Maybe you could install ubuntu 5.0 kernel by apt command:
apt-cache search linux-image* | less find the ubuntu 5.0 kernel, then install this kernel by sudo apt-get install $kernel_name $kernel_module_extra_name.
reboot
Maybe you could install ubuntu 5.0 kernel by apt command:
apt-cache search linux-image* | less module_ extra_name.
find the ubuntu 5.0 kernel, then install this kernel by sudo apt-get install $kernel_name $kernel_
reboot