[kde] [Bug 467935] New: Tablet mode screen rendering unevenly

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https://bugs.kde.org/show_bug.cgi?id=467935

            Bug ID: 467935
           Summary: Tablet mode screen rendering unevenly
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: plover40 at protonmail.com
  Target Milestone: ---

Created attachment 157700
  --> https://bugs.kde.org/attachment.cgi?id=157700&action=edit
Uneven rendering on screen

SUMMARY
Rendering is not consistent across screen width leading to slanted text when
scrolling. 

STEPS TO REPRODUCE
1. Enter tablet mode on laptop
2. Turn screen vertically  
3. Scroll up and down using touch screen

OBSERVED RESULT
The right hand side of the screen seems to render at a different time compared
to the left hand side. This makes scrolling "wobbly", where a line of text
appears to be slanted. The direction of the slant changes based on if I'm
scrolling up or scrolling down with my finger. 

A picture of this uneven rendering can be seen here in the attached picture. 

EXPECTED RESULT
Rendering is consistent across screen width when scrolling. 

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 37 6.2.8-1.surface.fc37.x86_64
KDE Plasma Version: 5.27.3
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION
OBS doesn't capture the problem, taking a video of the screen doesn't capture
it either.

I have my screen set to 60hz, however when changing it to 120hz, it becomes
noticeably better but appears to still be present. However my camera can't seem
to capture a decent picture of it compared to when configured for 60hz.

Scrolling with my finger in horizontal tablet mode doesn't have this issue as
far as I can tell.

Originally reported here:
https://github.com/linux-surface/linux-surface/issues/1107

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