Bug#846882: wrong scale for backlight with Xfce

[Rpnpif]

Le  6 décembre 2016, Andreas Boll a écrit :
> Please follow
> https://01.org/linuxgraphics/documentation/how-report-bugs
> to file a bug with intel.  Let us know the bug number for tracking.

Hello,

This issue is reported upstream here:
https://bugs.freedesktop.org/show_bug.cgi?id=99126

Regards.

-- 
Alain Rpnpif

Bug#846882: wrong scale for backlight with Xfce

[Andreas Boll]

Control: tags -1 upstream

On Tue, Dec 06, 2016 at 05:05:41PM +0100, Rpnpif wrote:
> Le  6 décembre 2016, Andreas Boll a écrit :
> > xserver-xorg-video-intel has some special backlight handling [2] so
> > it's plausible that an updated package could cause regressions related
> > to backlight.
> 
> > > [13.881] 
> > > X.Org X Server 1.16.4
> > > Release Date: 2014-12-20
> > > [13.881] X Protocol Version 11, Revision 0
> > > [13.881] Build Operating System: Linux 3.2.0-4-amd64 i686 Debian
> > > [13.881] Current Operating System: Linux Asus-901 
> > > 4.7.0-0.bpo.1-686-pae #1 SMP Debian 4.7.8-1~bpo8+1 (2016-10-19) i686
> > > [13.881] Kernel command line: 
> > > BOOT_IMAGE=/boot/vmlinuz-4.7.0-0.bpo.1-686-pae 
> > > root=UUID=2ed3bc82-5cc0-4529-a13c-2e6f80b5b588 ro resume=/dev/sdb1 quiet  
> > 
> > snip
> > 
> > > [14.063] (II) intel(0): Using Kernel Mode Setting driver: i915, 
> > > version 1.6.0 20160425
> > > [14.063] (II) intel(0): SNA compiled: xserver-xorg-video-intel 
> > > 2:2.99.917+git20161105-1~bpo8+1 (Vincent Cheng )  
> > 
> > Reassigning to xserver-xorg-video-intel for now.
> > 
> > Thanks,
> > Andreas
> > 
> > [1] http://snapshot.debian.org/package/xserver-xorg-video-intel/
> > [2] 
> > https://cgit.freedesktop.org/xorg/driver/xf86-video-intel/log/?qt=grep=backlight
> 
> You are right!
> The 2:2.99.917+git20160706-1~bpo8+1 release works fine but not
> 2:2.99.917+git20161105-1~bpo8+1.
> 
> So it is really a regression on the last release.
> Perhaps a wrong choice of the best iface or about, or other thing.
> 
> My system have two backlight interfaces:
> /sys/class/backlight/eeepc and /sys/class/backlight/intel_backlight
> 
> The first is safer but the second permits atomic variations of the
> backlight.
> 
> Thank you.
> 
> -- 
> Alain Rpnpif

Please follow
https://01.org/linuxgraphics/documentation/how-report-bugs
to file a bug with intel.  Let us know the bug number for tracking.

Thanks,
Andreas


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Processed: Re: Bug#846882: wrong scale for backlight with Xfce

[Debian Bug Tracking System]

Processing control commands:

> tags -1 upstream
Bug #846882 [xserver-xorg-video-intel] xserver-xorg-video-intel: wrong scale 
for backlight with Xfce
Added tag(s) upstream.

-- 
846882: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=846882
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems

Bug#846882: wrong scale for backlight with Xfce

[Rpnpif]

Le  6 décembre 2016, Andreas Boll a écrit :
> xserver-xorg-video-intel has some special backlight handling [2] so
> it's plausible that an updated package could cause regressions related
> to backlight.

> > [13.881] 
> > X.Org X Server 1.16.4
> > Release Date: 2014-12-20
> > [13.881] X Protocol Version 11, Revision 0
> > [13.881] Build Operating System: Linux 3.2.0-4-amd64 i686 Debian
> > [13.881] Current Operating System: Linux Asus-901 4.7.0-0.bpo.1-686-pae 
> > #1 SMP Debian 4.7.8-1~bpo8+1 (2016-10-19) i686
> > [13.881] Kernel command line: 
> > BOOT_IMAGE=/boot/vmlinuz-4.7.0-0.bpo.1-686-pae 
> > root=UUID=2ed3bc82-5cc0-4529-a13c-2e6f80b5b588 ro resume=/dev/sdb1 quiet  
> 
> snip
> 
> > [14.063] (II) intel(0): Using Kernel Mode Setting driver: i915, version 
> > 1.6.0 20160425
> > [14.063] (II) intel(0): SNA compiled: xserver-xorg-video-intel 
> > 2:2.99.917+git20161105-1~bpo8+1 (Vincent Cheng )  
> 
> Reassigning to xserver-xorg-video-intel for now.
> 
> Thanks,
> Andreas
> 
> [1] http://snapshot.debian.org/package/xserver-xorg-video-intel/
> [2] 
> https://cgit.freedesktop.org/xorg/driver/xf86-video-intel/log/?qt=grep=backlight

You are right!
The 2:2.99.917+git20160706-1~bpo8+1 release works fine but not
2:2.99.917+git20161105-1~bpo8+1.

So it is really a regression on the last release.
Perhaps a wrong choice of the best iface or about, or other thing.

My system have two backlight interfaces:
/sys/class/backlight/eeepc and /sys/class/backlight/intel_backlight

The first is safer but the second permits atomic variations of the
backlight.

Thank you.

-- 
Alain Rpnpif