brightness

[Patrick Dupre]

Hello,

How can I manage the brightness of my laptop ?
 xbacklight -get  (or -set)
does not work.
A gui interface would be helpful.

Thank.

===========================================================================
 Patrick DUPRÉ                                 | | email: [e-mail]
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: [phone]
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================

[Fred Smith]

On Sat, Sep 03, 2016 at 11:34:40AM +0200, Patrick Dupre wrote:
> Hello,
>
> How can I manage the brightness of my laptop ?
>  xbacklight -get  (or -set)
> does not work.
> A gui interface would be helpful.

some (all??) desktop environments have a brightness applet that can be
added to one of the panels. I know that Mate has it, at least.

Fred

[Rex Dieter]

Patrick Dupre wrote:
> How can I manage the brightness of my laptop ?
>  xbacklight -get  (or -set)
> does not work.

xbacklight should work, if not, there's a bug somewhere (I'd encourage you 
to report it).

-- Rex

[geo.inbox.ignored]

hello Patrick.

On 09/03/2016 04:34 AM, Patrick Dupre wrote:
> Hello,
>
> How can I manage the brightness of my laptop ?
>  xbacklight -get  (or -set)
> does not work.
> A gui interface would be helpful.

===>

using centos here, so this may not help. then again, if you are using
kde, it might.

on my laptop, there is a battery state indicator. when i left click it,
a drop down 'power management' window contains a screen brightness
control.

this icon is enabled in 'panel bar' via;

right click panel bar > panel options > add widgets

a window appears with 'battery monitor' icon. click to high light,
click 'star', click 'add widget' at bottom of window.

*also*, do not know if this is related, via;

system settings > advanced > power management >

edit profiles > [any of the profiles] > screen

below 'screen' is level slide bar, below it;

[ ]  enable display power management

this i selected, may or may not be related to 'panel bar'.

hth.

[Patrick Dupre]

Thank.

I am using gnome and I cannot find what you said !

===========================================================================
 Patrick DUPRÉ                                 | | email: [e-mail]
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: [phone]
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================
> Sent: Saturday, September 03, 2016 at 3:59 PM
> From: "geo.inbox.ignored" 
> To: [e-mail]
> Subject: Re: brightness
>
> hello Patrick.
>
> On 09/03/2016 04:34 AM, Patrick Dupre wrote:
> > Hello,
> >
> > How can I manage the brightness of my laptop ?
> >  xbacklight -get  (or -set)
> > does not work.
> > A gui interface would be helpful.
>
> ===>
>
> using centos here, so this may not help. then again, if you are using
> kde, it might.
>
> on my laptop, there is a battery state indicator. when i left click it,
> a drop down 'power management' window contains a screen brightness
> control.
>
> this icon is enabled in 'panel bar' via;
>
> right click panel bar > panel options > add widgets
>
> a window appears with 'battery monitor' icon. click to high light,
> click 'star', click 'add widget' at bottom of window.
>
> *also*, do not know if this is related, via;
>
> system settings > advanced > power management >
>
> edit profiles > [any of the profiles] > screen
>
> below 'screen' is level slide bar, below it;
>
> [ ]  enable display power management
>
> this i selected, may or may not be related to 'panel bar'.
>
> hth.
>
> --
>
> peace out.
>
> CentOS GNU/Linux 6.8
>
> tc,hago.
>
> g
> .
>
> =+=
> Tired of having your microsoft os hacked?
> Change to Linux os, used by microsoft hackers.
> =+=
> in a world with out fences, who needs gates.
> =+=
> --
> users mailing list
> [e-mail]
> To unsubscribe or change subscription options:
> https://lists.fedoraproject.org/admin/lists/[e-mail]
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org

[geo.inbox.ignored]

On 09/03/2016 09:42 AM, Patrick Dupre wrote:
> Thank.
>
> I am using gnome and I cannot find what you said !

===>

gnome seems to be the 'norm' for fedora users. ;=)

any who, after posting, some thoughts which may relate:

video chipset
  laptop make
  laptop age
  fedora version, release
  gnome packages updated

all relate as to 'xbacklight' working with your system.

do you have settings that relate to power management or screen control?

ran a quick search for xbacklight with more hits than i care to read threw.

https://www.ixquick.com/do/search?q=%22xbacklight%22lui=english

most were related to ubuntu, and plenty were fedora.

several were from France.

one interesting hit because it shows many ways to control screen;

https://wiki.archlinux.org/index.php/backlight

wish i could be of more help.

much luck in finding solution.

[Samuel Sieb]

On 09/03/2016 02:34 AM, Patrick Dupre wrote:
> How can I manage the brightness of my laptop ?
>  xbacklight -get  (or -set)
> does not work.
> A gui interface would be helpful.

There should be backlight adjustment keys on your keyboard.  If those 
don't work, then file a kernel bug.  In Gnome, if you open the menu in 
the top-right corner, there should be a brightness slider under the 
volume slider.  Again, if that doesn't work, it's most likely a kernel bug.

If you open a terminal and look in /sys/class/backlight, each directory 
there represents a kernel backlight control interface.  Inside, you can 
write a number to "brightness" in the range 0 to "max_brightness" and it 
should change.  Be careful writing something very low because you might 
not be able to see to turn it back up.

[geo.inbox.ignored]

On 09/03/2016 12:07 PM, Samuel Sieb wrote:
> On 09/03/2016 02:34 AM, Patrick Dupre wrote:
> > How can I manage the brightness of my laptop ?
> >  xbacklight -get  (or -set)
> > does not work.
> > A gui interface would be helpful.
>
> There should be backlight adjustment keys on your keyboard.  If those 
> don't work, then file a kernel bug.  In Gnome, if you open the menu in 
> the top-right corner, there should be a brightness slider under the 
> volume slider.  Again, if that doesn't work, it's most likely a kernel bug.

===>

not familiar with 'gnome thinking', but i guess volume slider is a good
a place as any to include a brightness slider.

as for filing a bug, a 'need to know' is if current version of 'xbacklight'
works with his video chipset. if laptop is old, fedora may have dropped
his chipset. if 'new out of box', current drivers may not work.

Patrick needs to run 'lspci|grep vga' to find his chipset and post it to
see if others with 'xbacklight' working have same chipset.

failing that, joining developers list would get faster reaction than
filing a bug report.
> If you open a terminal and look in /sys/class/backlight, each directory 
> there represents a kernel backlight control interface.  Inside, you can 
> write a number to "brightness" in the range 0 to "max_brightness" and it 
> should change.  Be careful writing something very low because you might 
> not be able to see to turn it back up.

===>

above is covered in search link i posted. did not mention because if
Patrick reads thru search, he will find several links on same and in
more detail.

[Patrick Dupre]

Hello,

Here some feedback:
Linux Sappho 4.7.2-201.fc24.x86_64 #1 SMP Fri Aug 26 15:58:40 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
lspci
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
3D controller: NVIDIA Corporation GM107M [GeForce GTX 960M] (rev a2)
lsmod
video                  40960  3 i915,msi_wmi,nouveau

When I boot, I also use:
nomodeset vga=normal

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected primary 1920x1080+0+0 0mm x 0mm
   1920x1080      0.00*

/sys/class/backlight
is empty

None of the fn key works

I also try to run:
NVIDIA-Linux-x86_64-352.63.run

but I get an error:
The build up seems OK, but

/usr/src/kernels/4.7.2-201.fc24.x86_64/include/linux/pagemap.h:540:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (ret == 0 && span > PAGE_SIZE)
                          ^
     if [ "-pg" = "-pg" ]; then if [ /tmp/selfgz6064/NVIDIA-Linux-x86_64-352.63/kernel/os-interface.o != "scripts/mod/empty.o" ]; then ./scripts/recordmcount  "/tmp/selfgz6064/NVIDIA-Linux-x86_64-352.63/kernel/os-interface.o"; fi; fi;
   /usr/src/kernels/4.7.2-201.fc24.x86_64/Makefile:1461: recipe for target '_module_/tmp/selfgz6064/NVIDIA-Linux-x86_64-352.63/kernel' failed
   make[2]: *** [_module_/tmp/selfgz6064/NVIDIA-Linux-x86_64-352.63/kernel] Error 2
   make[2]: Leaving directory '/usr/src/kernels/4.7.2-201.fc24.x86_64'
   Makefile:150: recipe for target 'sub-make' failed
   make[1]: *** [sub-make] Error 2
   make[1]: Leaving directory '/usr/src/kernels/4.7.2-201.fc24.x86_64'
   NVIDIA: left KBUILD.
   nvidia.ko failed to build!
   nvidia-modules-common.mk:245: recipe for target 'module' failed
   make: *** [module] Error 1
-> Error.
ERROR: Unable to build the NVIDIA kernel module.
ERROR: Installation has failed.  Please see the file '/var/log/nvidia-installer.log' for details.  You may find suggestions on fixing installation problems in the README available on the Linux driver download page at www.nvidia.com.

What else ?

===========================================================================
 Patrick DUPRÉ                                 | | email: [e-mail]
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: [phone]
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================
> Sent: Saturday, September 03, 2016 at 8:05 PM
> From: "geo.inbox.ignored" 
> To: [e-mail]
> Subject: Re: brightness
>
> On 09/03/2016 12:07 PM, Samuel Sieb wrote:
> > On 09/03/2016 02:34 AM, Patrick Dupre wrote:
> > > How can I manage the brightness of my laptop ?
> > >  xbacklight -get  (or -set)
> > > does not work.
> > > A gui interface would be helpful.
> >
> > There should be backlight adjustment keys on your keyboard.  If those 
> > don't work, then file a kernel bug.  In Gnome, if you open the menu in 
> > the top-right corner, there should be a brightness slider under the 
> > volume slider.  Again, if that doesn't work, it's most likely a kernel bug.
>
> ===>
>
> not familiar with 'gnome thinking', but i guess volume slider is a good
> a place as any to include a brightness slider.
>
> as for filing a bug, a 'need to know' is if current version of 'xbacklight'
> works with his video chipset. if laptop is old, fedora may have dropped
> his chipset. if 'new out of box', current drivers may not work.
>
> Patrick needs to run 'lspci|grep vga' to find his chipset and post it to
> see if others with 'xbacklight' working have same chipset.
>
> failing that, joining developers list would get faster reaction than
> filing a bug report.
> > If you open a terminal and look in /sys/class/backlight, each directory 
> > there represents a kernel backlight control interface.  Inside, you can 
> > write a number to "brightness" in the range 0 to "max_brightness" and it 
> > should change.  Be careful writing something very low because you might 
> > not be able to see to turn it back up.
>
> ===>
>
> above is covered in search link i posted. did not mention because if
> Patrick reads thru search, he will find several links on same and in
> more detail.
>
> --
>
> peace out.
>
> CentOS GNU/Linux 6.8
>
> tc,hago.
>
> g
> .
>
> =+=
> Tired of having your microsoft os hacked?
> Change to Linux os, used by microsoft hackers.
> =+=
> in a world with out fences, who needs gates.
> =+=
> --
> users mailing list
> [e-mail]
> To unsubscribe or change subscription options:
> https://lists.fedoraproject.org/admin/lists/[e-mail]
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org

[Samuel Sieb]

On 09/03/2016 12:54 PM, Patrick Dupre wrote:
> 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
> 3D controller: NVIDIA Corporation GM107M [GeForce GTX 960M] (rev a2)
> lsmod
> video                  40960  3 i915,msi_wmi,nouveau

Ugh, it's one of those hybrid systems.  Try looking into PRIME.  It's 
the current method of dealing with these systems using open-source drivers.
> When I boot, I also use:
> nomodeset vga=normal

Do you really need this?  It is probably part of your problem.
> /sys/class/backlight
> is empty
>
> None of the fn key works

That would explain why you have no backlight control.  Try booting 
without the "nomodeset" and see if that makes any difference.  If not, 
then see if you can find an existing bug report for your laptop.  You 
didn't mention which one you have.
> I also try to run:
> NVIDIA-Linux-x86_64-352.63.run

If you really want to use the proprietary NVidia driver, get it from 
rpmfusion.  At least then, it's easier to revert if necessary and it's 
much more likely to work.

[Patrick Dupre]

===========================================================================
 Patrick DUPRÉ                                 | | email: [e-mail]
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: [phone]
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================
> Sent: Saturday, September 03, 2016 at 10:06 PM
> From: "Samuel Sieb" 
> To: "Community support for Fedora users" 
> Subject: Re: brightness
>
> On 09/03/2016 12:54 PM, Patrick Dupre wrote:
> > 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
> > 3D controller: NVIDIA Corporation GM107M [GeForce GTX 960M] (rev a2)
> > lsmod
> > video                  40960  3 i915,msi_wmi,nouveau
>
> Ugh, it's one of those hybrid systems.  Try looking into PRIME.  It's 
> the current method of dealing with these systems using open-source drivers.
> > When I boot, I also use:
> > nomodeset vga=normal

I can run without vga=normal, but if I run without nomodeset, the graphics
never starts and I have to restart the machine.
But even without vga=normal, I get the same behavior.
> Do you really need this?  It is probably part of your problem.
> > /sys/class/backlight
> > is empty
> >
> > None of the fn key works
>
> That would explain why you have no backlight control.  Try booting 
> without the "nomodeset" and see if that makes any difference.  If not, 
> then see if you can find an existing bug report for your laptop.  You 
> didn't mention which one you have.
> > I also try to run:
> > NVIDIA-Linux-x86_64-352.63.run
>
> If you really want to use the proprietary NVidia driver, get it from 
> rpmfusion.  At least then, it's easier to revert if necessary and it's 
> much more likely to work.

Do you mean:
xorg-x11-drv-nvidia
?

The machine is a MSI GE62-6GD
> users mailing list
> [e-mail]
> To unsubscribe or change subscription options:
> https://lists.fedoraproject.org/admin/lists/[e-mail]
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org

[Samuel Sieb]

On 09/03/2016 01:46 PM, Patrick Dupre wrote:
> > Sent: Saturday, September 03, 2016 at 10:06 PM
> > From: "Samuel Sieb"
>
> I can run without vga=normal, but if I run without nomodeset, the graphics
> never starts and I have to restart the machine.
> But even without vga=normal, I get the same behavior.

Sorry, I can't help you figure out what's wrong there.  I completely 
avoid any computers containing NVidia graphics...  If you don't have any 
need for the NVidia part, you might be able to disable it in the BIOS. 
I don't know why the Intel part isn't working for modesetting.
> > If you really want to use the proprietary NVidia driver, get it from
> > rpmfusion.  At least then, it's easier to revert if necessary and it's
> > much more likely to work.
>
> Do you mean:
> xorg-x11-drv-nvidia
> ?

That would be included. You want one of the akmod-nvidia* packages. 
Since it's a recent chipset, it would most likely be the "akmod-nvida" 
package.  (Don't forget to install "kernel-devel" as well.)  The problem 
is that you will need to clean any mess left behind by the NVidia 
installer you tried to run before you install the package.

[Patrick Dupre]

> On 09/03/2016 01:46 PM, Patrick Dupre wrote:
> > > Sent: Saturday, September 03, 2016 at 10:06 PM
> > > From: "Samuel Sieb"
> >
> > I can run without vga=normal, but if I run without nomodeset, the graphics
> > never starts and I have to restart the machine.
> > But even without vga=normal, I get the same behavior.
>
> Sorry, I can't help you figure out what's wrong there.  I completely 
> avoid any computers containing NVidia graphics...  If you don't have any 
> need for the NVidia part, you might be able to disable it in the BIOS. 
> I don't know why the Intel part isn't working for modesetting.
> > > If you really want to use the proprietary NVidia driver, get it from
> > > rpmfusion.  At least then, it's easier to revert if necessary and it's
> > > much more likely to work.
> >
> > Do you mean:
> > xorg-x11-drv-nvidia
> > ?
>
> That would be included. You want one of the akmod-nvidia* packages. 
> Since it's a recent chipset, it would most likely be the "akmod-nvida" 
> package.  (Don't forget to install "kernel-devel" as well.)

Installing:
 akmod-nvidia                        x86_64         1:367.35-1.fc24           rpmfusion-nonfree-updates          70 k
 akmods                              noarch         0.5.4-3.fc24              rpmfusion-free-updates             25 k
 kmodtool                            noarch         1-23.fc24                 rpmfusion-free                     17 k
 xorg-x11-drv-nvidia                 x86_64         1:367.35-3.fc24           rpmfusion-nonfree-updates         3.9 M
 xorg-x11-drv-nvidia-kmodsrc         x86_64         1:367.35-3.fc24           rpmfusion-nonfree-updates         5.7 M
 xorg-x11-drv-nvidia-libs            x86_64         1:367.35-3.fc24           rpmfusion-nonfree-updates          17 M

The problem
> is that you will need to clean any mess left behind by the NVidia 
> installer you tried to run before you install the package.

It looks like that every things is in /var/log/
-rw-------. 1 root     root               49157 Sep  3 22:39 secure
-rw-r--r--. 1 root     root              292292 Sep  3 22:39 lastlog
-rw-rw-r--. 1 root     utmp               59904 Sep  3 22:38 wtmp
-rw-r--r--. 1 root     pdupre             48621 Sep  3 22:38 Xorg.1.log
-rw-r--r--. 1 root     gdm                49050 Sep  3 22:38 Xorg.0.log
-rw-r--r--. 1 root     root                5910 Sep  3 22:38 firewalld
-rw-r--r--. 1 root     root               14857 Sep  3 22:38 boot.log
-rw-r--r--. 1 root     pdupre             49943 Sep  3 22:34 Xorg.1.log.old
-rw-r--r--. 1 root     gdm                50056 Sep  3 22:34 Xorg.0.log.old
-rw-r--r--. 1 root     root              462588 Sep  3 21:52 nvidia-installer.log
> users mailing list
> [e-mail]
> To unsubscribe or change subscription options:
> https://lists.fedoraproject.org/admin/lists/[e-mail]
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org

[Go Canes]

A recent kernel update broke function keys on my wife's Dell XPS 13.
Reverting to the prior kernel worked-around the issue.  I haven't had a
chance to pursue it any further.

So try an earlier kernel.

On Sat, Sep 3, 2016 at 6:06 PM, Patrick Dupre  wrote:
> > On 09/03/2016 01:46 PM, Patrick Dupre wrote:
> > > > Sent: Saturday, September 03, 2016 at 10:06 PM
> > > > From: "Samuel Sieb"
> > >
> > > I can run without vga=normal, but if I run without nomodeset, the
>
> graphics
> > > never starts and I have to restart the machine.
> > > But even without vga=normal, I get the same behavior.
> >
> > Sorry, I can't help you figure out what's wrong there.  I completely
> > avoid any computers containing NVidia graphics...  If you don't have any
> > need for the NVidia part, you might be able to disable it in the BIOS.
> > I don't know why the Intel part isn't working for modesetting.
> > > > If you really want to use the proprietary NVidia driver, get it from
> > > > rpmfusion.  At least then, it's easier to revert if necessary and it's
> > > > much more likely to work.
> > >
> > > Do you mean:
> > > xorg-x11-drv-nvidia
> > > ?
> >
> > That would be included. You want one of the akmod-nvidia* packages.
> > Since it's a recent chipset, it would most likely be the "akmod-nvida"
> > package.  (Don't forget to install "kernel-devel" as well.)
>
> Installing:
>  akmod-nvidia                        x86_64         1:367.35-1.fc24
>    rpmfusion-nonfree-updates          70 k
>  akmods                              noarch         0.5.4-3.fc24
>     rpmfusion-free-updates             25 k
>  kmodtool                            noarch         1-23.fc24
>    rpmfusion-free                     17 k
>  xorg-x11-drv-nvidia                 x86_64         1:367.35-3.fc24
>    rpmfusion-nonfree-updates         3.9 M
>  xorg-x11-drv-nvidia-kmodsrc         x86_64         1:367.35-3.fc24
>    rpmfusion-nonfree-updates         5.7 M
>  xorg-x11-drv-nvidia-libs            x86_64         1:367.35-3.fc24
>    rpmfusion-nonfree-updates          17 M
>
> The problem
> > is that you will need to clean any mess left behind by the NVidia
> > installer you tried to run before you install the package.
>
> It looks like that every things is in /var/log/
> -rw-------. 1 root     root               49157 Sep  3 22:39 secure
> -rw-r--r--. 1 root     root              292292 Sep  3 22:39 lastlog
> -rw-rw-r--. 1 root     utmp               59904 Sep  3 22:38 wtmp
> -rw-r--r--. 1 root     pdupre             48621 Sep  3 22:38 Xorg.1.log
> -rw-r--r--. 1 root     gdm                49050 Sep  3 22:38 Xorg.0.log
> -rw-r--r--. 1 root     root                5910 Sep  3 22:38 firewalld
> -rw-r--r--. 1 root     root               14857 Sep  3 22:38 boot.log
> -rw-r--r--. 1 root     pdupre             49943 Sep  3 22:34 Xorg.1.log.old
> -rw-r--r--. 1 root     gdm                50056 Sep  3 22:34 Xorg.0.log.old
> -rw-r--r--. 1 root     root              462588 Sep  3 21:52
> nvidia-installer.log
> > users mailing list
> > [e-mail]
> > To unsubscribe or change subscription options:
> > https://lists.fedoraproject.org/admin/lists/users@lists.
>
> fedoraproject.org
> > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> > Have a question? Ask away: http://ask.fedoraproject.org
>
> --
> users mailing list
> [e-mail]
> To unsubscribe or change subscription options:
> https://lists.fedoraproject.org/admin/lists/[e-mail]
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org

[Garry Williams]

On Thursday, September 8, 2016 3:00:57 PM EDT Go Canes wrote:
> A recent kernel update broke function keys on my wife's Dell XPS 13.

If you mean Fn keys, then see this:

https://bugzilla.redhat.com/show_bug.cgi?id=1374558