Ok so on v3.7-rc1 [and I suspect up] I can manually control the brightness by echoing to /sys/class/backlight/intel_backlight/brightness But I still can't use the buttons to control it (it only goes one tick down from max and stops there). I'm using GNOME3 from a x86_64 unstable debian install [up to date with latest]. I just noticed that under v3.7 I have a new directory /sys/class/backlight/acpi_video1 which is what GNOME is actually controlling. I can't disable ACPI video control so is there a workaround? Tom ----- Original Message ----- > From: "Daniel Vetter" <daniel.vetter at ffwll.ch> > To: "Tom St Denis" <tstdenis at elliptictech.com> > Cc: linux-kernel at vger.kernel.org, "intel-gfx" <intel-gfx at lists.freedesktop.org>, "dri-devel" > <dri-devel at lists.freedesktop.org> > Sent: Sunday, 2 December, 2012 6:43:14 AM > Subject: Re: Brightness control fails between 3.6.8 and 3.7.0-rc7 (Intel 915/Dell Vostro 3560) > > Including a bunch more lists to the cc. > > On Sun, Dec 2, 2012 at 12:42 PM, Daniel Vetter > <daniel.vetter at ffwll.ch> wrote: > > On Sun, Dec 2, 2012 at 12:32 PM, Tom St Denis > > <tstdenis at elliptictech.com> wrote: > >> I've narrowed it down to sometime between v3.6.8 and v3.7-rc1. So > >> none of the v3.7 series will work with this GPU/panel. > > > > Hm, that's still a few hundred relevant commits intermingled with a > > few thousand that likely don't matter ;-) Can you please attempt a > > kernel bisect with git? For a nice howto check out > > http://www.reactivated.net/weblog/archives/2006/01/using-git-bisect-to-find-buggy-kernel-patches/ > > > > Also, can you please check which of the different backlight > > controls > > in /sys/class/backlight work on 3.6 (and whether any of them still > > work on 3.7)? > > > > Thanks, Daniel > > -- > > Daniel Vetter > > Software Engineer, Intel Corporation > > +41 (0) 79 365 57 48 - http://blog.ffwll.ch > > > > -- > Daniel Vetter > Software Engineer, Intel Corporation > +41 (0) 79 365 57 48 - http://blog.ffwll.ch >
