On 07/13/2014 12:06 AM, Julian Wollrath wrote: > Hi, > > 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 ... Thanks, Aaron > > > With best regards, > Julian Wollrath > -- > 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 > -- 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
