Monitor Brightness

[3dmatrix]

Sorry , but your problem is weird. It seems that corrected , but...

Try again the parameters. Maybe something changed with the update and now you can use other parameters to adjust your brightness correctly.

I know that this is a pain in the .... , but you must try again. You need 3 reboots. One with each parameter.

1. acpi_osi=
2.acpi_osi=Linux
3.acpi_backlight=vendor

If non of above do something then try to combine each parameter with this parameter : acpi=force

Do not forget to run

sudo update-grub

to pass the parameters to the kernel.

Thanks

in /etc/default/grub at made the following changes (one at a time)

1.acpi_osi=
2.acpi_osi=Linux
3.acpi_backlight=vendor
4.acpi_osi= acpi=force
5.acpi_osi=Linux acpi=force
6.acpi_backlight=vendor acpi=force

with sudo update-grub and rebooting after each change but nothing happened.

Then i changed it to acpi_osi=
and removed the # from
echo 1000 > /sys/class/backlight/intel_backlight/brightness
in /etc/rc.local file and updated grub and after rebooting the brightness would remain low as long as i do not use the keyboard shortcut for changing the brightness. Once i do so, it jumps to maximum and then can be brought down only by abt 10%. But from system settings > Brightness & Lock i can use the slider to reduce the brightness.

.

[3dmatrix]

As we have still not been able to figure out any good solution to this problem, and i have to use the System Settings > Brightness and Lock slider to adjust the brightness, i was thinking of putting the Brightness and Lock applet / shortcut on the top Gnome 3 taskbar (as shown in the attachment). Can any one tell me how we could do that ? I have seen this can be done in Mint Cinnamon so may be we can do it here too. That won't solve the problem but may be reduce the number of clicks that i have to do every time to change the brightness !

[NikTh]

Hi,

what are the entries now in /etc/default/grub file ?

cat /etc/default/grub

. Its very weird that none of the parameters worked for you. You tested them correctly as I can see.

But is good that you can increase or decrease the brightness from the Brightness & Lock.

See this thread and especially the 6th answer (pqwoerituytrueiwoq's answer). Try to create this script and see if you can create some shortcuts to increase an decrease brightness.

Thanks

[Linuxisfast]

The easiest solution that works minus any modification is to install xbacklight and set the value in startup, for instance my laptop is set at 80% so my command looks like xbacklight -set 80 and during startup, that value is set automatically, I use it in conjunction with Redshift and both work out very well.

[3dmatrix]

The easiest solution that works minus any modification is to install xbacklight and set the value in startup, for instance my laptop is set at 80% so my command looks like xbacklight -set 80 and during startup, that value is set automatically, I use it in conjunction with Redshift and both work out very well.

I do not think xbacklight works on my system

[3dmatrix]

Hi,

what are the entries now in /etc/default/grub file ?

cat /etc/default/grub

. Its very weird that none of the parameters worked for you. You tested them correctly as I can see.

But is good that you can increase or decrease the brightness from the Brightness & Lock.

See this thread and especially the 6th answer (pqwoerituytrueiwoq's answer). Try to create this script and see if you can create some shortcuts to increase an decrease brightness.

Thanks

cat /etc/default/grub

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
# info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi="
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xe fefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"

[3dmatrix]

Try to create this script and see if you can create some shortcuts to increase an decrease brightness.

Thanks

Yes that is what i wish to know, how can we place ANY shortcut on that Gnome 3 task bar ?

[NikTh]

If by

how can we place ANY shortcut on that Gnome 3 task bar ?

gnome 3 you mean the gnome-shell Environment , then try to search here : https://extensions.gnome.org/ for an extension. You install them by clicking in the light button.

Thanks

[3dmatrix]

If by
gnome 3 you mean the gnome-shell Environment , then try to search here : https://extensions.gnome.org/ for an extension. You install them by clicking in the light button.

Thanks

In Gnome 2 (classic) we could add anything that was in the main menu, in to taskbar. It was so simple. Even user commands could be added. But now we have to add third party extensions. Why are things being made less user friendly ? There must be some where we could edit and add path to applications, to be displayed on the top bar.