Calculator opens every time I do a left click

Question

I use Ubuntu Mate 18.04. Every time I do a left-click on my mouse mate-calculator starts up. I did nothing and how can I prevent this ? Here is what happens to me.

I use Compiz if this matters

EDIT: The issue was my mouse which does not work anymore.

What menu pops up if you right-click the open desktop (i.e. wallpaper)? — Zeiss Ikon, Nov 06 '18 at 20:19
@ZeissIkon No menu is opening when I righr-click the desktop. Usually it works — Emil Engler, Nov 06 '18 at 20:20
@N0rbert I'm not able to run a terminal, everytime I left click mate-terminal in my dock the calculator starts up. The only way to access the command line is via the tty — Emil Engler, Nov 06 '18 at 20:31
@N0rbert Yes, the issue was my mouse the keybindings chnaged absolutely — Emil Engler, Nov 07 '18 at 19:44
I cleaned out my comments above and summarized our debugging process in the answer. You may want to remove your comments above. You can accept it to help future readers :) — N0rbert, Nov 07 '18 at 19:52

N0rbert · Accepted Answer · 2018-11-07T20:01:35.927

We have had long debugging session. All software components were set correctly.

So the output of

gsettings list-recursively | grep mate-calc

was empty. And

gsettings get org.mate.SettingsDaemon.plugins.media-keys calculator

returned

'XF86Calculator'

as expected.

Resetting mouse settings in MATE did not help:

gsettings reset-recursively org.mate.peripherals-mouse
gsettings reset-recursively org.mate.SettingsDaemon.plugins.mouse
dconf reset -f /org/mate/desktop/accessibility/

The Compiz Settings Manager (launched with ccsm command) do not have Button1, Button2 and Button3 mentioned in General → Commands and on Button Bindings tab.

But xev output was weird, it did not show ButtonPress and ButtonRelease as reaction on press and release of mouse buttons.

So it was a hardware issue.

Calculator opens every time I do a left click

1 Answers1