Samsung NB30 Netbook - Brightness problem

Discussions about Linux installation and configuration on Samsung laptops
flipouk
Newbie
Newbie
Posts: 1
Joined: 23/04/2010, 9:50

Re: Samsung NB30 Netbook - Brightness problem

Postby flipouk » 23/04/2010, 9:58

Hello,

Many thanks for providing the repository and the scripts! I have installed them now.

I have an NB30 with the following BIOS version:

$ sudo dmidecode | grep JJ
Version: 05JJ.M030.20100218.RHU

Everything works for me except the brightness keys :-( I made sure I have acpi_backlight=vendor in Grub.

I will use the workaround suggested above.

F.

User avatar
voria
Administrator
Administrator
Posts: 1378
Joined: 12/02/2009, 18:08
Location: Italy
Contact:

Re: Samsung NB30 Netbook - Brightness problem

Postby voria » 23/04/2010, 11:13

Have you installed the 'samsung-backlight' package?
Image
Please consider a little donation to keep the 'Linux On My Samsung' project up and running. Thank you!

sano
Newbie
Newbie
Posts: 3
Joined: 30/04/2010, 2:46
Location: UK

Re: Samsung NB30 Netbook - Brightness problem

Postby sano » 30/04/2010, 3:15

Hi all,

I'm also having a difficult time with brightness on NB30. I did install samsung-backlight but that didn't allow me to change the brightness level with Fn+UP/DOWN. I tried adding "acpi_backlight=vendor" in GRUB, didn't help either.

As for the workaround suggested by rogerrushworth, I need some help here. What exactly I am supposed to do? Just create a /usr/bin/setbright file, inserting there what rogerrushworth provided? So far I am getting
File "/usr/bin/setbright", line 9 var.set(int(v))
^
IndentationError: expected an indented block
when trying to run the script.

I am using 2.6.31-20-generic kernel, BIOS version is 05JJ. By the way, does anyone know why I can change the brightness level in GRUB using Fn+UP/DOWN without any problems?

There are also other issues which I would like to discuss, but this one has the top priority, since it's just too bright to worry about other things.

Thanks.


UPDATE: I just tried http://wiki.archlinux.org/index.php/Samsung_N150#Backlight and it works! Furthermore, it allows to easily turn off the screen.

sano
Newbie
Newbie
Posts: 3
Joined: 30/04/2010, 2:46
Location: UK

Re: Samsung NB30 Netbook - Brightness problem

Postby sano » 30/04/2010, 18:55

Hi there,

Just wanted to say that today I installed Ubuntu 10.4 LTS and samsung-backlight now allows me change the brightness level. So now I am slightly happier than usual and it's all thanks to one enthusiast. Thank you voRia :)

User avatar
voria
Administrator
Administrator
Posts: 1378
Joined: 12/02/2009, 18:08
Location: Italy
Contact:

Re: Samsung NB30 Netbook - Brightness problem

Postby voria » 30/04/2010, 19:38

Great news, thanks for reporting. :)
Hopefully everything will work good now even for NB30 owners. ;)
Image
Please consider a little donation to keep the 'Linux On My Samsung' project up and running. Thank you!

rogerrushworth
Newbie
Newbie
Posts: 9
Joined: 18/03/2010, 16:54
Location: Edinburgh

Re: Samsung NB30 Netbook - Brightness problem

Postby rogerrushworth » 03/05/2010, 13:13

Hi, sorry, the Python code is dependent on indentation which is removed by posting the reply.

Try the following but replace all the '>' characters at the start of the line with TAB

"""
#!/usr/bin/env python

from Tkinter import *
import os,sys

master=Tk()
var = IntVar()
def set(v):
>var.set(int(v))
>os.system("setpci -s 00:02.0 F4.B=%x"%(int(v)*16))
def full():
>set(15)
def low():
>set(1)
if __name__=="__main__":
>f=Button(master,text="Full",command=full)
>f.pack(anchor=CENTER)
>var.set(15)
>w=Scale(master,from_=15,to=1,command=set,variable=var)
>w.pack()
>f=Button(master,text="low",command=low)
>f.pack(anchor=CENTER)
>q=Button(master,text="Quit",command=sys.exit)
>q.pack(anchor=CENTER)
>mainloop()
"""

I also made a prettier one using gtk as follows. I will try posting it between code tags: it looks better in preview...

Code: Select all

#!/usr/bin/env python

from gtk import *
import os,sys
class setb(Window):
   def __init__(self):
      self.win = Window(WINDOW_TOPLEVEL)
      self.win.set_position(WIN_POS_CENTER)
      self.win.set_property("allow-grow",False)
      #self.win.set_property("allow-shrink",False)
      self.b = VBox(False,0)
      self.l = Label("Adjust Slider to Level")
      self.l.show()
      self.b.add(self.l)
      self.win.set_border_width(8)
      self.b.set_border_width(8)
      self.win.add(self.b)
      self.adj = Adjustment(14.9,1,15,1)
      self.adj.connect("value_changed",self.set)
      self.w=HScale(self.adj)
      self.b.pack_start(self.w)
      self.f=Button("Full 15")
      self.f.connect("clicked",self.full)
      self.b.pack_start(self.f, False, False, 10)
      self.f.show()
      self.lo=Button("Low 1")
      self.lo.connect("clicked",self.low)
      self.b.pack_start(self.lo, False, False, 10)
      self.lo.show()
      self.q=Button("Quit")
      self.q.connect("clicked",self.quit)
      self.b.pack_start(self.q, False, False, 0)
      self.b.show()
      self.q.show()
      self.w.show()
      self.win.show()
      self.w.set_value(15)
      self.w.emit("value_changed")

   def set(self, adj):
      v = adj.value
      os.system("setpci -s 00:02.0 F4.B=%x"%(int(v)*16))

   def full(self, e):
      self.w.set_value(15)

   def low(self, e):
      self.w.set_value(1)

   def quit(self, e):
      sys.exit(0)

if __name__=="__main__":
   app = setb()
   main()


but I will try 10.04 LTS via Update Manager and hope this resolves the problem.

rogerrushworth
Newbie
Newbie
Posts: 9
Joined: 18/03/2010, 16:54
Location: Edinburgh

Re: Samsung NB30 Netbook - Brightness problem

Postby rogerrushworth » 03/05/2010, 16:48

Sadly not. After upgrade to 10.04 LTS FN-UP and FN-down still do not affect the Brightness. The command setbright still works ok, though.

User avatar
voria
Administrator
Administrator
Posts: 1378
Joined: 12/02/2009, 18:08
Location: Italy
Contact:

Re: Samsung NB30 Netbook - Brightness problem

Postby voria » 03/05/2010, 19:40

rogerrushworth wrote:Sadly not. After upgrade to 10.04 LTS FN-UP and FN-down still do not affect the Brightness. The command setbright still works ok, though.
If you installed 'samsung-backlight' package in karmic and then upgraded to lucid, you have to purge the old version and reinstall the new one manually, or else it will not work. According to a previous report, the new 'samsung-backlight' should fix the backlight problem on NB30, I suggest to give it a try:

Code: Select all

sudo apt-get purge samsung-backlight-* && sudo apt-get install samsung-backlight
Image
Please consider a little donation to keep the 'Linux On My Samsung' project up and running. Thank you!

dodo
Newbie
Newbie
Posts: 5
Joined: 11/03/2010, 19:45

Re: Samsung NB30 Netbook - Brightness problem

Postby dodo » 03/05/2010, 20:42

Hi! I've updated my NB30 to Lucid, purged the old samsung-* packages and installed the new samsung-backlight and samsung-tools. They seem to work (backlight level changes during startup) but the hotkeys are being swallowed by the kernel. If I press Fn+Up/Down, I get this in the kernel log:

Code: Select all

[  718.623354] atkbd.c: Unknown key pressed (translated set 2, code 0x88 on isa0060/serio0).
[  718.623370] atkbd.c: Use 'setkeycodes e008 <keycode>' to make it known.
[  718.856107] atkbd.c: Unknown key pressed (translated set 2, code 0x89 on isa0060/serio0).
[  718.856119] atkbd.c: Use 'setkeycodes e009 <keycode>' to make it known.
But nothing happens. Same with Fn+F2, F4, F5, etc. Fn+F3 weirdly toggles the webcam instead of typing an euro symbol. :O

Should I have to start messing around with the setkeycodes et al? Can you please fix this one? If you need more information please let me know. Thanks in advance! :)

dodo
Newbie
Newbie
Posts: 5
Joined: 11/03/2010, 19:45

Re: Samsung NB30 Netbook - Brightness problem

Postby dodo » 03/05/2010, 21:39

Ooops, I forgot: my BIOS version is 03JJ.M027.20100111.RHU. Don't know if it matters.

User avatar
voria
Administrator
Administrator
Posts: 1378
Joined: 12/02/2009, 18:08
Location: Italy
Contact:

Re: Samsung NB30 Netbook - Brightness problem

Postby voria » 03/05/2010, 21:43

The latest 'udev' packages on the repository fix the FN keys on NB30 too.
Have you done a full system upgrade after you enabled the repository?

Code: Select all

sudo apt-get update && sudo apt-get upgrade
After that, restart the system and FN keys should start to work.
Image
Please consider a little donation to keep the 'Linux On My Samsung' project up and running. Thank you!

dodo
Newbie
Newbie
Posts: 5
Joined: 11/03/2010, 19:45

Re: Samsung NB30 Netbook - Brightness problem

Postby dodo » 03/05/2010, 22:16

****! I knew I forgot something!

Everything seems fixed now. Thank you very much. :)

rogerrushworth
Newbie
Newbie
Posts: 9
Joined: 18/03/2010, 16:54
Location: Edinburgh

Re: Samsung NB30 Netbook - Brightness problem

Postby rogerrushworth » 04/05/2010, 10:52

After
sudo apt-add-repository ppa:voria/ppa
sudo apt-get update
sudo apt-get upgrade
sudo apt-get purge samsung-backlight-*
sudo apt-get install samsung-backlight
sudo reboot

Using kernel 2.6.31-20-generic, the FN-UP and FN-DOWN keys adjust the brightness as expected.
Thanks very much!

Unfortunately, I also have an option, the default, for kernel 2.6.32-21-generic and using this, the brightness keys do not work and also wireless is inoperable. Is this a known problem?

User avatar
voria
Administrator
Administrator
Posts: 1378
Joined: 12/02/2009, 18:08
Location: Italy
Contact:

Re: Samsung NB30 Netbook - Brightness problem

Postby voria » 04/05/2010, 11:22

The new 'samsung-backlight' package automatically rebuild itself when a new kernel is installed.
Since the 2.6.32-21 kernel was already installed before to install 'samsung-backlight', the latter did not rebuilt itself automatically.

Reinstalling the 2.6.32-21 kernel should fix the problem:

Code: Select all

sudo apt-get install --reinstall linux-image-2.6.32-21-generic
Image
Please consider a little donation to keep the 'Linux On My Samsung' project up and running. Thank you!

apox
Newbie
Newbie
Posts: 1
Joined: 26/06/2010, 6:23

Re: Samsung NB30 Netbook - Brightness problem

Postby apox » 26/06/2010, 6:36

Just got my NB30 with lucid, most of my Fn keys do not work but with the help of your guide "HOWTO: Use the repository on K/Ubuntu 9.10 and 10.04" I was able to get everything working after a few minutes.
Thank you voRia for your work.


Return to “Linux On My Samsung”

Who is online

Users browsing this forum: No registered users and 3 guests