Siduction Forum
Siduction Forum => Upgrade Warnings => Topic started by: orinoco on 2014/04/06, 19:00:41
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Hello,
today I installed the latest Sidunction 64Bit on an older notebook. It's a Dell D830 with an Intel 965 graphic chip. After installation from usb-stick everything is fine. I can adjust brightness with Fn+Cursor (up|down). After d-u something changed. Now the display ist very dark and I can't adjust brightness anymore. I did some google search and tried the advice from http://wiki.gentoo.org/wiki/Intel#Brightness_doesn.27t_change_with_keyboard_shortcuts (http://wiki.gentoo.org/wiki/Intel#Brightness_doesn.27t_change_with_keyboard_shortcuts) to add
video.use_native_backlight=1
in the kernel parameters.
I also tried to create a xorg configuration like described in https://wiki.archlinux.org/index.php/Intel#Backlight_not_fully_adjusting.2C_or_adjusting_at_all.2C_after_resume. (https://wiki.archlinux.org/index.php/Intel#Backlight_not_fully_adjusting.2C_or_adjusting_at_all.2C_after_resume.) It doesn't help, too.
Any ideas how get brightness back?
P.S. More details: Fn+Cursor(up|down) still works in grub and early boot-phase (big letters in textmode). After turning into large resolution (is it kms?) the text gets darker and Fn+Cursor(up|down) doesn't work anymore.
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http://forum.siduction.org/index.php?topic=4442.0;topicseen
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This seems to be valid workaround for me
$ cat /etc/X11/xorg.conf.d/20-intel.conf
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "sna"
Option "Backlight" "intel_backlight" # use your backlight that works here
BusID "PCI:0:2:0"
EndSection