From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Yariv <oigevald+kernel@gmail.com>
Cc: linux-input@vger.kernel.org
Subject: Re: PROBLEM: Apple external Trackpad event timestamps are jittery (regression)
Date: Mon, 11 May 2020 13:11:18 -0700 [thread overview]
Message-ID: <20200511201118.GW89269@dtor-ws> (raw)
In-Reply-To: <CAEwx+QrfLk4SR=yn4Df3rD_Lm0Xht1hgAi4szmOTU1nkFhMwhw@mail.gmail.com>
Hi,
On Mon, May 11, 2020 at 09:18:15AM +0300, Yariv wrote:
> Using a vanilla installation of Ubuntu 20.04 (kernel v5.4), the
> timestamps of input events from my Apple "Magic Trackpad" - 1st
> generation, connected over Bluetooth - are jittery.
> This is a kernel regression. I bisected the bug.
Do you see the same jitter when connected over USB? Can you also see if
there is similar jitter when you parse timestamps of SYN_RPEORT events
from "evtest"?
Could you post a sample of events generated by device (via evtest)?
Thanks!
--
Dmitry
next prev parent reply other threads:[~2020-05-11 20:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-11 6:18 PROBLEM: Apple external Trackpad event timestamps are jittery (regression) Yariv
2020-05-11 20:11 ` Dmitry Torokhov [this message]
2020-05-12 5:19 ` Peter Hutterer
2020-05-12 19:54 ` Yariv
2020-05-22 5:27 ` Yariv
2020-05-23 18:37 ` Dmitry Torokhov
2020-05-23 19:11 ` Yariv
2020-05-23 21:18 ` Dmitry Torokhov
2020-05-24 11:36 ` Yariv
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