Bug 1294376
| Summary: | Two finger scroll feels lagging when using Gnome on Wayland | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Pavel Sklenak <pavel.sklenak> | ||||
| Component: | gtk3 | Assignee: | Matthias Clasen <mclasen> | ||||
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 23 | CC: | ccecchi, mclasen, pavel.sklenak, peter.hutterer | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2016-12-20 17:25:52 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
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Let me add my use case: I read a webpage and scroll as I read so that the text keeps about at the same position on the screen. Hope it makes it clearer about what I mean. Thank you for your feedback. measured in mm, how far do you think that dead zone is? I don't think that's a libinput bug, we have a dead zone to distinguish between scroll and gestures, but you should see the same zone on both. I am not sure, does acceleration/deceleration apply to scrolling too? The pointer speed can be adjusted in preferences and the same setting works fine in both X11/wayland. Difference is in the scrolling behavior. The scrolling on wayland is visually much faster. Perhaps that's the reason why it feels lagging when I try to scroll along with reading, thus making even smaller movements with my fingers. I'm punting this to gtk, I'm pretty sure that's the best component to handle this. The cause of this is that we're using slightly different coordinate systems in wayland vs X for scrolling. In X, it's effectively in "scroll units" and it's up to the client to interpret those. In wayland, the scroll motion is in the same coordinate system as the pointer movement. I think this is simply something gtk/gdk needs to handle depending on the backend. This message is a reminder that Fedora 23 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 23. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '23'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 23 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. |
Created attachment 1109884 [details] device details (evemu-describe, xinput list-props) Two finger scroll provides immediate response with Gnome on X11. On Wayland there is a kind of an initial lag before the actual scrolling starts. I like much more the X behavior. I am using libinput 1.1.4-1-fc23.