於 三，2012-09-26 於 16:48 -0400，Dan 提到： > Hello, > > Apologies if this was sent to the wrong place. > > With an Acer AOD255E netbook, the backlight goes out for exactly 10 > seconds before returning while booting. > > This is a backlight issue and not KMS, as I can shine a flashlight at > the screen and still see boot text scrolling. > > With "acpi=off" appended to the kernel line, this no longer occurs (Fn > key backlight controls still work with this appended). With every > other acpi option I have tried, this still occurs though. This > includes "acpi_backlight" and "acpi_display_output". With > "acpi_backlight=vendor" the entry in /sys/class/backlight changes from > acpi_video0 to acer_wmi, but backlight still goes out. > > Otherwise backlight works correctly. Could you please try this kernel parameter? video.use_bios_initial_backlight=0 Thanks Joey Lee -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
