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I want to use my mouse's middle-button in the TTY, so I tried to debug it. When I perform a middle-click, it doesn't show up in evtest /dev/input/eventN. All other actions show up, so I'm in the right event. When I use xev it's the same: Mouse movements work, left and right button shows up, but upon clicking the middle button, nothing is reported.

However the button does work in GTK+. I tested it in Mozilla Firefox, mate-terminal and the PDF viewer Atril.

How can I debug what's going wrong here? What are potential reasons it does work in GTK+? How can I fix it for the TTY.

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  • The only other way I can think of to check the button's input is with xbindkeys -k. Might be worth a shot. Commented Sep 24 at 21:11
  • This only detects keys for me and doesn't reject to any mouse or touchpad I tried. Commented Sep 25 at 11:02
  • s/reject/react/ Commented Sep 25 at 11:08
  • What does xinput say? Run xinput and get the mouse Device ID. Then, xinput test [device ID]. If you still have nothing, it's likely window manager/compositor settings that has control of mouse button behavior, preventing "grabbing". If the mouse is using /dev/input/mice you can use cat /dev/input/mice to check the button for a response. It output's a bunch of gibberish, but will show something if the button responds. Commented Sep 25 at 14:25
  • It's the same with xinput: movement – motion a[0]=319, left mouse button – button press 1 button release 1, right mouse button – button press 3 button release 3, middle mouse button – nothing. Commented Oct 2 at 21:39

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