Page 6 of 6
Re: Backlight doesn't work with latest Maverick kernel
Posted: 19 Mar 2011, 17:12
by jazz
dundee wrote:Hello,
I'm owner of Samsung NP-N150-JP01PL.
In my case after installing samsung-backlight and samsung-tools I use following sollution with success:
1. edit /etc/default/grub
2. change line from
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
3. update grub
4. create file /etc/modprobe.d/samsung-backlight.conf
Code: Select all
sudo nano /etc/modprobe.d/samsung-backlight.conf
5. insert into this file following line and save it
Code: Select all
options samsung_backlight use_sabi=0 force=1
6. reboot the system
This solution was checked under GNOME and KDE and in both it works perfectly.
Naturally you can use your favourite text editor instead of nano.
I could only set the brightness to the min or max with the backlight keys on my NF-310, I tried everything on this thread, with no success, but with your solution it finally works! Thanks!
Re: Backlight doesn't work with latest Maverick kernel
Posted: 23 Mar 2011, 09:12
by Woulouf
jazz wrote:dundee wrote:Hello,
I'm owner of Samsung NP-N150-JP01PL.
In my case after installing samsung-backlight and samsung-tools I use following sollution with success:
1. edit /etc/default/grub
2. change line from
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
3. update grub
4. create file /etc/modprobe.d/samsung-backlight.conf
Code: Select all
sudo nano /etc/modprobe.d/samsung-backlight.conf
5. insert into this file following line and save it
Code: Select all
options samsung_backlight use_sabi=0 force=1
6. reboot the system
This solution was checked under GNOME and KDE and in both it works perfectly.
Naturally you can use your favourite text editor instead of nano.
I could only set the brightness to the min or max with the backlight keys on my NF-310, I tried everything on this thread, with no success, but with your solution it finally works! Thanks!
And you don't encounter issues like flickering screen with brightness level going up and down quickly ?
Thanks
Re: Backlight doesn't work with latest Maverick kernel
Posted: 26 Mar 2011, 14:56
by jazz
Woulouf wrote:
And you don't encounter issues like flickering screen with brightness level going up and down quickly ?
Not anymore! Now the screen dims correctly after some time of inactivity.
Re: Backlight doesn't work with latest Maverick kernel
Posted: 26 Mar 2011, 20:23
by minj
dundee wrote:Hello,
I'm owner of Samsung NP-N150-JP01PL.
In my case after installing samsung-backlight and samsung-tools I use following sollution with success:
1. edit /etc/default/grub
2. change line from
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
3. update grub
4. create file /etc/modprobe.d/samsung-backlight.conf
Code: Select all
sudo nano /etc/modprobe.d/samsung-backlight.conf
5. insert into this file following line and save it
Code: Select all
options samsung_backlight use_sabi=0 force=1
6. reboot the system
This solution was checked under GNOME and KDE and in both it works perfectly.
Naturally you can use your favourite text editor instead of nano.
Confirmed on NF310.
Although after some fiddling around with power state, lid and suspend/hibernate cycles I managed to make plugging cable out cause 'closed lid' action, which is very annoying if it is set to suspend. After a proper reboot the glitch didn't repeat itself though. I don't really want to reproduce it
Re: Backlight doesn't work with latest Maverick kernel
Posted: 01 Apr 2011, 21:41
by Sam66
Thank you everybody !
I have tried to add the command acpi_backlight=vendor in my Grub and it's all right, I have recovered my Fn brightness buttons in the 2.6.35-28 kernel.
Great !
Re: Backlight doesn't work with latest Maverick kernel
Posted: 04 Apr 2011, 02:04
by terry
Passing the kernel parameter acpi_backlight=vendor does the trick on N-148.
However, I did see weird issues running on battery, after idling for a few seconds system tries to adjust the brightness itself back and forth flickering for 20-30 times, unchecking the dim display when idle fixed it.
Good to see it's been such a long post, in fact I haven't used my netbook for a while...
Re: Backlight doesn't work with latest Maverick kernel
Posted: 15 Apr 2011, 09:24
by pawel115
I am total newbie to Ubuntu i did all above instructions and nothing the only change that i see is that when i press Fn + up/down brightness level doesnt show like it did before i have samsung n145
Re: Backlight doesn't work with latest Maverick kernel
Posted: 29 Jun 2011, 15:49
by robbie66
I have posted a new thread because I find all this tech stuff really hard to follow, is there a Dummies guide??!!
http://www.voria.org/forum/viewtopic.ph ... 220+screen
Re: Backlight doesn't work with latest Maverick kernel
Posted: 12 Jul 2013, 21:45
by lfc84
this works on samsung n210plus
Linux N150P-N210P-N220P 3.2.0-49-generic-pae #75-Ubuntu SMP Tue Jun 18 18:00:21 UTC 2013 i686 i686 i386 GNU/Linux