In Finder to display of Hidden files by type Cmd + Shift + . (dot)
To turn on globally type the following command in Terminal:
defaults write com.apple.finder AppleShowAllFiles -bool true
To revert back to hidden append false:
defaults write com.apple.finder AppleShowAllFiles -bool false
To make the Finder change effective type:
killall Finder
| Keyboard shortcut | Action |
|---|---|
| Ctrl + A | Select all content. |
| Ctrl + C (or Ctrl + Insert) | Copy selected items to clipboard. |
| Ctrl + X | Cut selected items to clipboard. |
| Ctrl + V (or Shift + Insert) | Paste content from clipboard. |
| Ctrl + Z | Undo an action, including undelete files (limited). |
These notes apply to Kubuntu 18.04 and Thunderbird 60.9.1.
After Google restricted access for LSA’s (Less Secure Apps) it was necessary to change the Gmail account authentication method from “Normal Password” to OAuth2. After this gcontactsync failed – after logging into Google and successfully allowing access to Contacts it was blocked. After extensively trawling the net for a solution one was found. This said the problem was due to Thunderbird being corrupted and the solution offered was a complete rebuild – drastic but it worked!
Try running DISM and SFC commands to repair Windows system files. Once complete reboot and try running the update again.
DISM /Online /Cleanup-image /RestoreHealth
The above DISM command typically completes without issues, but if there are problems replacing the damaged files, you will need to provide another image using the Source option to complete the task. You can use an “install.wim” or “install.esd” file from another computer, bootable install media, or Windows 10 iso file. Make sure that the files match the version,
Do the following (with Admin account) to associate .wps (Works document) and .xlr (Works spreadsheet) file types to Word and Excel.
If audio output device set to Dummy Device reset audio as follows:
pulseaudio --kill; sleep 2s; sudo alsa force-reload ; pulseaudio --start
Restart audio application(s), e.g. Spotify
This works with Ubuntu 18.04 and may work for other versions too
To add the Suspend icon to the KDE Application Menu
Similarly you can add or remove other shutdown icons.
If when installing an HP 7520 WiFi printer with HP Easy Start you get a warning that the scanner does not support “Bonjour” then you may end up with a working printer but no scanner!
In most cases this happens because you have a dual band router advertising 2.4GHz and 5GHz on the same SSIDs. In short the HP 7420 only works with the 2.4GHz network.
One solution is to disable the 5GHz network or rename it and only connect the Mac and printer to the 2.4GHz SSID network.
Real World Wi-Fi Speeds
| IEEE standard | Wi-Fi Alliance Standard | Theoretical Speed | Real-world Speed |
| 802.11ax | Wi-Fi 6 | 10Gps | 700Mbps |
| 802.11ac | Wi-Fi 5 | 1.3Gps | 200Mbps |
| 802.11n | Wi-Fi 4 | 600Mbps | 150Mbps |
Wireless Broadband Alliance (WBA) real world trials carried out in the “hostile” environment of the Mettis Aerospace facility in the UK West Midlands.