On Fri, Aug 02, 2013 at 02:00:42PM +0800, Aaron Lu wrote:
Assume you have specified to use intel_backlight in xorg.conf
Right, I have:
Section "Device" Option "Backlight" "intel_backlight" Identifier "Card0" Driver "intel" BusID "PCI:0:2:0" EndSection
in there currently.
does booting with video.brightness_switch_enabled=0 help?
Nope.
Kernel command line is like this:
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.11.0-rc3+ root=/dev/sdb2 ro root=/dev/sdb2 ignore_loglevel log_buf_len=10M resume=/dev/sdb1 acpi_backlight=vendor video.brightness_switch_enabled=0 i915.i915_enable_rc6=4 i915.i915_enable_fbc=1 i915.lvds_downclock=1 i915.powersave=1
and acpi_backlight=vendor doesn't make any difference. It still works over sysfs though.
Thanks.