USB OTG cable and printing on HP All-In-One Printer from Android

I wonder why we need to route printing activities over Cloud Print to print on a printer installed at home.

Fortunately, I have an HP F735 deskjet printer which does not have wireless printing capability and I need to print from an Android phone to it. The only way was to use a USB OTG . . . → Read More: USB OTG cable and printing on HP All-In-One Printer from Android

Error when creating Android Project in Eclipse IDE

android-sdks/build-tools/17.0.0/aapt: error while loading shared libraries: libz.so.1: cannot open shared object file: No such file or directory

To fix the above error, open a terminal window and install: $ sudo apt-get install lib32z1 <enter>

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

VirtualBox does not open .vdi file after it is used with kvm

If you installed VirtualBox and later changed your mind to use the .vdi file with kvm, it will work, but when you go back to VirtualBox, it cannot be used.

This is because, when it was opened with qemu/kvm, the owner and group became root.

To open the file again in VirtualBox, open a terminal . . . → Read More: VirtualBox does not open .vdi file after it is used with kvm

How to set up an isolated Guest WLAN on TP-Link WDR4300 with OpenWRT using command line

You have guests at your home and they want to use your wireless network to retrieve emails, etc off the Internet. This is not a unique situation, but is quite common everywhere, with the proliferation of devices and services that require Internet access. The only issue you face is that if you give them your . . . → Read More: How to set up an isolated Guest WLAN on TP-Link WDR4300 with OpenWRT using command line

How to increase Battery life on an Android phone with Cyanogen Mod 11

So you managed to install CyanogenMod 11 on your phone. Very good, till you realize that the battery just lasts 12 hours.

Nothing to worry about, as CyanogenMod has provided features that can help conserve the battery life once you activate the Performance menu.

To activate Performance Menu, go to Settings->About Phone. Look for the . . . → Read More: How to increase Battery life on an Android phone with Cyanogen Mod 11

How to enable Local Groups on Android Phone after installation of CyanogenMod 11

After installing Cyanogen Mod on an Android phone, comes the task of importing the backed up contacts.

In stock ROM of Samsung, Sony, etc, there is option of classifying contacts into groups that remain local. You can also filter by them and import/export contacts from/to by those groups only.

However, with Cyanogen Mod, you can . . . → Read More: How to enable Local Groups on Android Phone after installation of CyanogenMod 11

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