Amr, we have tried that, but it doesn't look like upstream will commit to releasing 3.28.4 in time for Ubuntu 18.04.2 LTS. Nor is upstream willing to let the Ubuntu developers handle the 3.28.4 release.
https://wiki.ubuntu.com/BionicBeaver/ReleaseSchedule
Amr, we have tried that, but it doesn't look like upstream will commit to releasing 3.28.4 in time for Ubuntu 18.04.2 LTS. Nor is upstream willing to let the Ubuntu developers handle the 3.28.4 release.
https:/ /wiki.ubuntu. com/BionicBeave r/ReleaseSchedu le