Linux

Problem statement I ran into a very confusing Firefox issue on Linux (Wayland): firefox → freezes / not responding firefox --kiosk → ✅ works firefox --preferences → ✅ works Creating a new tab or popup → ❌ freezes again Disabling all extensions → ❌ still freezes Creating a new Firefox profile → ✅ works Deleting prefs.js → ✅ fixes it At first glance this looks like: an extension bug GPU / cache corruption session restore issue But none of those were the real cause. ...

Install these packages and restart file manager sudo xbps-install libheif libheif-tools Note: HEIC thumbnails in pcmanfm didn’t work for me.

Table 1: Recommended system swap space in Fedora 28 documentation {.wp-block-heading} Amount of system RAM Recommended swap space Recommended swap with hibernation less than 2 GB 2 times the amount of RAM 3 times the amount of RAM 2 GB – 8 GB Equal to the amount of RAM 2 times the amount of RAM 8 GB – 64 GB 0.5 times the amount of RAM 1.5 times the amount of RAM more than 64 GB workload dependent hibernation not recommended Table 2: Recommended system swap space per the author {.wp-block-heading} Amount of RAM Recommended swap space ≤ 2GB 2X RAM 2GB – 8GB = RAM >8GB 8GB

HiDPI (High Dots Per Inch) displays, also known by Apple’s “Retina Display” marketing name, are screens with a high resolution in a relatively small format. They are mostly found in high-end laptops and monitors. update this ~/.Xresources Xft.dpi: 240 reboot or re-login to system

1. Configure DNS Records In order to set up the desired redirect, www.example.com to example.com or vice versa, you must have an A record for each name. 2. Enable the mod_rewrite module 3.1 Update site.conf or .htaccess file ( www to non-www) 3.2 Update site.conf or .htaccess file ( non-www to www) Example ServerName example.net Documentroot /var/www/html/ ...