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GrapheneOS / os-issue-tracker

Issue tracker for GrapheneOS Android Open Source Project hardening work. Standalone projects like Auditor, AttestationServer and hardened_malloc have their own dedicated trackers.
https://grapheneos.org/
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Swipe inertia or friction has become excessive recently #4069

Open graphener opened 1 month ago

graphener commented 1 month ago

A month or so ago, I noticed that it had become much harder to close an app by swiping it up and throwing it off the upper edge of the screen. It's as though the friction in the Newtonian physics model increased massively across some update. I've tried increasing/decreasing touch sensitivity. Nothing I try seems to work. It's so bad that I literally can't close apps sometimes (but weirdly, only sometimes) unless I clear their storage or restart. I'm not even using a screen protector, so this shouldn't be a touch issue.

thestinger commented 1 month ago

We don't change anything like this.

graphener commented 1 month ago

Thanks for confirming as upstream. Definitely it's real. Happens everyday, but frustratingly with no rhyme or reason. Empirically seems like maybe changing partitions increases the probability of it happening. That could make sense because it would cause temporary latency spikes due to cache thrashing, which in theory could interfere with friction modeling. Then again, it can persist for minutes on end, and maybe longer. Then suddenly everything is fine. Bizarre!