Fix for brightness issue in Ubuntu 13.10

In Ubuntu 13.10, I found that I was unable to change the brightness either by using the brightness keys or moving the brightness slider in System Settings. To fix the issue, I had to change the file /etc/default/grub to reflect the following:



GRUB_CMDLINE_LINUX=”quiet splash acpi_osi=Linux acpi_backlight=vendor”

Fix Hybrid Graphics high power consumption and overheating

[UPDATE]: Ubuntu now supports ATi + Intel hybrid graphics systems in the 13.10 and 12.04.03. Here’s how to make it work:

Make sure any other fglrx driver is not installed. Install fglrx and fglrx-pxpress as follows:

sudo apt-get install fglrx fglrx-pxpress

If you have added the lines in /etc/rc.local as in the previous solution, please remove them and reboot the system.

In my machine the AMD/Intel setup is working fine. There is no high power consumption and overheating of the system. Also, I am able to switch between the cards effortlessly through Catalyst Control Center. Thanks Ubuntu/AMD!



In systems with ATi + Intel hybrid graphics running *Ubuntu 13.04 and 13.10 distros, I have noticed high CPU usage and overheating resulting in very high power consumption and low battery backup.

For people facing the issue, this can be solved by adding the following lines in the /etc/rc.local file:

sudo chmod -R 705 /sys/kernel/debug
sudo chown -R username:username /sys/kernel/debug/vgaswitcheroo
sudo echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

Replace username is the second command with your username.

After this run: sudo update-grub and reboot your system.

This is a temporary fix as here we disable the discrete AMD card and just keep the onboard Intel card switched on.

Chrome on Ubuntu 9.10

In my previous post, I gave a how-to of installing Chromium browser(development version of Google Chrome) on Arch Linux. In this post I’ll show you how to install Chromium on Ubuntu 9.10(Karmic Koala).
1. Go to System->Administration->Software Sources. Go to tab “Other Software”.
2. Click Add. In ‘APT Line’ paste the following:
deb karmic main
Click Add again and paste the following:
deb-src karmic main
Click Close and Reload.
3. In a terminal paste the following:
sudo apt-key adv --recv-keys --keyserver 0xfbef0d696de1c72ba5a835fe5a9bf3bb4e5e17b5 && sudo apt-get update
4. Install chromium using the following command:
sudo apt-get install chromium-browser

That’s it. You’re done.
I’ve also made a screen-cast of the procedure. Yay! My first youtube video. 😀

Font Appearance in Ubuntu…

As I said in my previous post, fonts are the most coveted jewelerry to brace your desktop. So keeping it clear and beautiful is a must.

To get good fonts in Ubuntu(I feel the defaults suck quite a bit), you can install the msttcorefonts package. Make sure you have the universe repository enabled. Fire up the terminal and type the following:

sudo apt-get install msttcorefonts

If you’ve got other fonts, installing them is as easy as copying the fonts files to the ~/.fonts directory. If you don’t find the directory, you can just create one.

After the installation, go to System–>Preferences–>Appearance. Select the Fonts tab. Select your favourite fonts for the different purposes from the dropdown lists(my favourite is Trebuchet MS) and set a good size(I have set mine to 8 ) so that they look clean and clear.

Now if you are using an LCD screen, you can make them look even better. Under the Fonts tab, select ‘Subpixel smoothing(LCDs)’ under Rendering. Then Click on Details. Select Resolution to be 96 dpi. Under Hinting, select ‘Slight’. Close the windows and see the difference for yourself.