The factor is 1/7.
Use this formula: 1/7 * speed
Actually Continuum is a feature that switches between windowed desktop and fullscreen mobile modes when you dock or undock your device.
See this demo video.
Do you mind if I ask what flavor of Linux you were running, what the desktop(s) were and what were the issues you were getting?
That is usually followed by "ah yes, that particular distro is known to be broken, no wonder you were having problems".
There have been various issues like the GP comment described, but I won't write a long rant about them. Right now, if I sent a letter to Santa Claus and wanted to have just one issue solved, it would be the problem where the laptop brightness goes in multiple steps under Debian-based distros such as Mint and Ubuntu. Apparently this is because there can be multiple listeners to the backlight event (GPU driver, ACPI driver, OS, BIOS...) and they all do the adjustment without consuming the event. Anyone can observe this problem on a laptop. This is so basic stuff that it cannot be consistently broken like this.
Fix the brightness adjustment. Doooo it. No, I won't do the engineering work to fix it. I have other problems to solve than personally fixing my OS bugs. Windows works fine.
He has not acquired a fortune; the fortune has acquired him. -- Bion