On Fri, 20 May 2016 13:45:30 +0800, Aaron Lu said: > On 05/20/2016 11:05 AM, Valdis.Kletnieks@xxxxxx wrote: > > On Thu, 19 May 2016 18:53:17 -0400, Valdis.Kletnieks@xxxxxx said: > > > >>>> next-20160512 sets the screen brightness to about 40%-ish or so, rather > >>>> than the 100% intensity I want. > > Do you mean after boot, the screen brightness is now 40% instead of the > previous 100%? Are you using a GUI? Nope, even the very first line of output from initramfs is dim, and if I then reboot and go into the BIOS settings, the screen intensity is at 40%. While it's rebooting, the Dell bios splash will start off bright and then suddenly dim down. With the patches reverted: [/sys/class/backlight/acpi_video0] grep . *bright* actual_brightness:95 brightness:95 max_brightness:95 And the weird part inside the kernel - on a kernel that has the problem, /sys/class/backlight is *empty* - only '.' and '..' entries. No, I don't understand why the acpi_video0 entry isn't created when that commit is in place.
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