I'm seeing the same behaviour on 3.7.2; even echo "NN" > brightness has no effect. I've tried to look at changes between 3.6.11 and 3.7.2 but probably this is beyond my skills ;)
2012/12/20 Fabio Coatti <fabio.coa...@gmail.com>: > In data mercoledì 19 dicembre 2012 17:10:29, hai scritto: >> ----- Original Message ----- >> >> > From: "Fabio Coatti" <fabio.coa...@gmail.com> >> > To: linux-kernel@vger.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 -- Fabio -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
