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Re: Mouse clicks "delayed" until movement

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On 12/05/26 at 04:41, Max Nikulin wrote:
> On 12/05/2026 1:29 am, Franco Martelli wrote:
>> ~$ sudo modinfo psmouse
>> …
>> 1 = enabled, 0 = disabled (default). (bool)
>> parm:           resetafter:Reset device after so many bad packets (0 = 
>> never). (uint)
>> parm:           resync_time:How long can mouse stay idle before 
>> forcing resync (in seconds, 0 = never). (uint)
> 
> It looks interesting, but I would not exclude an issue with the lower 
> level i8042 rather than with generic psmouse. I am unsure if it is 
> possible to unload it and load again (perhaps from a VT, not from GUI 
> session).
> 
> Debug logging for the module might be tried, however it should be rather 
> verbose. I have no idea if it is possible to dump internal module state 
> to inspect it with debugger.
> 

checking the documentation into the Linux kernel sources (version 
6.12.85) for the i8042 driver are available the following kernel parameters:

         i8042.debug     [HW] Toggle i8042 debug mode
         i8042.unmask_kbd_data
                         [HW] Enable printing of interrupt data from the 
KBD port
                              (disabled by default, and as a pre-condition
                              requires that i8042.debug=1 be enabled)
         i8042.direct    [HW] Put keyboard port into non-translated mode
         i8042.dumbkbd   [HW] Pretend that controller can only read data 
from
                              keyboard and cannot control its state
                              (Don't attempt to blink the leds)
         i8042.noaux     [HW] Don't check for auxiliary (== mouse) port
         i8042.nokbd     [HW] Don't check/create keyboard port
         i8042.noloop    [HW] Disable the AUX Loopback command while probing
                              for the AUX port
         i8042.nomux     [HW] Don't check presence of an active multiplexing
                              controller
         i8042.nopnp     [HW] Don't use ACPIPnP / PnPBIOS to discover 
KBD/AUX
                              controllers
         i8042.notimeout [HW] Ignore timeout condition signalled by 
controller
         i8042.reset     [HW] Reset the controller during init, cleanup and
                              suspend-to-ram transitions, only during s2r
                              transitions, or never reset
                         Format: { 1 | Y | y | 0 | N | n }
                         1, Y, y: always reset controller
                         0, N, n: don't ever reset controller
                         Default: only on s2r transitions on x86; most other
                         architectures force reset to be always executed
         i8042.unlock    [HW] Unlock (ignore) the keylock
         i8042.kbdreset  [HW] Reset device connected to KBD port
         i8042.probe_defer
                         [HW] Allow deferred probing upon i8042 probe errors

maybe changing in "/etc/default/grub" the line:

GRUB_CMDLINE_LINUX="i8042.debug=1 i8042.reset=0"

should provide further information hopeful useful, but I don't think 
that other parameters are useless.

A search with AI suggests to specify also "i8042.noloop i8042.nomux", HTH.

kind regards,
-- 
Franco Martelli

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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

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