Cannot Change Ownership on NFS Files
Issue: After moving mounted volumes from Qnap NAS to iMac as host with CentOS as client, the directory and file ownership cannot be changed to Apache at the client side. No matter…
hsla HTML Color Scheme
Just learnt how to use hsla (hue, saturation, light, alpha) html color scheme from Castro's HTML5 and CSS3. I found it's beauty that it is more logical to think of various…
Scrolling to Section ID Missing
Issue: When moving some of the content to a single page design, the menu link will be addressing the div id instead of another page. But after all set up…
WooCommerce Showing Unmatched Variations
Issue: error: "Sorry, no products matched your selection. Please choose a different combination." WooCommerce in WordPress shows all variations of variable product including unmatched variations thus the above error message may…
WordPress Custom CSS Disappear
Background: It is quite terrifying if suddenly all the custom CSS disappear and you do not have a backup of the text of the custom CSS that is not just one or…
Fix WiFi Range Extender Performance Issue
Issue: Netgear EX6120 Range Extender connection to router initially with acceptable signal strength, then suddenly it dropped to low level around 6Mbps. Solution: Set channel of the WiFi router from…
MathJax Incompatibility to LaTex
Issue: "Error: Missing argument to \begin" when using \color command and together with \boxed command in WordPress with MathJax plugin as if they are under LaTex syntax. Solution: Adding {}…
VirtualBox VM Inaccessible on Mac
Issue: "The selected virtual machine is inaccessible. Please inspect the error message shown below and press the Refresh button if you want to repeat the accessibility check." After saving states…
Wacom Pen Control
Issue: As my iPad Mini (gen 1) cannot sense touch pressure, it is difficult to write (actually draw) some Math symbols. After purchasing a Wacom Intuos Draw Medium which is…
iMac View Camera Capability
Issue: While conducting Online Live Class using Join.Me, and I need to select real-time video as profile. However, it seems that the built-in view camera in iMac cannot make any adjustment.…