topic title: Brightness Control on 8.5
Posts: 84
nujinini
Joined: 05 Jun 2010
#1
Hello! __{{emoticon}}__

May I please ask for help again on how to try to make me control brightness in my laptop.
I took the liberty of posting some outputs that I hope can help in solving my issues.

My machine by the way is a lenovo G430.

Thanks!

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jun@(none):~$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
jun@(none):~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation ICH9M/M-E 2 port SATA IDE Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
00:1f.5 IDE interface: Intel Corporation ICH9M/M-E 2 port SATA IDE Controller (rev 03)
05:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller
05:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller
05:00.3 System peripheral: JMicron Technology Corp. MS Host Controller
06:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)
07:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5906M Fast Ethernet PCI Express (rev 02)
jun@(none):~$ inxi -F
System:    Host (none) Kernel 2.6.32-1-mepis-smp i686 (32 bit) Distro antiX-M8.5 Marek Edelman 11 April 2010
CPU:       Dual core Intel Pentium Dual T3400 (SMP) cache 1024 KB flags (lm nx sse sse2 sse3 ssse3) bmips 8646.54 
           Clock Speeds: (1) 1000.00 MHz (2) 1000.00 MHz
Graphics:  Card Intel Mobile 4 Series Chipset Integrated Graphics Controller X.Org 1.6.5 Res: 1024x768@71.0hz 
           GLX Renderer Software Rasterizer GLX Version 2.1 Mesa 7.7.1 Direct Rendering Yes
Audio:     Card Intel 82801I (ICH9 Family) HD Audio Controller driver HDA Intel BusID: 00:1b.0
           Sound: Advanced Linux Sound Architecture Version 1.0.21
Network:   Card-1 Broadcom BCM4312 802.11b/g LP-PHY driver wl BusID: 06:00.0
           Card-2 Broadcom NetLink BCM5906M Fast Ethernet PCI Express driver tg3 v: 3.102 BusID: 07:00.0
Disks:     HDD Total Size: 250.1GB (0.9% used) 1: /dev/sda Hitachi_HTS54252 250.1GB 
Partition: ID:/ size: 9.9G used: 2.2G (24%) fs: ext3 ID:swap-1 size: 6.96GB used: 0.00GB (0%) fs: swap 
Info:      Processes 94 Uptime 22 min Memory 109.2/2907.2MB Runlevel 5 Client Shell inxi 1.4.9 
jun@(none):~$
I happen to see this. May I please also know how I can use this for my system, if its at all possible?
Re: Brightness control in Lenovo G430
I found a solution at
========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"http://ubuntuforums.org/showthread.php?t=1321403"
linktext was:"http://ubuntuforums.org/showthread.php?t=1321403"
====================================

Edit /etc/default/grub as root.
Add 'nomodeset acpi_backlight=vendor' to the GRUB_CMDLINE_LINUX_DEFAULT line.
Lastly, run update-grub as root after saving the file.
Posts: 1,228
secipolla
Joined: 15 Jun 2008
#2
That is for GRUB2, for antiX, which uses GRUB legacy, you should add that parameter to the 'kernel' line for antiX in /boot/grub/menu.lst.
But you can test it before adding it by hitting 'e' during the GRUB menu screen and adding it to the end of the kernel line, then 'b' to boot. If it works you add it to the menu.lst file.
Obs.: add it without quotes.
Posts: 1,228
secipolla
Joined: 15 Jun 2008
#3
If I understood well, you should run

Code: Select all

xrandr –output LVDS –set BACKLIGHT_CONTROL native
from terminal after adding that parameter to the kernel line:
========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"http://www.linlap.com/wiki/lenovo+3000+g430"
linktext was:"http://www.linlap.com/wiki/lenovo+3000+g430"
====================================
Posts: 84
nujinini
Joined: 05 Jun 2010
#4
hi secipolla,

I added 'nomodeset acpi_backlight=vendor' to kernel line and still it does not enable backlight control, fyi. Thanks! __{{emoticon}}__

jun@(none):~$ xrandr --output LVDS --set BACKLIGHT_CONTROL native
warning: output LVDS not found; ignoring
X Error of failed request: BadRROutput (invalid Output parameter)
Major opcode of failed request: 148 (RANDR)
Minor opcode of failed request: 15 (RRGetOutputProperty)
Serial number of failed request: 26
Current serial number in output stream: 26
jun@(none):~$
Posts: 516
oldhoghead
Site Admin
Joined: 01 Oct 2007
#5
nujinini,

Try adding to kernel line

nomodeset acpi_backlight=vendor i915.modeset=1

see if that helps

cheers,
oldhoghead
Posts: 84
nujinini
Joined: 05 Jun 2010
#6

Code: Select all

title ( 6 ) antiX at sda10, kernel 2.6.32-1-mepis-smp
root  (hd0,9)
kernel /boot/vmlinuz-2.6.32-1-mepis-smp root=/dev/sda10 nomce quiet nosplash vga=791 nomodeset acpi_backlight=vendor i915.modeset=1
initrd /boot/initrd.img-2.6.32-1-mepis-smp
boot

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jun@(none):~$ xrandr --output LVDS --set BACKLIGHT_CONTROL native
warning: output LVDS not found; ignoring
X Error of failed request:  BadRROutput (invalid Output parameter)
  Major opcode of failed request:  148 (RANDR)
  Minor opcode of failed request:  15 (RRGetOutputProperty)
  Serial number of failed request:  19
  Current serial number in output stream:  19
jun@(none):~$
I guess it didn't work. Thank you for trying! __{{emoticon}}__