I am running 64-bit Ubuntu 14.04.1 and do not have that problem.

But the mouse sensitivity and/or acceleration is way too high and the jumpyness is unpleasant for me and apparently nausiating for others. So until they get some control options/adjustments, this game is not quite ready for prime time. The Talos Principle had the same overly jump defaults, but at least that has the ability to adjust FOV and mouse sensitivity to smooth things out, even if mouse acceleration cannot be disabled in that game.

yeah, mint 17.1 user here. there is no menu.. so I can't adjust the mouse sensitivity(which is WAYYYY too high)

What if use my dualshock4? Anyone knows it works?

Lukaso,
Ever find a solution? My game negated any mouse control at all once I responded to the "clock" in the park. From then on, I had to navigate around looking for the blue flower using only WAS and D. I couldn't turn around, look from side to side or look up and down! Aaaagh! If I wanted to see behind me, I had to back up to the furthest wall then scroll from side to side, then move forward and scroll again. All the while, my screen would slowly begin to rotate until I was almost inverted. To be honest, I began to think it was part of the gameplay... a very ANNOYING part of gameplay.

Is this the kind of problem you've encountered?

Originally posted by Lukaso:

I can't play the game. When it begins, my vision is looking up, I can't control my character. I believe it is a problem with the mouse. I'm a Linux user. Help me, please!

same problem here

Agent C,
I decided to try it one last time in hopes that the glitch would right itself. Fortunately, it did. I can't say whether I'll get another lockup down the road but the game seems to be playing properly for the time being. : /

Originally posted by Lukaso:

I can't play the game. When it begins, my vision is looking up, I can't control my character. I believe it is a problem with the mouse. I'm a Linux user. Help me, please!

Same for me...

Originally posted by Agent Cogne:

Originally posted by Lukaso:

I can't play the game. When it begins, my vision is looking up, I can't control my character. I believe it is a problem with the mouse. I'm a Linux user. Help me, please!

same problem here

Same here.

yeah for me too... :/ do all linux mint users have this problem?

Originally posted by sky90po:

Originally posted by Agent Cogne:

same problem here

Same here.

Same problem. I have kubuntu 15.04 64-bit.

Same problem, with kubuntu.
No clue what the problem is.
The thing is, it worked once before...

Same problem on gentoo/gnome3. Totally unplayable. Mouselook is uncontrollable. All controls including keyboard require to minimize and restore window to even gain that control for a half of second.

Same problem on Fedora. All input ignored until you alt-tab out of the game.

I took the white pawn and now nothing happens.I can't find fire

confirmed, same problem here (ubuntu 15.04 64bit)