OSX 10.9 Upgrade Issue
Issue: Get error message: "This copy of the Install OS X Mavericks application can't be verified. It may have been corrupted or tampered with during downloading." Then it could not…
Hands-on IT and troubleshooting notes — the fixes I worked out for real Linux, WordPress, networking, Mac and server problems, written down so the next person (often future me) doesn’t have to solve them twice.
Drupal Advanced Forum Remove Statistics Pane
Background: It's good to have various groups of users to access relevant forums only and cannot see or know what other forums are. But by default Advanced Forum module displays…
Bluetooth Receiver Connectivity & Sound Quality Issues
Issue: No sound to earphone connected to Bluetooth receiver which is successfully paired and connected to OpenSuse. After successfully played the sound to Bluetooth receiver with earphone, the sound quality…
WordPress/WooShop Bugs on Slider specifically for iOS
Issue: Suddenly the Slider show disappeared on iPad. After restoring to previous versions of the page, it was figured out that some kind of video types, (in my case, it…
Yum – Warning: RPMDB altered outside of yum … killed
Issue: Yum cannot proceed even though the Transaction Testing is passed. but after seeing a message: Warning: RPMDB altered outside of yum then waited for a while, it showed: killed.…
Postfix/Dovecot Mail Server Cannot Receive Emails from Outside
Issue: Suddenly observed emails couldn't reach my email server after setting up completely and working properly for quite a while. Then check the following: if the server (Postfix/Dovecot) are up…
Drupal Filter Content Issue
Issue: When managing contents of Drupal, there is Ajax error as follows when filtering the contents to be listed provided that overlay module is enabled: An AJAX HTTP error occurred.…
Drupal PHPMailer
Issue: After installing, enabling and configuring Drupal's PHPMailer module using Google gmail SMTP server, still could not send out email. Solution: Login to gmail, authenticate again with mobile phone received…
Amazon EC2 Total Connection Lost
Background: Trying to set up another Drupal site on free tier of Amazon cloud, the feeling and setup are all good! After setting up LAMP stack, suddenly received an email…
Firefox Bad Behaviour in Linux
Background: Firefox has been widely deployed in various Linux distributions and Mac OS X. Recently, it has been the default browser for most Linux distributions. Most of the web-based applications…
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