There is some work in progress towards fixing this bug, under the duplicate report #935778. There is now a kernel that does successfully allow the brightness to be changed after suspend, albeit with a few unresolved issues.
I am marking this bug as a duplicate of #935778 to keep everything together with the (closest) solution.
There is some work in progress towards fixing this bug, under the duplicate report #935778. There is now a kernel that does successfully allow the brightness to be changed after suspend, albeit with a few unresolved issues.
I am marking this bug as a duplicate of #935778 to keep everything together with the (closest) solution.