I've installed linux kernel v3.4 in Ubuntu 12.04 containing kernel v3.2 using the answer here - Can I install Linux kernel in Ubuntu appart of the default one?
But v3.4 is showing strange bugs like inability to move mouse (laptop touchpad), inability to connect to wifi, etc.
Could you please tell me how to uninstall v3.4 so that the default version in Linux grub becomes v3.2 as before.