NP535U3C, xUbuntu 12.10 and backlight/brightness

[San]

Hi there!

I've been looking for informations for long, long time how to fix

1. backlight controll (brigh)
2. backlight on after sleep
3. wifi on after sleep

I installed two Ubuntus - first it was Kubuntu 12.10 (luckily i did not brick my PC!).
There was nothing working. After update to 3.5.0-26-generic kernel (or some update with apt), my backlight after suspend became usable! but after some time it made some problems with audio, so i installed (as multiinstallation)...

xUbuntu 12.10.
and there was nothing working too!
after some research i added acpi_backlight=vendor and found brightness working.

then i installed samsung-laptop and bind to "Win+F4" samsung-laptop -b toggle. and it works. i can turn on and off backlight. it even worked once after sleep, but not anymore (i think i did not change anything at this time...).

as i can not check anything with wifi at the moment i do nothing about, but it looks like jupiter can do some work for us, but.. later.

so i tried almost anything i found (even some ridicculous ideas...)
there was some stuff with rmmod before sleep and modprobe after awake, recover status and so on, so on...

Code: Select all

san@sammie:/sys$ cat /etc/pm/sleep.d/2*

=== 22_samsung-backlight ===

#!/bin/bash

case ${1} in
	resume|thaw)
		dbus-send --system --print-reply=literal --dest='org.voria.SamsungTools.System' '/' org.voria.SamsungTools.System.RestoreDevicesLastStatus
		;;
esac

exit 0#!/bin/bash

case ${1} in
	resume|thaw)
		samsung-tools -b on
		mkdir /home/san/debug
		cat /sys/class/backlight/samsung/bl_power > /home/san/debug/bl_power
		cat /proc/acpi/button/lid/LID/state > /home/san/debug/lid
		#dbus-send --system --print-reply=literal --dest='org.voria.SamsungTools.System' '/' org.voria.SamsungTools.System.RestoreDevicesLastStatus
		;;
esac

exit 0

=== 22_samsung-backlight ===

# !/bin/bash
# 
# This script restores screen backlight on resume from suspend 
# on Samsung NP900X3B/C.
#
case "$1" in
  suspend|hibernate)
    # do nothing
  ;;

  resume|thaw)
    # brightness value is not always accurate.  Set to actual_brightness
    # to restore brightness as it was before suspend.
    #echo `cat  /sys/class/backlight/intel_backlight/actual_brightness` > /sys/class/backlight/intel_backlight/brightness

    # Toggle to activate the screen backlight
#    echo 1 > "/sys/class/backlight/intel_backlight/bl_power"
#    echo 0 > "/sys/class/backlight/intel_backlight/bl_power"

    echo 1 > "/sys/devices/platform/samsung/backlight/samsung/bl_power"
    echo 0 > "/sys/devices/platform/samsung/backlight/samsung/bl_power"
  ;;
  *)
     exit 1
esac
exit 0

yes, i know, it is amd, but:

Code: Select all

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force acpi_os_name=\"Microsoft Windows XP\" intel_idle.max_cstate=0 acpi_osi=Linux acpi_backlight=vendor intel_iommu=off i915.modeset=1 i915.i915_enable_rc6=1 i915.lvds_downclock=1 i915.i915_enable_fbc=1 i915.semaphores=1"

acpi=noirq causes keyboard and mouse to not respond. BUT, theese GRUB modification gives me drop of energy-rate from 18-20W to 9(!)-12W (at the moment). forget it, i was on ac...

interfaces seems to be ok, lid is always opened.
after sleep lid is opened and backlight turned on (states os)
huge delay with AC.

Code: Select all

san@sammie:/sys$ for interface in /sys/class/backlight/*; do echo $interface; cat $interface/max_brightness; cat $interface/actual_brightness; cat $interface/brightness; done
/sys/class/backlight/samsung
8
8
8

cat /sys/module/video/parameters/brightness_switch_enabled
Y

cat /sys/module/video/parameters/brightness_autoswitch_via_bios
N

cat /etc/modprobe.d/blacklist.conf:
(...)
blacklist samsung-backlight
blacklist samsung-laptop

cat /etc/rc.local
(...)
modprobe samsung-laptop
modprobe samsung-backlight
exit 0

and dmesg:
http://paste.ubuntu.com/5661295/

That's all folks!
Thanks in advance!

edit.
and modprobe samsung-backlight does not work

Code: Select all

sudo modprobe samsung-backlight 
[sudo] password for san: 
FATAL: Error inserting samsung_backlight (/lib/modules/3.5.0-26-generic/updates/dkms/samsung-backlight.ko): No such device

[San]

http://wiki.colar.net/ubuntu_12_04_on_s ... nos_laptop

ehci_hcd, xhci_hcd workaround didn't help

[San]

I see this forum a bit dying, but since it was a bit help for me, i will left my info 'for the children'.

I want at least three things to setup:

1. Backlight on after suspend
2. Backlight regulation
3. WiFi after suspend

I'am in about half of the way:

for the 1st one, we need to install ATI drivers from the webside (you may try any other, maybe it will work - post here your info if it does!), so:

SOURCE: http://ubuntuxtreme.com/news/amd-cataly ... rformance/

0. Remove fglrx if you installed any

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sudo apt-get remove --purge fglrx fglrx_* fglrx-amdcccle* fglrx-dev*
sudo rm /etc/X11/xorg.conf

1. Install packages:

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sudo apt-get install build-essential cdbs dh-make dkms
sudo apt-get install execstack dh-modaliases fakeroot libqtgui4

# If you are 64 bit, install these too

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sudo apt-get install ia32-libs ia32-libs-multiarch:i386
sudo apt-get install lib32gcc1 libc6-i386
cd /usr ; sudo ln -svT lib /usr/lib64

2. extract and chmod +x your amd-installer

chmod +x amd-driver-installer-catalyst-13.2-beta3-linux-x86.x86_64.run

3. Create packages and install:

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sudo sh ./amd-driver-installer-catalyst-13.2-beta3-linux-x86.x86_64 --buildpkg Ubuntu/precise
sudo dpkg -i fglrx*.deb #i made precise but i have quantanal xD

4. Reconfigure xorg:

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udo aticonfig --initial -f

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#TODO
#remove 'AMD Testing use only' logo (it is simple, so later...)

And now backlight after suspend DOES work. Woohoo!
But fn of light does not... (even if it was)

Second!

Luckily it is not a driver/kernel issue since (as root: sudo su)

Code: Select all

echo 4 > /sys/class/backlight/samsung/brightness

does change light

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#TODO
#create script to bind to fn+f2/3

http://forums.bodhilinux.com/index.php? ... s-scripts/ will be a good start!

Third!
Have no idea by now. samsung-tools and jupiter does not work...

As a side note
jupiter seems to make something useful, if you want to try:

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sudo add-apt-repository ppa:webupd8team/jupiter 
sudo apt-get update 
sudo apt-get install jupiter

and definetly samsung-tools helps!:

Code: Select all

SAMSUNG-TOOLS
sudo add-apt-repository ppa:voria/ppa
sudo apt-get update && sudo apt-get upgrade
sudo apt-get install samsung-tools

wifi key does not work at all (no xinput)
fan works like a charm
audio keys are ok
touchpad lock works
screen switch - not checked
bright - todo
f1 - have no idea what to hell it is, and it definetly won't work.

Regards!

[San]

1. Acchieved!

Edit the ati signature file:

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sudo nano /etc/ati/signature

and just replace the "UNSIGNED" line with the following code

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9777c589791007f4aeef06c922ad54a2:ae59f5b9572136d99fdd36f0109d358fa643f2bd4a2644d9efbb4fe91a9f6590a145:f612f0b01f2565cd9bd834f8119b309bae11a1ed4a2661c49fdf3fad11986cc4f641f1ba1f2265909a8e34ff1699309bf211a7eb4d7662cd9f8e3faf14986d92f646f1bc

it was simplier than i ever thought!

Source: http://askubuntu.com/a/216730

[San]

2. Achieved!

i do not know how...
i connected hdmi output, rebooted and started to mess around with those scripts.

i made

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sudo chmod go+w /sys/class/backlight/acpi_video0/backlight

and it works now!

[San]

I know!

I removed whole GRUB kernel parameters including acpi_brightness=vendor.

And it does work including even wireless.

[berlinomat]

Did the sleep mode work without any tricks?

My NP535U3C shows a black screen after sleep...

[San]

It sometimes hang and gets hot.

Anyway on (?)ubuntu 13.10 it stopped to work (since there are no samsung-tools).
We have to wait...