From: Valentin Ignatyev <valentjedi@gmail.com>
To: Tak Kunihiro <tkk@misasa.okayama-u.ac.jp>
Cc: 29737@debbugs.gnu.org
Subject: bug#29737: 27.0.50; pixel-scroll-mode is laggy
Date: Sun, 24 Dec 2017 15:18:35 +1000 [thread overview]
Message-ID: <CAO90aWto_oODy2Em+1SzYFrvD8v3ZB_1_EHtfVjKBH9AbGtEmw@mail.gmail.com> (raw)
In-Reply-To: <20171224.112823.71840469338618559.tkk@misasa.okayama-u.ac.jp>
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I've tried these both at the same time already. As I've said - scrolling
down is a bit laggy (and it eats the CPU and turns on my fans up high). And
scroll up is much laggier. It's when I scroll slowly. If I do quick swipe -
emacs hangs and then jumps to the line when scrolling must end.
On Sun, Dec 24, 2017 at 12:28 PM, Tak Kunihiro <tkk@misasa.okayama-u.ac.jp>
wrote:
> > When I slowly start scrolling, it scrolls for a while and then jumps
> > about 10 rows at the time, then scrolls a bit more and jumps again
> > If I swipe my trackpad too fast, emacs instantly eats 100% CPU and
> > hangs infinitely (it hangs not every time, but rather once in a
> > while. It can just go to the end of the file).
> >
> > If I scroll with Ctrl-key as Eli suggested in the first thread mail,
> > it scrolls better than before the fix, but I still see this lag
> > pattern (scroll a bit and then jump), but in the smaller scale and
> > it doesn't kill emacs. Setting mouse-wheel-progressive-speed to nil
> > seem to make no difference.
> >
> > Btw, while I do use macbook, my OS is Arch Linux here. Just tried
> > it on mac os. pixel-scroll-mode works much better here though there
> > is still small noticeable lag. And also I can see that scroll up
> > lagging more than scroll down.
>
> Can you try scrolling with following configuration?
>
> (setq mouse-wheel-scroll-amount '(1 ((shift) . 5) ((control))))
> (setq mouse-wheel-progressive-speed nil)
>
> Those are two that are already suggested by Eli. Please try both at
> the same time.
>
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next prev parent reply other threads:[~2017-12-24 5:18 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-16 17:55 bug#29737: 27.0.50; pixel-scroll-mode is laggy Valentin Ignatyev
2017-12-16 18:30 ` Eli Zaretskii
[not found] ` <CAO90aWvmqMg=wkt4YyqE8kDP_BNZjAih7AEdyP-Zt74OydpUHA@mail.gmail.com>
2017-12-16 19:33 ` Eli Zaretskii
2017-12-16 19:35 ` Valentin Ignatyev
2017-12-17 2:00 ` Tak Kunihiro
2017-12-22 10:22 ` Eli Zaretskii
2017-12-23 3:18 ` Tak Kunihiro
2017-12-23 9:20 ` Eli Zaretskii
2017-12-23 11:30 ` Valentin Ignatyev
2017-12-23 11:53 ` Valentin Ignatyev
2017-12-24 2:28 ` Tak Kunihiro
2017-12-24 5:18 ` Valentin Ignatyev [this message]
2017-12-25 3:48 ` Tak Kunihiro
2018-01-01 0:58 ` Tak Kunihiro
2018-01-06 17:43 ` Eli Zaretskii
2018-01-07 2:06 ` Tak Kunihiro
2018-01-07 7:19 ` Eli Zaretskii
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