Hi, Am Mon, 14 Jul 2014 10:06:21 +0800 schrieb Aaron Lu <aaron.lu@xxxxxxxxx>: > > changing the brightness on my Thinkpad X230 with Intel HD4000 > > graphics, stopped working after commit 886129a8eebe (ACPI / video: > > change acpi-video brightness_switch_enabled default to 0). Changing > > it back to 1, fixes the problem, if "acpi_osi=!Windows 2012" is > > also set. Before that commit just setting "acpi_osi=!Windows 2012" > > was enough to get changing the brightness working. > > Does your system have /sys/class/backlight/intel_backlight? Does it > work if you manually change the brightness file like this: > # cd /sys/class/backlight/intel_backlight > # cat max_brightness > xxxxx > # echo xxx > brightness > # echo xxx > brightness > ... yes, my system has /sys/class/backlight/intel_backlight and changing the brightness works with writing to the "brightness"-file. Cheers, Julian -- 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
