Mouse moves at an angle

deppchen · n00b Joined: 09 Aug 2016 Posts: 1

Hi,

First of all: I'm generally a gentoo noob and still have to learn a lot, my boyfriend (which is an IT-Student) installed it for me and helps me whenever i have a problem a can't yet solve on my own. OH, and i hope this is the right place to post this.

But now i have a problem where we both couldn't find a solution, I bought a new mouse. When i plugged it in everything worked, but then i realised that the curser movement and the movement of the actual mouse are rotated by some degrees (i think it's something between 25 and 35 degrees). Which means if i move my mouse straight to the left my cursor moves rather to the top left.

Is there any way to fix this? I spent some time on google but found nothing.
I'm thankfull for everything that might help with this (even a good buzzword to google could help)

PS: Sorry for any spelling or grammar mistakes since english is not my first language ^^'

guitou · Guru Joined: 02 Oct 2003 Posts: 534 Location: France

Hello.

To get it fixed, you should rotate your screen accordingly :p

Sorry, could not resist, and sorry not to have a relevant answer too...
More seriously, if you can plug in another mouse without experiencing the same bug, best guess is that your brand new mouse is just broken.

++
GI)

NeddySeagoon · Posted: Tue Aug 09, 2016 6:41 pm Post subject:

deppchen,

Welcome to Gentoo.

The X and Y axis in the mouse are fixed when it is manufactured. Do this experiment with your mouse.
Place it on the mouse mat normally.
Move it towards the top of the mat ... observe the cursor moves towards the top of the screen.
Confirm for the other four edges of the mat/screen.
No surprises there.

Pick up the mouse and turn it through 1/4 turn so that the 'up' for the mouse faces the right edge of the pad.
Move the mouse from side to side on the mouse pad. Notice the screen cursor moves up and down.
No surprises there either I suspect. That's an extreme form of pointing error.

I suspect that you are not holding the mouse the way it was designed to be held. Either that or its damaged,
so you see a pointing error less than the demonstration above.

There is another explanation, if your system has a touch screen and the mouse is detected as a part of the touch interface.
Touch screens are calibrated in software, to reduce alignment and linearity errors. If these corrections were applied to mouse movements, it could produce the symptoms you report. However, 25 deg is a huge error for a touch screen.

Play with xev to see what is reported to Xorg
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

Ant P. · Watchman Joined: 18 Apr 2009 Posts: 6920

I'm going to assume your mouse really is just defective here, maybe the sensor was put in at the wrong angle. Who knows.

Run xinput list. Note the ID number next to your mouse.
With that number, run xinput list-props $ID. You should see this line:

Jaglover · Posted: Tue Aug 09, 2016 7:39 pm Post subject:

This mouse may be politically correct.

_________________
My Gentoo installation notes.
Please learn how to denote units correctly!