protonscr

Multitouch on a touchscreen produces a ghost touch at the geometric center of the real touch points

protonclosed
ValveSoftware/Proton#6015 · opened 2022-07-20 by UlyssesZh · updated 2022-09-28 · 1 comments · github
UUlyssesZh 2022-07-20 github

I use the experimental version of proton (today is 7/21/2022). My OS is Ubuntu 20.04. The windowing system is X11.
I found this bug in Malody V when playing it with a touchscreen (Smartisan TNT go). Multitouch on a touchscreen always produces a ghost touch at the geometric center of the real touch points.
IMG_20220720_215249
I am sure it is not the bug of my device or driver, because xinput test, evtest etc. shows touch input events correctly, and I have never seen the bug on my computer before. However, I am not sure whether it is Proton's bug or the game's bug (because I do not have any other games), so I just reported the bug to both places.
I hope Proton's developer team can test more on this bug.

UUlyssesZh 2022-09-28 github

Actually found that this is the game's fault, not Proton's.

Nothing extracted yet.