i just installed the latest mainline kernel available in the mainline ppa which was 4.16.1-041601-generic_4.16.1-041601.201804081334 and the problem is just the same.
i just installed the latest mainline kernel available in the mainline ppa which was 4.16.1- 041601- generic_ 4.16.1- 041601. 201804081334 and the problem is just the same.