Cannot download HP printer driver using Chromium/Firefox on Linux

  Problem: Somehow the “Software & Drivers” option does not show up when I try to download the printer driver of HP LaserJet Pro MFP M127fn from the official HP website using Chromium, Firefox, Opera and most web browsers on Linux. Solution: Use Konqueror on Linux or another OS.

GVim problems after upgrading to Ubuntu 11.10 Oneiric Ocelot

After upgrading Ubuntu 11.04 (Natty Narwhal) to 11.10 (Oneiric Ocelot), GVim starts to behave weirdly. 6 May 2012 UPDATE: Issue persists even after upgrading to 12.04 (Precise Pangolin)! 🙁 Symptoms: It sometimes freezes during startup, rendering the window greyish. If you wait, it may or may not regain control. When it doesn’t freeze during startup, […]

How to reduce size of VirtualBox VDI file

Scenario: VirtualBox version = 4.0.12 Guest OS = Win 7 Host OS = Linux Mint 9 Isadora (based on Ubuntu) Perform these tasks on all the Win 7 local hard-disks: chkdsk /F defrag /X sdelete -z Shutdown the Win 7 VM, then run this command on Mint: [shell]$ VBoxManage modifyhd /home/user/.VirtualBox/HardDisks/win7.vdi –compact[/shell] That freed up […]

Fix outdated/corrupted EPEL repo metadata

yum update failed in RHEL (Red Hat Enterprise Linux) server 5.5 with EPEL repo added: [root@server ~]# yum update Loaded plugins: rhnplugin, security Skipping security plugin, no data Setting up Update Process Resolving Dependencies Skipping security plugin, no data –> Running transaction check —> Package cups.x86_64 1:1.3.7-18.el5_5.8 set to be updated —> Package cups-libs.i386 1:1.3.7-18.el5_5.8 set […]

Why is Drupal “Contact Form” not sending any email?

PROBLEM : My “Contact Form” in Drupal (v6.14) was not delivering any email to my mailbox. No error was indicated in Drupal logs. SOLUTION : Turned out my web hosting company had to move my domain name record from /etc/localdomains to /etc/remotedomains. Here’s a php script to test the sending of email: <?php $to = […]