VirtualBox – Ubuntu slow and laggy UI

To solve the Ubuntu UI slow performance issue on VirtualBox, increase the “Video Memory” and “Enable 3D Acceleration” Environment VirtualBox 5.1.14 Ubuntu 16 Solution 1. Shutdown VM, clicks “Settings” 2. Display –>> Screen tab –>> Increase the “Video Memory” to Max, and checked the “Enable 3D Acceleration” Done. References What is ‘Ubuntu Unity’ (for the …

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VirtualBox – No backlight on CMSTORM keyboard

This article shows you how to enable the backlight feature (Screen Lock key) on a CMSTORM keyboard. Environment VirtualBox 5.1.14 Ubuntu 16 1. Solution – Quick To fix it quickly, run the following command in a terminal, and press the “Screen Lock key” again, the backlight should be enabled. Terminal $ xmodmap -e ‘add mod3 …

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VirtualBox – Copy and Paste between host and guest machine

By default, the copy and paste between host and guest machine is disabled, To enable it, update “Shared Clipboard” to “Bidirectinal“. 1. Steps to enable Copy and Paste 1.1 Shutdown the VM, in VirtualBox Manager, clicks “Settings” 1.2 General –>> Advanced Tab, update the “Shared Clipboard” to “Bidirectinal”. 1.3 Start the VM, the copy and …

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Windows 10 – Edit Hosts file

In this tutorial, we will show you how to add a mapping of IP addresses to host names in the Windows Hosts file. Windows Hosts file C:\Windows\System32\drivers\etc\hosts 1. Notepad – Run as Administrator In desktop, left-bottom search box, type notepad, right click on the notepad icon and select run as administrator. 2. Edit hosts 2.1 …

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Windows 8.1, black screen with movable cursor

Here’s the scenario, morning wake up and find out my Windows 8.1 is displaying a black screen upon boot, no login screen, but a movable white cursor, random clicks will display the small loading icons? Problem : Black screen upon boot, movable cursor. Unable to display the Windows login screen. Detail : Windows 8.1 64 …

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Google Chrome displays pink color screen

Problem After upgrading from Windows 8 Enterprise to Windows 8.1, Google Chrome displays pink color screen like this : Windows Environment Chrome 34.0.1847.137 m Windows 8.1 NVIDIA 331.58 Chrome GPU : NVIDIA 9.18.13.3158 To get the Chrome GPU, type chrome://gpu in the browser URL, refer to the driver version. Driver vendor NVIDIA Driver version 9.18.13.3523 …

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Where does FireFox store the Cookies ?

Simple question, but not anyone will know the answer. Actually the Firefox 3.x does stored the Cookies in the following folder C:\Documents and Settings\{your username} \Application Data\Mozilla\Firefox\Profiles\{random mix char}.default The cookie information is stored in the files “cookies.sqlite” and “permissions.sqlite”. However the content inside are all rubbish characters, you may not able to view it …

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How to clear / delete recent document history?

Windows store all the documents , images or files you have recently opened in “Recent Documents Folder” . Sometime it’s a handy function to access your recent document, but it also raise out a serious privacy issue, because anyone who has access to your computer can know what files you’ve opened recently. How to clear …

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Top 5 Strongest Password

Many users are cracked because of their poor password structure, here i summarize 5 of the strongest password that i know. Hope this help. 5. Combine partial unrelated words together Combine partial 2 or 3 or even 4 unrelated words together (mix uppercase and lowercase), for example, combine these words together like “Diamond”, “Blog”,”Security” to …

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Different between Inline and Attachment in Email

Today when i debugging a Java Mail program, i find out one of the checking is about “Part.Attachment” and “Part.Inline” in email message. What is the different between Inline attachment and attachment? Inline Attachment Inline attachment usually is an attachment that we can see direclty within the email message body. For Example, In outlook express, …

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How to check the CPU temperature ?

Often time , i like to know my computer, motherboard or CPU temperature. It’s will be better if some utility tools provide the functionality to show all my processors or CPU temperature ~ Here is the two free tools that i used to check my CPU temperature Core Temp Software Name : Core Temp Website …

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