Bug 455723

Summary:	When using 2 monitors, you'll be required to place your fingerprint twice.
Product:	[Plasma] kscreenlocker	Reporter:	Daniil <zcy>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	awacha, bhush94, kde, nate
Priority:	NOR
Version:	5.25.0
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Daniil 2022-06-21 14:21:30 UTC

SUMMARY
***
When trying to unlock screen with a fingerprint whilst having two monitors connected to a device, you'll be required to enter your fingerprint twice. Once second monitor disconnected, everything works as expected.
***

STEPS TO REPRODUCE
1. Connect second monitor to a device.
2. Lock the screen
3. Enter your fingerprint

OBSERVED RESULT
Prompt to unlock is shown, pressing "Unlock" button does nothing until you enter your fingerprint second time.
Demo: https://www.youtube.com/watch?v=x9SVBVCIu24

EXPECTED RESULT
Prompt to unlock is shown, pressing "Unlock" button would unlock the screen.

SOFTWARE/OS VERSIONS
KDE Neon 5.25 User Edition
KDE Plasma Version: 5.25.0
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.4

Comment 1 Daniil 2022-06-22 22:07:47 UTC

Additional notes: When using 3 montiors, you're required to enter fingerprint 3 times. It is also broken when you mirror/duplicate screens.

Comment 2 Nate Graham 2022-06-29 16:59:50 UTC

Cannot reproduce on Wayland, when I plug in an external HDMI monitor into my laptop and lock the screen, I only have to swipe my fingerprint once.

Comment 3 András Wacha 2022-07-30 18:48:29 UTC

Same here, only I use a Yubikey for logging in and using two displays, on Xorg. When the password entry screen is shown, the Yubikey starts to flash as expected, prompting for authentication. But when it succeeds, an "Unlock" button is shown, and the Yubikey starts flashing once again. If I press it a second time, another Unlock button appears, which I can press to let me in. If I press the first Unlock button, I get a completely black screen and cannot do anything until I authenticate via the Yubikey.
I use Plasma version 5.25.3.1-2 on Arch, KDE frameworks 5.96.0, Qt 5.15.5. Hope this helps.

Comment 4 Nate Graham 2022-08-01 15:57:34 UTC


*** This bug has been marked as a duplicate of bug 455380 ***