[kde] [Bug 464846] New: Multi-monitor setup trick sddm

[Gergely HORVÁTH]

https://bugs.kde.org/show_bug.cgi?id=464846

            Bug ID: 464846
           Summary: Multi-monitor setup trick sddm
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: horvathg.1988 at gmail.com
  Target Milestone: ---

Hi,

when having a multi-monitor setup, sddm shows the initial login screen on both
windows, and when I start typing only one of the textfields gets populated.
After hitting ENTER, the password typed into the textbox selected is used. So
if I type my password into one textfield, select the other one and press ENTER
my password is rejected.

Real world use-case:
- system boots with multi-monitor, sddm focuses one of the textboxes, let's say
on screen A.
- I type my password into the already focused textbox.
- Than I reach for the mouse and shake it to find the cursor.
- If I shake it too much, it gets to the other screen, onto screen B.
- I change between X11 and Wayland (typically from X11 to Wayland) on the
drop-down menu of screen B as it is closer to my cursor.
- Now my cursor is closer to the textbox of screen B, so I click on it and
press ENTER.
- My login attempt fails.

I see multiple solutions:
1) to synchronize all the textboxes on all the screen, so when typing into one,
the others gets populated with the same text. This way, it doesn't matter where
I want to login.
2)  When trying to login, check all the typed textbox password for login. This
may ease brute-force attempts but I'm not sure if that is an actual problem.

Thanks if you look into it!
Best regards,
Gergely

Operating System: Arch Linux
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.8
Kernel Version: 6.1.6-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i7-11370H @ 3.30GHz
Memory: 15,4 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics
Manufacturer: TUXEDO
Product Name: TUXEDO InfinityBook Pro 14 Gen6

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