bcmwl-kernel-source_5.100.82.112+bdcom-0ubuntu3_amd64.deb
Lock the package version to prevent updates.
pkexec gedit /etc/apt/preferences.d/bcmwl-kernel-source
and paste in the pollowing:
Package: bcmwl-kernel-source
Pin: version 5.100.82.112+bdcom*
Pin-Priority: 1001
I also blacklisted the other modules to be sure that they don't get loaded on boot, but this may not be necessary in all cases.
pkexec gedit /etc/modprobe.d/blacklist-bcm43.conf
and add the following:
blacklist brcmsmac
blacklist bcma
Reboot and done. You can check that the driver is in use by typing:
lspci -k | grep wl
Which should return:
Kernel driver in use: wl
Best Answer
As it stands currently (unless something drastic happens), yes. We expect this to land in the
compat-wireless
package as soon as it has been approved. The current plan is to bring it in to Maverick (10.10) in this way and then, potentially, to backport to Lucid (10.04)~JFo