On Tue, Jun 11, 2013 at 02:49:21PM -0000, Nathaniel Roach wrote: > Under patched 3.10-rc5: Backlight control is *COMPLETELY* dependent on > the shell being able to process the request - Backlight control does not > work while booting or while the shell is frozen. Otherwise, I appreciate > the finer control.
Yes, this solution essentially disables ACPI backlight support on Win8 systems when i915 registers a backlight interface. Testing seems to indicate that Win8 isn't using the ACPI backlight interface, and thus we can't assume that firmware vendors have actually tested this interface to verify that it actually works (problems with the ACPI backlight interfaces on Win8 machines haven't been isolated to only Lenovos). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1098216 Title: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1098216/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
