Bug 430167

Summary:	Changing global scale does not work properly when typing a value directly and pressing the enter key
Product:	[Applications] systemsettings	Reporter:	Christoph Vogtländer <kde>
Component:	kcm_kscreen	Assignee:	kscreen-bugs-null <kscreen-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	nate, plasma-bugs-null
Priority:	NOR
Version First Reported In:	5.20.4
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Screencast

Description Christoph Vogtländer 2020-12-08 20:15:01 UTC

SUMMARY
Changing the global display scale (X11) only works when using the slider or by using the spin box buttons. Setting the value directly by typing a value will reset the scale to "100%" when the spin box looses focus

STEPS TO REPRODUCE
1. Set a new scale by typing e.g. "150 -> Enter"
2. The slider will move as expected, "Apply" button becomes active
3. Change focus, e.g. by clicking "Apply"

OBSERVED RESULT
The scale factor is reset to 100%


EXPECTED RESULT
The chosen scale factor should be applied

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.76.0
Qt Version: 5.15.2
Kernel Version: 5.9.12-arch1-1
OS Type: 64-bit
Processors: 4 × Intel® Core™ i5-4460 CPU @ 3.20GHz
Memory: 15.3 GiB of RAM
Graphics Processor: Mesa DRI Intel® HD Graphics 4600

Comment 1 Christoph Vogtländer 2020-12-08 20:15:46 UTC

Side note: using the scroll wheel also seems to work fine

Comment 2 Nate Graham 2020-12-09 16:01:31 UTC

Works for me. I can delete the value in the spinbox, type a new one, hit the tab or enter key, and press the Apply button and have the new value applied.

Are you using the KCM on Wayland or X11?

Comment 3 Christoph Vogtländer 2020-12-09 22:30:56 UTC

I'm using the KCM on X11

Using TAB works for me, too.

It is reproducible here when using the steps as mentioned in my initial post. More exactly:
1. Select whole text in spinbox by clicking three times
2. type new value: 150
3. press ENTER
4. click "Apply"
-> value changes back to 100% (and no info message at the top of the KCM appears as it should)

Comment 4 Christoph Vogtländer 2020-12-09 22:33:29 UTC

Changing status back to REPORTED

Comment 5 Christoph Vogtländer 2020-12-09 22:40:44 UTC

Created attachment 133958 [details]
Screencast

Add screencast to illustrate the issue

Comment 6 Nate Graham 2020-12-10 04:05:06 UTC

Can confirm with those exact steps to reproduce. Hitting the enter key seems to be the thing that makes it happen.

Comment 7 Nate Graham 2022-11-10 22:22:55 UTC

This has since been fixed.