I can confirm this problem on an intel core 2 duo dv2100t with bios versions f.22-f.26. The older versions of the bios (f.11 and f.12) work perfectly but intel's VT virtualization is disabled in them.
Downgrading the bios will probably solve the problem.The older bios versions are not listed on HP's site any more, but they still have them on their ftp-server. The f.12, which is the newest version with which brightness adjustments work for me, can be downloaded from ftp://ftp.hp.com/pub/softpaq/sp34001-34500/sp34171.exe Description: ftp://ftp.hp.com/pub/softpaq/sp34001-34500/sp34171.html -- Brightness control via ACPI in HP notebooks https://bugs.launchpad.net/bugs/82188 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
