> This backlight problem appears only when I run linux with KMS framebuffer, > when I run linux without KMS framebuffer, the backlight is always on. > > Yes, I have ACPI enabled and ACPI backlight enabled, but running: > echo 100 > /sys/class/backlight/psb-bl/brightness
psb-bl/backlight willbe the backlight of the graphics not the ACPI driver. You may need to enable that and also hack the acpi_video code to add it anyway on that device. > But, in the end, this means that the driver si correctly loaded and the > framebuffer is running but the panel backlight is off? > In other words, I can't see anything only because the backlight is off? I think so. > I don't know which could be the maximum value, there are any standard values > for backlight settings? I could try setting some values and see what > happens... Unfortunately not - and I have no idea what overdriving it would do to the hardware. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
