This issue only happens in 4.15.0-29.31. No issue on prior versions (i.e. 4.15.0-23 and 4.15.0-20). No issue on latest upstream kernel 4.18.0-041800rc7. No issue on 4.16.0-041600.
This issue only happens in 4.15.0-29.31. No issue on prior versions (i.e. 4.15.0-23 and 4.15.0-20). No issue on latest upstream kernel 4.18.0-041800rc7. No issue on 4.16.0-041600.