- This topic has 10 replies, 4 voices, and was last updated Feb 9-5:32 am by cakbowo.
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cakbowo
This is my first time to install linux distro to hard drive. And I found some problem that the backlight control in “Preferences” menu and “Fn button” is not working on Toshiba Satellite M200.
The specs:
System: Host: antix1 Kernel: 4.10.5-antix.3-amd64-smp x86_64 bits: 64 gcc: 6.3.0 Desktop: IceWM 1.4.2
Distro: antiX-17_x64-full Heather Heyer 24 October 2017
Machine: Device: other-vm? System: TOSHIBA product: Satellite M200 v: PSMC0L-00P00C serial: N/A
Mobo: Intel model: CAPELL VALLEY(NAPA) CRB serial: N/A BIOS: Phoenix v: 1.20 date: 06/26/2007
CPU: Dual core Intel Core2 T5300 (-MCP-) arch: Conroe rev.2 cache: 2048 KB
flags: (lm nx sse sse2 sse3 ssse3) bmips: 6918
clock speeds: max: 1733 MHz 1: 1333 MHz 2: 1067 MHz
Graphics: Card: Intel Mobile 945GM/GMS 943/940GML Express Integrated Graphics Controller
bus-ID: 00:02.0
Display Server: X.Org 1.19.2 driver: intel Resolution: 1280×800@59.91hz
OpenGL: renderer: Mesa DRI Intel 945GM version: 2.1 Mesa 13.0.6 Direct Render: Yes
Audio: Card Intel NM10/ICH7 Family High Def. Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0
Sound: Advanced Linux Sound Architecture v: k4.10.5-antix.3-amd64-smp
Network: Card-1: Marvell 88E8055 PCI-E Gigabit Ethernet Controller
driver: sky2 v: 1.30 port: 2000 bus-ID: 02:00.0
IF: eth0 state: down mac: <filter>
Card-2: Qualcomm Atheros AR242x / AR542x Wireless Network Adapter (PCI-Express)
driver: ath5k bus-ID: 03:00.0
IF: wlan0 state: down mac: <filter>
Drives: HDD Total Size: 120.0GB (6.7% used)
ID-1: /dev/sda model: Hitachi_HTS54161 size: 120.0GB
Partition: ID-1: / size: 9.6G used: 2.8G (31%) fs: ext4 dev: /dev/sda2
ID-2: /home size: 97G used: 1002M (2%) fs: ext4 dev: /dev/sda3
ID-3: swap-1 size: 4.19GB used: 0.00GB (0%) fs: swap dev: /dev/sda1
Sensors: System Temperatures: cpu: 40.0C mobo: 40.0C
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 160 Uptime: 1 min Memory: 129.5/1993.4MB Init: SysVinit runlevel: 5 Gcc sys: 6.3.0
Client: Shell wrapper inxi: 2.3.40And here’s some info
$ ls /sys/class/backlight/
acpi_video0 intel_backlight$ cat /sys/class/backlight/intel_backlight/actual_brightness
3984375$ cat /sys/class/backlight/intel_backlight/brightness
3984375$ cat /sys/class/backlight/intel_backlight/max_brightness
3984375I already tried to change the GRUB_CMDLINE_LINUX_DEFAULT= to
GRUB_CMDLINE_LINUX_DEFAULT=”acpi_backlight=vendor”
GRUB_CMDLINE_LINUX_DEFAULT=”acpi_osi=Linux”
GRUB_CMDLINE_LINUX_DEFAULT=”acpi_backlight=vendor acpi_osi=Linux”
GRUB_CMDLINE_LINUX_DEFAULT=”acpi_backlight=intel”
GRUB_CMDLINE_LINUX_DEFAULT=”acpi_backlight=intel acpi_osi=Linux”but none of them are working, did I miss something ?
Anonymous
this page describes a solution & mentions an additional step: editing (or creating, if absent) /etc/X11/xorg.conf
https://techoverflow.net/2014/07/27/how-i-solved-my-toshiba-linux-backlight-issues/similarly, this reported solution (not for your exact M200 model) also mentions xorg.conf
https://bbs.archlinux.org/viewtopic.php?id=195967this mentions a solution which specifies nomodeset in the grub line, in addition to acpi_backlight=vendor
https://ubuntuforums.org/archive/index.php/t-1321403.htmlspecific to Fn keys, lookit post #19 in this archived topic:
https://antixlinux.com/forum-archive/how-to-activate-the-screen-brightness-fn-keys-t7179-s15.html
Dave
Over at the MX forum they have been making a new utility to set brightness.
https://forum.mxlinux.org/viewtopic.php?f=118&t=43664Based off of reports in this thread. There is a number of things to try in it.
https://forum.mxlinux.org/viewtopic.php?f=97&t=41893Computers are like air conditioners. They work fine until you start opening Windows. ~Author Unknown
dolphin_oracle
that new brightness-init script is for saving the state of the brightness control between boots, similar to the way the liveUSB system does it already.
I see the OP has 2 backlight interfaces but only provided information for the intel_backlight.
$ ls /sys/class/backlight/ acpi_video0 intel_backlightso we need to figure out which one is driving your backlight. if the OP could post the same information for acpi_video0 backlight that was posted for intel_backlight, that would be great.
that new brightness-init script is for saving the state of the brightness control between boots, similar to the way the liveUSB system does it already.
I see the OP has 2 backlight interfaces but only provided information for the intel_backlight.
$ ls /sys/class/backlight/ acpi_video0 intel_backlightso we need to figure out which one is driving your backlight. if the OP could post the same information for acpi_video0 backlight that was posted for intel_backlight, that would be great.
here’s the acpi_video0
$ cat /sys/class/backlight/acpi_video0/actual_brightness
0$ cat /sys/class/backlight/acpi_video0/brightness
7$ cat /sys/class/backlight/acpi_video0/max_brightness
7Over at the MX forum they have been making a new utility to set brightness.
https://forum.mxlinux.org/viewtopic.php?f=118&t=43664Based off of reports in this thread. There is a number of things to try in it.
https://forum.mxlinux.org/viewtopic.php?f=97&t=41893Is it only for Xfce ?
this mentions a solution which specifies nomodeset in the grub line, in addition to acpi_backlight=vendor
https://ubuntuforums.org/archive/index.php/t-1321403.htmlWhen I add nomodeset in the grub line, the desktop won’t start. Still trying the other solution you post there.
dolphin_oracle
Is it only for Xfce ?
no, its a sysV init script that doesn’t even require a desktop environment, similar to the way the live-USB system works. but it only works to save brightness values between boots, not to set the brightness on the fly.
please try
sudo echo 5 >/sys/class/backlight/acpi_video0/backlightand see if brightness changes any.
- This reply was modified 5 years, 4 months ago by dolphin_oracle.
- This reply was modified 5 years, 4 months ago by dolphin_oracle.
sudo echo 5 >/sys/class/backlight/acpi_video0/backlightand see if brightness changes any.
sudo echo 5 >/sys/class/backlight/acpi_video0/backlight
bash: /sys/class/backlight/acpi_video0/backlight: Permission deniedbut I use this command from https://ubuntuforums.org/showthread.php?t=2088043
echo 7 | sudo tee /sys/class/backlight/acpi_video0/brightness
and it works.
btw yesterday after I shutdown my laptop the acpi_video0 folder is gone so I reinstall it again this morning. Why the acpi_video0 folder is gone ?
- This reply was modified 5 years, 3 months ago by cakbowo.
Attachments:
Why the acpi_video0 folder is gone ?
https://www.tecmint.com/linux-directory-structure-and-important-files-paths-explained/
https://en.wikipedia.org/wiki/Sysfs
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