Thanks Daniel I am recompiling the kernel. I will also open a bug in bugzilla when I collect all the relative information. Chris On Mon, Mar 4, 2013 at 9:50 AM, Daniel Vetter <daniel.vetter at ffwll.ch> wrote: >> Two things to test: >> - Can you please check whether any of the backlight drivers in >> /sys/class/backlight does anything? You need to frob the brightness >> file. Please also list all the drivers you have. This is the good one before the acpi change. lrwxrwxrwx. 1 root root 0 Mar 4 15:05 acpi_video0 -> ../../devices/pci0000:00/0000:00:01.0/0000:01:00.0/backlight/acpi_video0 lrwxrwxrwx. 1 root root 0 Mar 4 15:05 acpi_video1 -> ../../devices/pci0000:00/0000:00:02.0/backlight/acpi_video1 lrwxrwxrwx. 1 root root 0 Mar 4 15:05 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight The brightness,actual_brightness and max_brightness are all 4648. >> - Please grab the lates git of intel-gpu-tools and attach the output >> of intel_reg_dumper for both a working and a broken kernel. The git >> tree is at: I attach the reg dump file here. Thanks Chris -------------- next part -------------- A non-text attachment was scrubbed... Name: intel-reg-dump.good Type: application/octet-stream Size: 14954 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20130304/6fc13b44/attachment-0001.obj>
