Huge mouse-click delay

Peter Hutterer peter.hutterer at
Wed Sep 21 06:49:45 UTC 2016

On Tue, Sep 20, 2016 at 02:46:35PM +0200, martin f krafft wrote:
> also sprach Lucien Gentis <lucien.gentis at> [2016-09-20 14:39 +0200]:
> > Same problem with touch pad or USB extern mouse ?
> Good question; yes, the same problem exists with an external mouse.

that's... strange and means it's not an issue with the evdev or synaptics
driver. here's the two main things to try:

* run evemu-record on the mouse and check if you see the button events show
  up while they're delayed in X. if they work as expected, then it's not a
  kernel/hw issue.
* run xev and see if that gets the events as expected. If so, then the issue
  is in the toolkit (but judging from the rest that's not the case anyway).

any server updates recently? can you downgrade?


> It's a Logitech wireless, and I initially thought that the dongle
> might be the problem, but the delay persists even if I remove the
> dongle, and mouse clicks using the external mouse are similarly
> delayed.
> It's an X240 with that dreadful touchpad-is-all-mousebuttons
> "solution". I am just adding this because maybe the driver is
> synaptics (version 1.8.3).
> -- 
> @martinkrafft | |
> now I lay me back to sleep.
> the speaker's dull; the subject's deep.
> if he should stop before I wake,
> give me a nudge for goodness' sake.
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