Hi, ThinkPad E145 has A4-5000 APU with Radeon HD8330. I run Gentoo Linux. I got working everything I want, except for brightness control. Under kernel 3.12, brightness keys (Fn-F7/F8) do work with acpi_backlight=vendor kernel option until first suspend (via pm-suspend). No related acpi events in userspace, though. Under kernels 3.13 and 3.14, brightness keys do work in POST screen, and stop working right after boot or restore from hibernate. I tried video.use_native_backlight, thinkpad-acpi.brightness_enable and acpi_backlight in different combinations with no luck. They changed the way the brightness interface appears in /sys/class/backlight, acpi_video0 or thinkpad_screen, that's all. I write values to /sys/class/backlight/*/brightness, I then read these values from both brightness and actual_brightness, but screen brightness doesn't change. acpi_listen report keypresses: video/brightnessdown BRTDN 00000087 00000000 video/brightnessup BRTUP 00000086 00000000 thinkpad-acpi reports about unsupported brightness interface. I managed to gather some diagnostics. I uploaded it to pastebin: acpidump http://pastebin.com/6bdx7EAE dmesg http://pastebin.com/LERzAp46 dmidecode http://pastebin.com/GpZ8Sx5Y as well as 3.14 kernel config http://pastebin.com/D5j6PGaq Any suggestions? Thanks! ------------------------------------------------------------------------------ Start Your Social Network Today - Download eXo Platform Build your Enterprise Intranet with eXo Platform Software Java Based Open Source Intranet - Social, Extensible, Cloud Ready Get Started Now And Turn Your Intranet Into A Collaboration Platform http://p.sf.net/sfu/ExoPlatform _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
