Ubuntu
linux package

  1. Bug #1098216
  2. Comment #38

Comment 38 for bug 1098216

Revision history for this message
Seth Forshee (sforshee) wrote : Re: Regression in brightness control on Lenovo Thinkpad X230 and X1 Carbon

Or if you still have other kernels installed even easier would be to boot to a kernel with which you experienced the issue.