Fix touchpad scroll sensitivity on Wayland again [chromium/src : main]

0 views

Skip to first unread message

Thomas Anderson (Gerrit)

unread,

Aug 4, 2026, 11:27:54 AM (9 days ago) Aug 4

to Kevin Kou, Jamie Walch, Kramer Ge, Orko Garai, Chromium LUCI CQ, android-bu...@system.gserviceaccount.com, max+watc...@igalia.com, ozone-...@chromium.org, nickdiego+wa...@igalia.com

Attention needed from Jamie Walch, Kevin Kou, Kramer Ge and Orko Garai

Thomas Anderson added 1 comment

Patchset-level comments

File-level comment, Patchset 5 (Latest):

Thomas Anderson . resolved

over to jamiewalch@

Open in Gerrit

Related details

Attention is currently required from:

Jamie Walch
Kevin Kou
Kramer Ge
Orko Garai

Submit Requirements:

Code-Coverage
Code-Owners
Code-Review
Review-Enforcement

Inspect html for hidden footers to help with email filtering. To unsubscribe visit settings.

Gerrit

satisfied_requirement

unsatisfied_requirement

open

diffy

Jamie Walch (Gerrit)

unread,

Aug 11, 2026, 3:53:57 PM (2 days ago) Aug 11

to Kevin Kou, Kramer Ge, Thomas Anderson, Orko Garai, Chromium LUCI CQ, android-bu...@system.gserviceaccount.com, max+watc...@igalia.com, ozone-...@chromium.org, nickdiego+wa...@igalia.com

Attention needed from Kevin Kou, Kramer Ge and Orko Garai

Jamie Walch added 2 comments

Patchset-level comments

File-level comment, Patchset 5 (Latest):

Thomas Anderson . unresolved

over to jamiewalch@

Jamie Walch

I don't think I'm the right person to review this code. I'm not a Wayland expert, and my last attempt to address this issue got reverted due to user complaints.

I did try out the CL to see if it felt right. I found that with this CL applied, scrolling is slower than many other apps (gnome-terminal and gedit), but comparable to some others (ptyxis and the Gnome touchpad settings test app). I would also say that with this change my trackpad makes Chrome scroll roughly as fast as I would expect from other platforms, but it's very subjective. And that's just GNOME--I wasn't able to test on anything else.

I think that this isn't really an eng decision. Can we can get some UX people to make a decision about how fast Chrome should scroll on Wayland? I think if we land this as-is we're going to get https://issues.chromium.org/issues/457478032 reopened.

File ui/ozone/common/features.cc

Line 47, Patchset 5 (Latest):// coordinates rather than being scaled by 12x.

Jamie Walch . unresolved

Did you mean 10x? That's the value of `kAxisValueScale`.

Open in Gerrit

Related details

Attention is currently required from:

Kevin Kou
Kramer Ge
Orko Garai

Submit Requirements:

Code-Coverage
Code-Owners
Code-Review

No-Unresolved-Comments

Review-Enforcement

Inspect html for hidden footers to help with email filtering. To unsubscribe visit settings.

Gerrit

satisfied_requirement

unsatisfied_requirement

open

diffy

Kevin Kou (Gerrit)

unread,

Aug 11, 2026, 8:07:10 PM (2 days ago) Aug 11

to Jamie Walch, Kramer Ge, Thomas Anderson, Orko Garai, Chromium LUCI CQ, android-bu...@system.gserviceaccount.com, max+watc...@igalia.com, ozone-...@chromium.org, nickdiego+wa...@igalia.com

Attention needed from Jamie Walch, Kramer Ge, Orko Garai and Thomas Anderson

Kevin Kou added 2 comments

Patchset-level comments

File-level comment, Patchset 5:

Thomas Anderson . unresolved

over to jamiewalch@

Jamie Walch

I don't think I'm the right person to review this code. I'm not a Wayland expert, and my last attempt to address this issue got reverted due to user complaints.
I did try out the CL to see if it felt right. I found that with this CL applied, scrolling is slower than many other apps (gnome-terminal and gedit), but comparable to some others (ptyxis and the Gnome touchpad settings test app). I would also say that with this change my trackpad makes Chrome scroll roughly as fast as I would expect from other platforms, but it's very subjective. And that's just GNOME--I wasn't able to test on anything else.
I think that this isn't really an eng decision. Can we can get some UX people to make a decision about how fast Chrome should scroll on Wayland? I think if we land this as-is we're going to get https://issues.chromium.org/issues/457478032 reopened.

Kevin Kou

I'm on the camp that it should be as fast as ChromeOS, but I understand the want/need to be more akin to Desktop Linux. However, there is no standardized framework for scrolling in Desktop Linux. As I mentioned offline, each DE has their own scroll settings and each UI framework also has their own scrolling quirks. Newer GTK versions will have different scrolling implementations than older versions of GTK (even different versions of GTK 4 will change up the scrolling!). QT also will has a different scrolling implementation. In addition, KDE has a scroll speed setting that GTK will not respect. I feel that there should be a consensus on which parameters will satisfy the most users.

File ui/ozone/common/features.cc

Line 47, Patchset 5:// coordinates rather than being scaled by 12x.

Jamie Walch . resolved

Did you mean 10x? That's the value of `kAxisValueScale`.

Kevin Kou

Yes

Open in Gerrit

Related details

Attention is currently required from:

Jamie Walch
Kramer Ge
Orko Garai
Thomas Anderson

Submit Requirements:

Code-Coverage
Code-Owners
Code-Review
No-Unresolved-Comments
Review-Enforcement

Inspect html for hidden footers to help with email filtering. To unsubscribe visit settings.

Gerrit

satisfied_requirement

unsatisfied_requirement

open

diffy

Reply all

Reply to author

Forward

0 new messages