I confirm this bug on my thinkpad T510. A workaround is to change brightness in text-mode VT (ie. crtl+alt+f1, change brightness, ctrl+alt+f7 to switch back to X.)
The lack of OSD is a new development since 26/02, I think it requires a separate bug report. -- g-p-m's brightness control doesn't work on Thinkpad T60 https://bugs.launchpad.net/bugs/527436 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs