Set Color Depth
Maybe you would like to set "bit depth" to 16-bit or 24-bit or 32-bit.
Unless you are running proprietary drivers, the instructions for doing this are difficult and should not be undertaken unless you are experienced editing your xorg.conf file on ubuntu.
Text is Blurry on my CRT
Go to "Customize Look and Feel", turn off Subpixel Geometry on the Fonts tab.
Can't Change to Screen Resolution I need For My Monitor or Laptop Screen
Does "Monitor Settings" in the Preferences sub-menu not list the resolution you need?
Make a note of the video chipset you have, for example "ATI Mobility Radeon™ HD 5430 Graphics" and head to the Ubuntu forum for help. Also mention your version of Lubuntu.
Alternatively, you can use the xrandr (in the terminal) directly. More info here.
Screen resolution is wrong, no matter what I do
Quick fix that often works
Maybe it will help if you edit the file /etc/default/grub, (remove #)
sudo nano /etc/default/grub
# Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console
# Uncomment to disable graphical terminal (grub-pc only) GRUB_TERMINAL=console
and make it active by running
and reboot the computer.
Sometimes it takes real tweaking to solve the problem
This needs some real tweaking, mostly from console (tty aka teletype). First we need to get to the console and it is done by pressing following keys:
Login with your credentials. After login, we need to stop LightDM (or LXDM, GDM, or KDM) with the command
sudo service lightdm stop
Now we can access X Window System for making an Xorg configuration file with the command
sudo Xorg -configure
Then we have to move the new configuration file to a correct place.
sudo mv xorg.conf.new /etc/X11/xorg.conf
After this we need to edit xorg.conf a little, actually we need to add our desired resolution. We need to find a section "Screen" and make sure you have Modes "Reso x Lution" there like you can see from bottom.
sudo nano /etc/X11/xorg.conf
Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 Modes "1024x768" EndSubSection
Now you have edited xorg.conf, you can save it and then you need to start LightDM with command
sudo service lightdm start
And you should have a correct resolution when you press
To return back to X Window System.
My machine doesn't remember brightness settings
There is a known issue with 11.10 when it comes to brightness. Your machine doesn't remember your brightness settings and everytime you reboot, it back to the maximum value.
There is a simple workaround for this - please see the main reference.
gksudo leafpad /etc/rc.local
comment out the
by adding # in the begining. Then add this line after that:
echo 0 > /sys/class/backlight/acpi_video0/brightness
replace 0 with the required brightness value ( ranges from 0 to 10 )
The file will look like this:
# # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. #exit 0 echo 0 > /sys/class/backlight/acpi_video0/brightness
Save the file and exit.
Reboot your machine to make sure it works.