Programming and reading.
When everything closes, are you sure that’s the lock screen and not the login screen? It sounds like cinnamon is crashing, which means you’re automatically switched back to the display manager (login screen). This can sometimes show the boot logo while it’s switching, happens on my laptop as well, noy sure why that is.
If it is crashing, you might find the cause in the logs, run journalctl -e and dmesg to check for errors
555 is still in beta, so I wouldn’t be surprised if something doesn’t work. That said, I haven’t experienced what you have (on GTX 1070 TI), though using 555 causes lots of kernel errors for me. Checking dmeg might reveal something in your case as well.
It’s not a question of the browser, it’s the addon. There are separete APIs for local and synced storage (but same interface). Both browsers use the same main api (web extension).
Pretty sure the commenter above meant that the their RAM was advertised as X GiB but they only got X GB, substitute X with 4/8/16/your amount
You can set the initial value directly in /etc/environment, did you check that? It could also be set only for your user, so it might be in ~/.profile, ~/.bashrc or ~/.bash_profile` (or the rc file for your shell if you’re not using the default bash).
Edit: I suppose you could also have added a startup script in /etc/init/ or /etc/init.d/, or in /etc/rc.local
It’sintended to be used when the cookies are actually required for the app to work. For example, to preserve your login, you need a cookie, no way around. Unfortunately, as mentioned by others, it’s often abused