Jumpy touchpad smooth scroll on Linux
Reported by
alexen...@gmail.com,
Mar 3 2016
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Issue descriptionUserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.116 Safari/537.36 Steps to reproduce the problem: 1. Update to chrome 49+ where smooth scrolling has been turned on by default 2. Head to chrome://flags and disable smooth scrolling 3. Relaunch and scroll up/down What is the expected behavior? Smooth scrolling should be disabled completely What went wrong? Scrolling is still smoothed, though a bit differently. It is really jumpy, jerks up and down a bit despite scrolling just down, not really sure what's going on. It's definitely not the same smooth scrolling as enabled, and definitely not the same as no smooth scrolling. Here is a video demonstrating this if it helps, on the left is chromium 48 (conveniently not updated to 49 yet for the purposes of this recording) and on the right is chrome 50, however the same occurs in 49 as well, both chrome and chromium https://vid.me/OKYt Did this work before? Yes Chrome version: 49.0.2623.75 Channel: stable OS Version: 4.4.3 Flash Version: Shockwave Flash 20.0 r0 I have tried this on stable, beta and dev editions and the same thing is happening there. I have a windows device also and the flag works perfectly there, so this may be something linux specific. Since my last issue was erroneously closed as a duplicate of another post: This issue is not concerning the fact that smooth scrolling got enabled by default, the issue here is that the flag to disable it isn't functioning correctly
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Mar 9 2016
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Mar 9 2016
It looks like you have a high-precision touchpad. This change also went in M49 https://codereview.chromium.org/688253002/ Can you verify that smooth scrolling is disabled when you keyboard scroll or use another mouse?
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Mar 9 2016
It does work as expected with a regular mouse, interesting. I think I can see what should be happening (scrolling with increased precision) and I'd be able to live with that as it's not on a delay like the regular smooth scrolling. The main issue I'm having is that it's quite strange with how it works, here is a video of me scrolling at a constant speed on the trackpad, yet it's jumping around a lot. https://vid.me/r2S6
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Mar 11 2016
Renaming to be more relevant. Will, could you please take a look?
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Mar 13 2016
I think that's just what your trackpad driver is outputting. Can you compare this to another app that uses xinput2? Any other app that has high resolution scrolling without smoothing will do (eg. evince).
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Mar 13 2016
Seems that may be the case, I guess I have a larger issue at hand then. Do you happen to know of a way to disable the high resolution scrolling and go back to stepped on applications like that? System wide or anything to make above chrome 48 usable
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Apr 19 2016
Closing since it seems like a trackpad driver issue rather than an issue with smooth scrolling. |
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Comment 1 by b...@chromium.org
, Mar 4 2016