If you own a Samsung R510 the most important feature that does not work in Fedora 14 are the brightness buttons. Ubuntu users are fortunate to have a repository that enables Fn functionality, please see
https://launchpad.net/~voria/+archive/ppaI will be using files provided by this repository to enable brightness control in Fedora 14 on my Samsung R510.
Please make sure your Fedora system is fully up to date before proceeding. If you are not sure open a terminal and run the following command,
su -c yum -y update
If advised to reboot, please do.
Are you ready?Open a terminal and type the following,
su -c yum install kernel-devel gcc
This will download some required tools. Next, edit the 95-keyboard-force-release.rules file.
su -c nano /lib/udev/rules.d/95-keyboard-force-release.rules
Look for the following line
ENV{DMI_VENDOR}=="[sS][aA][mM][sS][uU][nN][gG]*", ATTR{[dmi/id]product_name}=="*E252*|*N120*|*N128*|*N130*|*N140*|*N148/N208*|*N150*|*N150/N210/N220*|*N220*|*N308*|*N310*|*N510*|*NB30*|*NC10/N110*|*ND10*|*Q210/P210*|*R410P*|*R425/R525*|*R428/P428*|*R460*|*R463*|*R468/R418*|*R480/R431/R481*|*R509*|*R518*|*R519/R719*|*R520/R522/R620*|*R528/R728*|*R530/R730*|*R530/R730/P590*|*R560*|*R580*|*R580/R590*|*R59/R60/R61*|*R59P/R60P/R61P*|*R710*|*R720*|*R780/R778*|*SR58P*|*SR700*|*SR70S/SR71S*|*SX22S*|*X118*|*X120*|*X460*", RUN+="keyboard-force-release.sh $devpath samsung-other"
Add
R510/P510 as highlighted
ENV{DMI_VENDOR}=="[sS][aA][mM][sS][uU][nN][gG]*", ATTR{[dmi/id]product_name}=="*R510/P510*|*E252*|*N120*|*N128*|*N130*|*N140*|*N148/N208*|*N150*|*N150/N210/N220*|*N220*|*N308*|*N310*|*N510*|*NB30*|*NC10/N110*|*ND10*|*Q210/P210*|*R410P*|*R425/R525*|*R428/P428*|*R460*|*R463*|*R468/R418*|*R480/R431/R481*|*R509*|*R518*|*R519/R719*|*R520/R522/R620*|*R528/R728*|*R530/R730*|*R530/R730/P590*|*R560*|*R580*|*R580/R590*|*R59/R60/R61*|*R59P/R60P/R61P*|*R710*|*R720*|*R780/R778*|*SR58P*|*SR700*|*SR70S/SR71S*|*SX22S*|*X118*|*X120*|*X460*", RUN+="keyboard-force-release.sh $devpath samsung-other"
Press Ctrl-X to exit nano, followed by Y to save the file.
Edit your kernel grub entry,
su -c nano /boot/grub/grub.conf
and add the following,
acpi_backlight=vendor as illustrated below.
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You do not have a /boot partition. This means that
# all kernel and initrd paths are relative to /, eg.
# root (hd0,0)
# kernel /boot/vmlinuz-version ro root=/dev/sda1
# initrd /boot/initrd-[generic-]version.img
#boot=/dev/sda1
default=0
timeout=5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.35.10-74.fc14.x86_64)
root (hd0,0)
kernel /boot/vmlinuz-2.6.35.10-74.fc14.x86_64 acpi_backlight=vendor ro root=UUID=........... rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=uk rhgb quiet
initrd /boot/initramfs-2.6.35.10-74.fc14.x86_64.img
title Fedora (2.6.35.6-45.fc14.x86_64)
root (hd0,0)
kernel /boot/vmlinuz-2.6.35.6-45.fc14.x86_64 ro root=UUID=............ rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=uk rhgb quiet
initrd /boot/initramfs-2.6.35.6-45.fc14.x86_64.img
title Other
rootnoverify (hd1,0)
chainloader +1
Press Ctrl-X to exit nano, followed by Y to save the file.
Now we are going to download and compile the kernel module responsible for making the brightness buttons work.
mkdir samsung
cd samsung
wget http://dl.dropbox.com/u/16953763/samsung-backlight.c
wget http://dl.dropbox.com/u/16953763/Makefile
make
This will compile the samsung-backlight kernel module. The next step is to copy the module to your kernel.
su -c cp samsung-backlight.ko /lib/modules/$(uname -r)/kernel/
su -c depmod -a
su -c modprobe samsung-backlight
Reboot your laptop and try out the FN brightness buttons.
Note: You will have to rebuild / insert the samsung-backlight kernel module every time your kernel is updated.
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