Version-Release number of selected component (if applicable):ġ. The computer is a Lenovo Thinkpad X230 () but this seems to affect any hardware using an Intel i915 driver.
It happened after upgrading to kernel version 3.7.2. On Gnome the brightness cursor in System Settings works as well to change screen brightness. sys/class/backlight/acpi_video0/brightness sys/class/backlight/intel_backlight/brightness It's neither related to Gnome as it happens also in KDE (see links at the end of this report)Ĭhanging the brightness works by "echo-ing" a value to these files: It's not a key issue as acpi_listen gets it correctly and the OSD brightness applet appears on keypress (but the brightness bar does not move, nor does the actual brightness). The screen brightness is defined at its maximum value and can not be changed using the hardware buttons (Fn keys).
I915-Don-t-provide-ACPI-backlight-interface-if-firmware-expects-Windows-8Ġ001-backlight-introduce-backlight_device_registered.patchĠ002-ACPI-video-seperate-backlight-control-and-event-inte.patchĠ003-ACPI-video-Do-not-register-backlight-if-win8-and-nat.patchĠ004-thinkpad-acpi-fix-handle-locate-for-video-and-query-.patchĠ001-ACPI-video-Add-systems-that-should-favor-native-back.patch Acpi-video-add-function-to-support-unregister-backlight-interfaceĪCPICA-Add-interface-for-getting-latest-OS-version-requested-via-_OSI
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