Monitor-brightness went nuts!

[Citta]

Hi everyone,

Monitor-brightness is not(worked just once!) via keyboard Fn-F5orF6 in-or decreasable-what might be the problem? The monitor is always on maximum brightness!
Or is there another way to adjust the brightness, did not find one!

Thanks for your help!

[Toz]

It would be helpful if you provided some more information, specifically:

1. The make and model of your computer.
   
2. The version of lubuntu that you are using.
   
3. Your current kernel boot parameters:
   

   cat /proc/cmdline

4. Information about your video card(s):
   

   lspci -k | grep -iA2 VGA

5. A listing of your backlight interfaces and the values of the associated brightness settings:
   

   for i in /sys/class/backlight/*; do echo $i; cat $i/brightness; cat $i/actual_brightness; cat $i/max_brightness; done

6. Your dmesg log file:
   

   pastebinit /var/log/dmesg

   ...and post back the link that is generated.
   
7. Your Xorg log file:
   

   pastebinit /var/log/Xorg.0.log

   ...and post back the link that is generated.

*If you get a message stating that pastebinit is not installed, you can install it by searching for it in the Software Centre or by running the following command:

sudo apt-get install pastebinit

[Citta]

1. Vaionetbook VPCW21C7E
2. Lubuntu 13.10 Desktop
3. I assume the code you provided I have to write in a terminal(which one?-there are three terminals existing) then writing this down, enter, and paste the result here?
I ask this, because I am unexperienced!
Thanks!

[Toz]

3. I assume the code you provided I have to write in a terminal(which one?-there are three terminals existing) then writing this down, enter, and paste the result here?

Yes. Any terminal will do. Paste the results back here.

[Citta]

Booting the OS from flashdrive resulted in the same problem-just a check.

I pasted the outputs of the terminal on Abiword, this file-type is not mentioned eligible as attachment, nevertheless I will try it. If it does not work-what to do?
Pastebin seems, according to the terminal-output, to exist. When searching via Softwarecenter-Installed Software, Pastebin does not exist.

Should I install it, based on mentioned result?

PS: Indeed, attaching the Abi-file did not work-invalid!

[Toz]

For steps 3 to 5, just copy the results from the terminal and past back here as a reply.

For steps 6 & 7, first install pastebinit by running this command in a terminal (its a small useful program):

sudo apt-get install pastebinit

...enter your password when prompted, then run the above commands and post back the links that the program generates.

[Citta]

Now I use the netbook for the reply, with the PC I could not open the Abiworddoc..Here are the results:

jane@jane:~$ cat/proc/cmdline
bash: cat/proc/cmdline: No such file or directory

jane@jane:~$ lspci -k | grep -iA2 VGA
00:02.0 VGA compatible controller: Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller
    Subsystem: Sony Corporation Device 9066
    Kernel driver in use: i915

jane@jane:~$  for i in /sys/class/backlight/*; do echo $i; cat $i/brightness; cat  $i/actual_brightness; cat $i/max_brightness; done
/sys/class/backlight/acpi_video0
8
8
8
/sys/class/backlight/intel_backlight
26010
26010
26015

jane@jane:~$ pastebinit /var/log/dmesg
The program 'pastebinit' can be found in the following packages:
 * pastebinit
 * pastebinit
Try: sudo apt-get install <selected package>

jane@jane:~$ pastebinit /var/log/Xorg.0.log
The program 'pastebinit' can be found in the following packages:
 * pastebinit
 * pastebinit
Try: sudo apt-get install <selected package>


jane@jane:~$ sudo apt-get install <selected package>
bash: syntax error near unexpected token `newline'

The steps 5 & 6:  jane@jane:~$ sudo apt-get pastebinit
[sudo] password for jane: 
E: Invalid operation pastebinit

The Softwarecenter offered at first a Nautilus pastebinit, the second trial yielded no results.

Thanks a lot for your assistance!

[Toz]

From a terminal window:

sudo -i leafpad /usr/share/X11/xorg.conf.d/20-intel.conf

...enter your password when prompted, then copy/paste this content in:

Section "Device"
        Identifier  "card0"
        Driver      "intel"
        Option      "Backlight"    "intel_backlight"
        BusID       "PCI:0:2:0"
EndSection

Save the file then reboot.

*Make sure you enter the commands in properly, including all spacing. Better to copy and paste the commands.

*After you reboot, check the brightness and please post back the contents of the file you created (/usr/share/X11/xorg.conf.d/20-intel.conf) to confirm accuracy.

[Citta]

Here what I did: Opened terminal, pasted there the first code, a window popped up, second code pasted, clicked "save", reboot.
Brightnes uncontrollable.
Pasted /usr/....in the terminal:

jane@jane:~$ /usr/share/X11/xorg.conf.d/20-intel.conf
bash: /usr/share/X11/xorg.conf.d/20-intel.conf: Permission denied

[Toz]

Can you post back the contents of /usr/share/X11/xorg.conf.d/20-intel.conf?

Can you also post back a couple of log files like this:

pastebinit /var/log/dmesg

...and post back the link that is generated.

pastebinit /var/log/Xorg.0.log

...and post back the link that is generated.