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Message-ID: <1425298.zMcaSB7taE@calvin> Date: Thu, 20 Dec 2012 10:27:57 +0100 From: Fabio Coatti <fabio.coatti@...il.com> To: Tom St Denis <tstdenis@...iptictech.com>, linux-kernel@...r.kernel.org Subject: Re: 3.7.X vs 3.6.11 HP Folio 9470m brightness regression? In data mercoledì 19 dicembre 2012 17:10:29, hai scritto: > ----- Original Message ----- > > > From: "Fabio Coatti" <fabio.coatti@...il.com> > > To: linux-kernel@...r.kernel.org > > Sent: Wednesday, 19 December, 2012 5:01:30 PM > > Subject: 3.7.X vs 3.6.11 HP Folio 9470m brightness regression? > > > > Hi, > > I'm testing kernels 3.7.X vs 3.6.11 on an HP Folio 9470m machine, > > i915 > > driver for a VGA compatible controller: Intel Corporation 3rd Gen > > Core > > processor Graphics Controller (rev 09) 8086:0166 > > > > With 3.6.11, the brightness can be correctly set using fn+f9/10: kde > > shows the bar and brightness changes. > > > > With 3.7.1 kde shows the percentage bar and > > /sys/class/backlight/acpi_video0/brightness is updated, but the > > screen > > brightness does not changes. > > I had a similar problem with my Dell laptop and i915/acpi... > > Is there another acpi_video? device? In my case two showed up in 3.7 > whereas in 3.6 there was one. In 3.7 it was controlling the wrong one > apparently. Well, this seems not to be the case, I have only one acpi_video: calvin ~ # ls -l /sys/class/backlight/ totale 0 lrwxrwxrwx 1 root root 0 20 dic 09.20 acpi_video0 -> ../../devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 calvin ~ # ls -l /sys/devices/pci0000:00/0000:00:02.0/backlight totale 0 drwxr-xr-x 3 root root 0 20 dic 09.20 acpi_video0 -- Fabio -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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