I think I fixed my vivid system by downgrading 2:2.99.917~exp1ubuntu2.2 to 2:2.99.917~exp1ubuntu2build1. I also tried exp1ubuntu3 and it didn't work.
I think I fixed my vivid system by downgrading 2:2.99. 917~exp1ubuntu2 .2 to 2:2.99. 917~exp1ubuntu2 build1. I also tried exp1ubuntu3 and it didn't work.