Error ko:~/android-sdk-linux/tools/emulator64-arm: invalid option — ‘-enable-kvm’ when trying to use KVM with Android Studio

This error Error ko:~/android-sdk-linux/tools/emulator64-arm: invalid option — ‘-enable-kvm’ only comes if you are trying to use KVM with and arm processor. KVM with android studio currently only works with Intel processors.

Ubuntu Boot Manager Partition entry overwritten after Windows 8.1 patch update

I recently applied the latest Windows 8.1 patches. To my dismay, I found that the core Ubuntu 14.04 entries at boot time were missing and by default, the laptop always booted into Windows 8.1.

This meant that my Ubuntu EFI boot partition had been corrupted or taken over by Windows 8.1 patches that probably updated . . . → Read More: Ubuntu Boot Manager Partition entry overwritten after Windows 8.1 patch update

View EFI boot manager entries in Ubuntu

If you need to view the boot manager entries in Linux, open a terminal window and enter the command as below. $ sudo efibootmgr -v <enter>

Above command lists out all the boot partitions for EFI.

Install qemu-kvm on Ubuntu Linux

Check if kvm can run on the computer $ sudo kvm-ok <enter>

If it returns lines as follows, then it will work INFO: /dev/kvm exists KVM acceleration can be used

Install qemu-kvm Open a terminal window and enter the commands below. $ sudo apt-get install qemu-kvm libvirt-bin ubuntu-vm-builder bridge-utils virt-viewer virt-manager qemu-system <enter>

$ sudo . . . → Read More: Install qemu-kvm on Ubuntu Linux

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 . . . → Read More: 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 . . . → Read More: 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 . . . → Read More: Install Fedora 18 on Lenovo Ideapad Z580 laptop

Disable SecureBoot in BIOS of the Lenovo Ideapad Z580 laptop

Get into the BIOS by pressing the Novo button on the laptop, just near the power button. You can use the Novo button only after you shutdown the laptop.

Once in, you will get a menu with the devices available for booting. Clicking on anyone of them will not start the image / Live CD . . . → Read More: Disable SecureBoot in BIOS of the 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 . . . → Read More: 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 . . . → Read More: Ubuntu 12.04 LTS freeze when booting with newer kernels on Lenovo Ideapad Z580

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