How to upgrade Dell BIOS on a Ubuntu laptop with FreeDOS

Those of us who use only Linux Laptops like Dell's Vostro 3546 with Ubuntu 12.04 LTS installed on it, cannot just apply the BIOS upgrades that Dell provides on it's web site. The BIOS update file is actually a MS DOS .EXE file and it requires MS DOS to work. Here's how to apply the … Continue reading How to upgrade Dell BIOS on a Ubuntu laptop with FreeDOS

How to get back Ubuntu in Boot Menu after Windows 8 to Windows 8.1 upgrade with efibootmgr

If you are the an open source fanatic who has been sold a laptop with Windows 8 on it in India, you would have been reminded to upgrade to Windows 8.1 by Microsoft periodically. I was reminded 3 times. Each time I chose to ignore it. Finally, I decided to upgrade from Windows 8 to … Continue reading How to get back Ubuntu in Boot Menu after Windows 8 to Windows 8.1 upgrade with efibootmgr

Install Fedora 18 on Lenovo Ideapad Z580 laptop

Finally, installed Fedora 18 64 bit on the Lenovo Ideapad Z580 laptop and it works almost perfect. Basically, Fedora 18 support UEFI (Unified Extensible Firmware Interface). I tried Ubuntu 12.04.2 LTS as suggested on several blog posts first. Did a successful installation, but there were random, unpredictable hangs when booting. All of them listed USB … Continue reading Install Fedora 18 on Lenovo Ideapad Z580 laptop

How to improve Lenovo Ideapad Z580 battery backup time and reduce heat in Ubuntu Linux

The Lenovo Ideapad Z580 comes with the Intel HD 4000 on board graphics and a Nvidia GT630M 1 GB DDR3 graphics card. The technology behind it is called Optimus, where in Windows, the computer can manage the switch between the graphics cards (on board or otherwise) when graphics power is needed. As the Nvidia graphics … Continue reading How to improve Lenovo Ideapad Z580 battery backup time and reduce heat in Ubuntu Linux

Ubuntu 12.04 LTS freeze when booting with newer kernels on Lenovo Ideapad Z580

This is due to an issue in the BIOS where booting gets stuck due to ACPI and battery support. Refer this link https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1093217/comments/63. Now start up a terminal window and type the following commands: $ sudo apt-get install iasl <enter> $ sudo cp /sys/firmware/acpi/tables/DSDT /home/user/DSDT.bac $ sudo chown user.group DSDT.bac <enter> $ cp DSDT.bac DSDT … Continue reading Ubuntu 12.04 LTS freeze when booting with newer kernels on Lenovo Ideapad Z580

Speed up your PC

Enable Video ROM BIOS shadow option. Enable L1 & L2 caches without ECC checking Onboard graphics shared VGA memory should be 16MB for 128MB of RAM. Reduce CAS (Column Access Strobe) latency. Try 2 in place of 3. But if system crashes, revert back to earlier value.