On sam., 2013-10-12 at 00:10 +0200, Rafael J. Wysocki wrote: > On Friday, October 11, 2013 12:42:43 PM Josh Boyer wrote: > > On Fri, Oct 11, 2013 at 9:27 AM, Aaron Lu <aaron.lu@xxxxxxxxx> wrote: > > > v5: > > > 1 Introduce video.use_native_backlight module parameter and set its > > > value to false by default as suggested by Rafael. For Win8 systems > > > which have broken ACPI video backlight control, the parameter can be > > > set to 1 in kernel cmdline to skip registering ACPI video's backlight > > > interface. Due to this change, the acpi_video_verify_backlight_support > > > is moved from video_detect.c to video.c - patch 3/4; > > > > That's a fairly untenable position for distro kernels to be in. They > > now have to ask every user that reports an issue with the backlight to > > try setting that option on the command line. While I appreciate the > > setting breaks things for some people, doesn't the Win8 issue impact > > far more people? Shouldn't it be defaulted to true? > > Well, we have a rule in the kernel not to introduce regressions for users even > if they are minority. Well, for some users, the regression actually happened when support for Win8 OSI call was introduced. Regards, -- Yves-Alexis
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