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first disable compositor and change to OpenGL3.1



disable image of lockscreen


disable blur

Terminal:
nano /usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/LockScreenUi.qml

search: WallpaperFaderadd attribute if dont exist or change value
visible: false















install manage keyring
Terminal:
sudo pacman -S seahorse


search the application



change the password keyring (sorry for the picture are ubuntu, but seahorse is same application)





write old password





now type password in blank





accept use unencrypted passwords




That’s it! Restart your computer for the setting to take effect. Next time you launch Chrome or Chromium browser, you should not see keyring request.




Source: https://www.fosslinux.com/2561/how-to-disable-keyring-in-ubuntu-elementary-os-and-linux-mint.htm









create this script and run:


Terminal:
#!/bin/bash

sudo mount -o remount,size=40G,noatime /tmp
echo "Done. Please use 'df -h' to make sure folder size is increased."


source: https://gist.github.com/ertseyhan/618ab7998bdb66fd6c58


















first check to version kernel

Terminal:
uname -a 



my kernel is 4.14.* for this, i install

Terminal:
sudo pacman -S linux414-virtualbox-host-modules

now activate modprobe

Terminal:
sudo modprobe vboxdrv

Terminal:
sudo adduser your_home_user vboxusers

Terminal:
sudo usermod -aG vboxusers your_home_user

that's all