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#1 2011-08-15 09:02:38

Shark
Member
From: /dev/zero
Registered: 2011-02-28
Posts: 686

[SOLVED]Brightness and handler.sh

Hi

I want my laptop when on battery to decrease brigtness with xbacklight command in handler.sh and when on AC to increase. I have edited handler.sh:

battery)
        case "$2" in
            BAT0)
                case "$4" in
                    00000000)   #echo "offline" >/dev/tty5
		    DISPLAY=:0.0 su -c - shark /usr/bin/xbacklight -dec 80 		    		    		    
                    ;;
                    00000001)   #echo "online"  >/dev/tty5
                    DISPLAY=:0.0 su -c - shark /usr/bin/xbacklight -inc 80
 	      ;;

but it is not working. Wham am i missing here?

Last edited by Shark (2011-08-16 19:44:58)

If you have built castles in the air, your work need not be lost; that is where they should be. Now put foundations under them.
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#2 2011-08-15 11:24:59

Shark
Member
From: /dev/zero
Registered: 2011-02-28
Posts: 686

Re: [SOLVED]Brightness and handler.sh

Actually, through /etc/laptop-mode/conf.d/lcd-brigtness.conf i got the desired result. But i really don't know why upper command don't work. If i change xbacklight command with vlc command then vlc start when i unlug the cable, for example.

If you have built castles in the air, your work need not be lost; that is where they should be. Now put foundations under them.
Henry David Thoreau

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#3 2011-08-15 12:58:28

lula
Member
Registered: 2009-07-16
Posts: 71

Re: [SOLVED]Brightness and handler.sh

Have you tried 

DISPLAY=:0.0 su -c - shark "/usr/bin/xbacklight -inc 80"

instead of 

DISPLAY=:0.0 su -c - shark /usr/bin/xbacklight -inc 80

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#4 2011-08-15 19:54:49

Shark
Member
From: /dev/zero
Registered: 2011-02-28
Posts: 686

Re: [SOLVED]Brightness and handler.sh

lula wrote:

Have you tried 

DISPLAY=:0.0 su -c - shark "/usr/bin/xbacklight -inc 80"

instead of 

DISPLAY=:0.0 su -c - shark /usr/bin/xbacklight -inc 80

Hi

I did tried it but didn't work. I have even tried it with ''

If you have built castles in the air, your work need not be lost; that is where they should be. Now put foundations under them.
Henry David Thoreau

Registered Linux User: #559057

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#5 2011-08-16 08:09:07

lula
Member
Registered: 2009-07-16
Posts: 71

Re: [SOLVED]Brightness and handler.sh

You're right, i only tried it in a shell, where it definitely needs the quotes, otherwise su complains about illegal options. When i try it in handler.sh, it doesn't work on my machine, but my battery is called BAT1 in /proc/acpi/battery and not BAT0 as in handler.sh. I'll have a closer look this evening.

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#6 2011-08-16 17:31:42

lula
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Registered: 2009-07-16
Posts: 71

Re: [SOLVED]Brightness and handler.sh

Looking at the values present in handler.sh, i think it's better to switch brightness depending on the presence of the AC-Adapter. The working version for my machine is:

ac_adapter)                                                                                              
  case "$2" in                                                                                         
      AC|ACAD|ADP0)                                                                                    
          case "$4" in                                                                                 
              00000000)                                                                                
                  echo -n $minspeed >$setspeed                                                         
                  #/etc/laptop-mode/laptop-mode start                                                  
                  DISPLAY=:0.0 su -c - youruser "/usr/bin/xbacklight -dec 80"                            
              ;;                                                                                       
              00000001)                                                                                
                  echo -n $maxspeed >$setspeed                                                         
                  #/etc/laptop-mode/laptop-mode stop                                                   
                  DISPLAY=:0.0 su -c - youruser "/usr/bin/xbacklight -inc 80"                            
              ;;                                                                                       
          esac                                                                                         
          ;;                                                                                           
      *)  logger "ACPI action undefined: $2" ;;                                                        
  esac                                                                                                 
  ;;

To get the values for your machine you can e.g. insert a 

echo "$@" >>/tmp/acpi.txt

before the case "$1" in handler.sh and then tail /tmp/acpi.txt and plug in/out battery and ac-plug. Remember not to un-plug  both wink

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#7 2011-08-16 17:59:13

Shark
Member
From: /dev/zero
Registered: 2011-02-28
Posts: 686

Re: [SOLVED]Brightness and handler.sh

Hi
Thank you for your help but it is not working. Output of /tmp/acpi.txt:

c_adapter AC0 00000080 00000001
hotkey ATKD 00000058 00000002
processor CPU0 00000081 00000000
processor CPU1 00000081 00000000
battery BAT0 00000080 00000001
battery BAT0 00000081 00000001
ac_adapter AC0 00000080 00000001
ac_adapter AC0 00000080 00000000
hotkey ATKD 00000057 00000003
processor CPU0 00000081 00000000
processor CPU1 00000081 00000000
battery BAT0 00000080 00000001
ac_adapter AC0 00000080 00000001
hotkey ATKD 00000058 00000003
processor CPU0 00000081 00000000
processor CPU1 00000081 00000000
battery BAT0 00000080 00000001
battery BAT0 00000081 00000001
ac_adapter AC0 00000080 00000001

I have changed AC to AC0 as you can see that output is AC0. But the problem is somewhere else, i think, because if i put vlc command instead of xbacklight command in handler.sh everything works fine. Actually, this do just fine in handler.sh:

echo 1 > /sys/class/backlight/asus_laptop/brightness

Thank you for help anyway.

If you have built castles in the air, your work need not be lost; that is where they should be. Now put foundations under them.
Henry David Thoreau

Registered Linux User: #559057

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#8 2011-08-16 18:17:36

lula
Member
Registered: 2009-07-16
Posts: 71

Re: [SOLVED]Brightness and handler.sh

Did you use the quotes in the statement? Does it work if you open a root-shell and enter it there?

DISPLAY=:0.0 su -c - shark "/usr/bin/xbacklight -dec 80"
DISPLAY=:0.0 su -c - shark "/usr/bin/xbacklight -inc 80"

edit: 2x the same statement wasn't intended

Last edited by lula (2011-08-16 18:20:37)

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#9 2011-08-16 18:35:36

Shark
Member
From: /dev/zero
Registered: 2011-02-28
Posts: 686

Re: [SOLVED]Brightness and handler.sh

In root with quoates:

No outputs have backlight property

Without:

su: invalid option -- 'd'
Try `su --help' for more information.

If you have built castles in the air, your work need not be lost; that is where they should be. Now put foundations under them.
Henry David Thoreau

Registered Linux User: #559057

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#10 2011-08-16 18:56:42

lula
Member
Registered: 2009-07-16
Posts: 71

Re: [SOLVED]Brightness and handler.sh

It seems that xbacklight does not work properly on your hardware, i think you have to find the max_brightness value for your machine (probably 7, try it out with echoeing bigger values ) as you did in:

Shark wrote:
echo 1 > /sys/class/backlight/asus_laptop/brightness

Thank you for help anyway.

and use the echo-statements in handler.sh.

Do yourself a favor and don't copy any code from anywhere before trying if it really works. The xbacklight thing would have been a simple

xbacklight -set 100
xbacklight -set 10
xbacklight -set 100

as your user to find out that it doesn't work.

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#11 2011-08-16 19:04:49

Shark
Member
From: /dev/zero
Registered: 2011-02-28
Posts: 686

Re: [SOLVED]Brightness and handler.sh

That is really strange. I know that yesterday xbacklight worked if i would run it as a user (in root shell i haven't tried yesterday). I have to messed up something. Maybe because i append to kernel line:

acpi_osi=Linux 
acpi_backlight=vendor

Now i do echo thing instead xbacklight and i am happy smile

Last edited by Shark (2011-08-16 19:10:48)

If you have built castles in the air, your work need not be lost; that is where they should be. Now put foundations under them.
Henry David Thoreau

Registered Linux User: #559057

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#12 2011-08-16 19:09:08

Shark
Member
From: /dev/zero
Registered: 2011-02-28
Posts: 686

Re: [SOLVED]Brightness and handler.sh

Ohh, and thanks for your help.

If you have built castles in the air, your work need not be lost; that is where they should be. Now put foundations under them.
Henry David Thoreau

Registered Linux User: #559057

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#13 2011-08-16 19:27:04

lula
Member
Registered: 2009-07-16
Posts: 71

Re: [SOLVED]Brightness and handler.sh

Shark wrote:

Maybe because i append to kernel line:

acpi_osi=Linux 
acpi_backlight=vendor
lula wrote:

Do yourself a favor ...

and change only one thing at once or make sure that your programs/scrips work as before. Things can get really complicated if you change too many things simultaneously. You might try the xbacklight version, if you change back the boot option.

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#14 2011-08-16 19:44:40

Shark
Member
From: /dev/zero
Registered: 2011-02-28
Posts: 686

Re: [SOLVED]Brightness and handler.sh

Heh, now that i have removed those lines everything works and xbacklight works perfectly in handler.sh:)
Sorry for troubling you and wasting your time.

If you have built castles in the air, your work need not be lost; that is where they should be. Now put foundations under them.
Henry David Thoreau

Registered Linux User: #559057

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#15 2011-08-16 20:01:03

lula
Member
Registered: 2009-07-16
Posts: 71

Re: [SOLVED]Brightness and handler.sh

Shark wrote:

Sorry for troubling you and wasting your time.

Neither trouble nor waste of time, learned something about su, my hardware ... and we could solve your problem.

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