Mouse pointer at left edge sometimes cannot click on menu

[d01010101]

There are some intermittent problems when clicking on the "LM" menu when the mouse cursor is at the leftmost column. Sometimes it works, sometimes it doesn't.

Move the pointer to any row above the bottom one. Then move the mouse horizontally to the left, even if it is already at the leftmost column, without changing the row. The general feeling it that the button is somehow "buggy" and so sometimes needs to be clicked twice.

Happens both on my desktop/mouse (MATE version 1.26.0-1, Linux Mint 21.1) and on my old laptop/pad (Linux Mint 21.2).

[balazs-endresz]

Some more details here: https://ubuntu-mate.community/t/some-pixels-dont-capture-click-and-hover-events-at-the-edge-of-the-screen/26251 But I've simply ended up moving the menu to the right corner.

[wmzart]

The workaround here: #940 had the side effect of crashing plank dock, when changing the order of icons.

What fixed it in my case was patching xorg-server:

• https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1795135
• https://ubuntu-mate.community/t/tip-to-fix-un-clickable-menu-and-show-desktop-buttons/19928
• https://bugs.launchpad.net/plank/+bug/1505440
• https://bugs.launchpad.net/plank/+bug/1828002
• https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1451

I wrote a script that creates a patched deb installation file in a chroot environment:

https://github.com/wmzart/system_scripts/blob/main/patch_xorg_server.sh

This might be an option for others who are struggling with the same problem of not being able to get a response when clicking on the very top row.

[balazs-endresz]

@wmzart Thank you, that fixed it for me too!

[lukefromdc]

If this is a GTK bug we can't fix it here. Leaving it open so others can more easily find this.

[wmzart]

Probably not a GTK bug, but an xorg-xserver bug instead. Please see here: https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1451