> On Sun, 17 Aug 2014, Bertrik Sikken <bertrik@xxxxxxxxx> wrote: >> On 15-8-2014 3:43, Jani Nikula wrote: >>> On Thu, 14 Aug 2014, Bertrik Sikken <bertrik@xxxxxxxxx> wrote: >> >>>> Attached is dmesg output from booting kernel 3.14-2 (debian unstable) >>>> with drm.debug=0xe and the samsung_laptop module enabled, from my >>>> Samsung N150plus netbook. >>> >>> Have you tried 3.15? >> >> I've built the v3.15 kernel (using the .config file from debian >> unstable and doing make oldconfig). >> >> The backlight is at maximum brightness after boot and I can't control >> it using the backlight buttons, nor by writing to >> /sys/class/backlight/samsung/brightness >> (say half the value or 1/10th of max_brightness) >> >> Backlight does work when writing >> /sys/class/backlight/intel_backlight/brightness > > How about disabling samsung backlight module with 3.15? I'm not sure what you mean by that. As I understand it, there are three ways to control the backlight on this netbook: using intel_backlight, samsung_laptop (using a "sabi" interface) and acpi_video. Backlight control using the samsung_laptop driver no longer seems to work after the change. If I disable it (e.g. by blacklisting it), I expect it to no longer work at all obviously. What do you want me to test exactly? Kind regards, Bertrik _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
