Arch Linux

lzs

Member

Registered: 2008-01-23

Posts: 39

[Solved] Kwin 5.10.0 breaking mouse clicking sometimes

Hi,
after upgrading Kwin mouse clicks sometimes don't register in games, e. g. Warsow. Maybe 1 in 10 won't work.
It also appears to keep the state of the button then. E. g. when using a mouse button to shoot, shooting won't stop after having depressed it, when the fault happens.

Clicking doesnt't seem to be affected on the desktop at all and downgrading Kwin fixes the problem in games again.
Games tested were Warsow and IOQuake3.

Can anyone reproduce this?

EDIT: Solved

Last edited by lzs (2017-06-05 11:34:58)

seth

Member

Registered: 2012-09-03

Posts: 51,029

Re: [Solved] Kwin 5.10.0 breaking mouse clicking sometimes

wayland?

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lzs

Member

Registered: 2008-01-23

Posts: 39

Re: [Solved] Kwin 5.10.0 breaking mouse clicking sometimes

No, X11.

seth

Member

Registered: 2012-09-03

Posts: 51,029

Re: [Solved] Kwin 5.10.0 breaking mouse clicking sometimes

Then kwin is likely a red herring, the game (ioquake3 for one) grab input. What might be possible is a messup on Xi2 and libinput.
=> Do you use xf86-input-libinput and does the problem remain with xf86-input-evdev?

/etc/X11/xorg.conf.d/10-mouse.conf

Section "InputClass"
	Identifier "evdev pointer catchall"
	MatchIsPointer "on"
	MatchDevicePath "/dev/input/event*"
	Driver		"evdev"
EndSection

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lzs

Member

Registered: 2008-01-23

Posts: 39

Re: [Solved] Kwin 5.10.0 breaking mouse clicking sometimes

I was using the "mouse" driver.
https://www.x.org/archive/current/doc/m … rv.4.xhtml

It doesn't work with evdev either.

EDIT: Old Xorg log files state that the server was already using evdev for the mouse before.

Last edited by lzs (2017-06-05 10:42:24)

Ropid

Member

Registered: 2015-03-09

Posts: 1,069

Re: [Solved] Kwin 5.10.0 breaking mouse clicking sometimes

Do you use a panel set to "auto-hide" or "windows can cover"? I remember when I used KDE/Plasma 5 in the past in the earliest versions of Plasma 5, games didn't see the mouse in a one pixel wide area where I had my panel and that caused issues like you describe.

lzs

Member

Registered: 2008-01-23

Posts: 39

Re: [Solved] Kwin 5.10.0 breaking mouse clicking sometimes

Yes, I'm using Cairo-Dock with auto-hide, but disabling it doesn't make a difference.

lzs

Member

Registered: 2008-01-23

Posts: 39

Re: [Solved] Kwin 5.10.0 breaking mouse clicking sometimes

There is a new bug report on kde.org that describes this behaviour.
https://bugs.kde.org/show_bug.cgi?id=380846
Works fine in windowed mode here.
There seem to be already a couple of related bugreports there, that are describing the 1 pixel wide area, that Ropid mentioned.

Thanks for your input.