On 01/21/2014 08:11 PM, Matthew Garrett wrote:
On Tue, 2014-01-21 at 13:32 +0800, Aaron Lu wrote:
On 01/21/2014 11:17 AM, Matthew Garrett wrote:
We know that Windows 8 graphics drivers don't use the ACPI interface, and that systems change their behaviour as a result, in some cases with absolutely no way for the ACPI interface could possibly work. I haven't seen any cases where that's obviously true for any non-Windows 8
Perhaps I'm not clear, I didn't mean non-Windows 8 systems will all favor GPU's interface, I just meant for one specific win7 laptop I could re-use the existing code to make the GPU's interface as the only one left. And to achieve this, the Win8 OSI check in acpi_video_verify_backlight_support has to be gone.
We could do that, but why do we think that's the correct fix? The plan is to remove the native list entirely and do this for all Windows 8
What do you mean by native list, systems that are Win8 based but don't work with the GPU's backlight interface? If so, it doesn't seem we have such a native list now and if we don't make use_native_backlight=1 by default, we couldn't generate such a list to start with...
BTW, it doesn't seem everyone agrees with this plan. May I ask, Rafael and Daniel, what's your opinion please? We need to agree with something to move things forward.