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Re: Mouse clicks "delayed" until movement

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On 4/24/26 20:00, Stefan Monnier wrote:
> Since last reboot, my trusty laptop has the following annoying behavior:
> mouse clicks don't take effect until the next event (typically moving
> the mouse).
>
> I checked with `xev` and indeed after a mouse click I see the following
> output:
>
>      [...]
>
>      MotionNotify event, serial 35, synthetic NO, window 0x3800001,
>          root 0xf6, subw 0x0, time 21834559, (83,68), root:(369,570),
>          state 0x0, is_hint 0, same_screen YES
>      
>      ButtonPress event, serial 35, synthetic NO, window 0x3800001,
>          root 0xf6, subw 0x0, time 21836087, (83,68), root:(369,570),
>          state 0x0, button 1, same_screen YES
>
> and it sits there without showing any "ButtonRelease" even though
> I definitely released the mouse button.  When I then press a key
> I finally see the ButtonRelease followed by the key press/release:
>
>      ButtonRelease event, serial 35, synthetic NO, window 0x3800001,
>          root 0xf6, subw 0x0, time 21837777, (83,68), root:(369,570),
>          state 0x100, button 1, same_screen YES
>      
>      KeyPress event, serial 35, synthetic NO, window 0x3800001,
>          root 0xf6, subw 0x0, time 21837777, (83,68), root:(369,570),
>          state 0x0, keycode 111 (keysym 0xff52, Up), same_screen YES,
>          XLookupString gives 0 bytes:
>          XmbLookupString gives 0 bytes:
>          XFilterEvent returns: False
>      
>      KeyRelease event, serial 38, synthetic NO, window 0x3800001,
>          root 0xf6, subw 0x0, time 21837880, (83,68), root:(369,570),
>          state 0x0, keycode 111 (keysym 0xff52, Up), same_screen YES,
>          XLookupString gives 0 bytes:
>          XFilterEvent returns: False
>
> Any idea where the problem might be coming from, how to track it down,
> or (even better) fix it?
>
> This is a Thinkpad T61 running Debian testing, with XFCE running
> on Xorg.
>
>
> === Stefan
>
The funky behavior like this almost always leads to some buggy 
power-saving feature.
Try to disable power-saving within a kernel module which your mouse use.
If it is on usb bus:
$ echo -1 | sudo tee /sys/module/usbcore/parameters/autosuspend


-- 

  With kindest regards, Alexander.

  Debian - The universal operating system
  https://www.debian.org

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Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-04-24 17:10 +0200
  Re: Mouse clicks "delayed" until movement The Wanderer <wanderer@fastmail.fm> - 2026-04-24 19:40 +0200
  Re: Mouse clicks "delayed" until movement "Alexander V. Makartsev" <avbetev@gmail.com> - 2026-04-24 20:00 +0200
    Re: Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-04-28 22:00 +0200
      Re: Mouse clicks "delayed" until movement nwe <nwe@gitcoding.net> - 2026-04-28 22:20 +0200
        Re: Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-04-28 22:50 +0200
          Re: Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-04-28 23:20 +0200
            Re: Mouse clicks "delayed" until movement Franco Martelli <martellif67@gmail.com> - 2026-04-29 21:20 +0200
            Re: Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-05-01 00:30 +0200
              Re: Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-05-09 04:40 +0200
                Re: Mouse clicks "delayed" until movement Max Nikulin <manikulin@gmail.com> - 2026-05-10 05:30 +0200
                Re: Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-05-10 17:20 +0200
  Re: Mouse clicks "delayed" until movement nwe <nwe@gitcoding.net> - 2026-05-10 07:10 +0200
    Re: Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-05-10 17:30 +0200
      Re: Mouse clicks "delayed" until movement <tomas@tuxteam.de> - 2026-05-10 18:30 +0200
        Re: Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-05-11 04:30 +0200
          Re: Mouse clicks "delayed" until movement tomas@tuxteam.de - 2026-05-11 08:30 +0200
            Re: Mouse clicks "delayed" until movement Franco Martelli <martellif67@gmail.com> - 2026-05-11 20:30 +0200
              Re: Mouse clicks "delayed" until movement Max Nikulin <manikulin@gmail.com> - 2026-05-12 05:00 +0200
                Re: Mouse clicks "delayed" until movement Franco Martelli <martellif67@gmail.com> - 2026-05-12 21:50 +0200
                Re: Mouse clicks "delayed" until movement Stefan Monnier <monnier@iro.umontreal.ca> - 2026-05-14 21:10 +0200
                Re: Mouse clicks "delayed" until movement <tomas@tuxteam.de> - 2026-05-15 08:30 +0200
                Re: Mouse clicks "delayed" until movement Max Nikulin <manikulin@gmail.com> - 2026-05-18 05:50 +0200

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