Linux – Looking for “Camera Mouse” for Linux

Solution to issue: Not all input packages installed for xserver.

If you are running into this issue of mouse and keyboard not working, make sure you have all the xserver packages installed. Sometimes this issue happens when not all input packages are installed.

To fix this issue quickly, install the metapackage xorg:

apt install xorg

This meta package makes sure that all the required packages are installed for a fully functioning xserver system. This is current for Debian Stretch (as of this writing) This is a very old post, but I came across it with the same problem and this solution worked for me.

It is a complicated thing, taking into account the time domain, the infinite possibilities for an acceleration (or velocity) curve, framerate- or delay-independent behavior, etc.

Matching behavior with closed-source OS'es or drivers is nigh-impossible, but X.org provides you with ample choices for your taste, provided you take the time to read the documentation or the source.

Non-accelerated behavior (flat acceleration curve, linear velocity curve, linear mouse response or N pixels per 1mm of movement) is the only truly universal, easy-to-adapt and easy-to-adopt behavior. Ironically, it's also what most systems lack or make very hard to get. (See this open question, for example.)

Assuming you want linear response, I'll direct you back at the question you've linked.