Bug 339559

Summary:	Disabling a display device created extended desktop on primary device
Product:	[Applications] systemsettings	Reporter:	DrSlony <bugs>
Component:	kcm_randr	Assignee:	Unassigned bugs <unassigned-bugs-null>
Status:	RESOLVED UNMAINTAINED
Severity:	normal	CC:	bugs, dvratil, hbock
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description DrSlony 2014-10-01 06:55:29 UTC

The Display module in System Settings shows my primary laptop screen as LVDS-0 and my TV as HDMI-0. I run my laptop at 1920x1080, the native resolution, and when I hook the TV up I set it as 1920x1080, clone of LVDS-0. When I disable the TV by setting "size" to "disabled", I am left with an extended desktop on my laptop by what looks like a pixel or two. When I move the mouse cursor to the right screen edge, the whole desktop scrolls by one or two pixels. Same for the other edges.

I have to open Nvidia Settings and change the resolution from 1920x1080 to e.g. 1680x1050, apply, wait a few seconds for it to change, then cancel to go back to 1920x1080 without an extended desktop, every time I disconnect the TV. Very annoying.

Using 4.14.1 but the version combobox doesn't have a 4.14.1 option.

Reproducible: Always

Comment 1 DrSlony 2014-10-02 06:57:00 UTC

When I wrote this report, I only had the old "Display" module installed. Now I installed kscreen-1.0.71 and libkscreen-1.0.5.

Using kscreen I no longer experience the extended desktop problem, though I would wait a few days before closing the report as the problem with the old Display module did not happen 100% of the time.

Comment 2 Christoph Feck 2014-10-14 16:06:06 UTC

I have reassigned to old krandr component, but expect those to be closed as unmaintained.

Comment 3 DrSlony 2014-10-14 18:52:13 UTC

As it should be - no point wasting time on obsolete software.
I've hooked up an external display using kscreen many times now and haven't experienced this bug a single time. :)

Comment 4 David Edmundson 2015-01-22 12:08:08 UTC

Thanks for reporting your bug.

Since reporting Krandr has since been replaced by KScreen. It is available in the Plasma 4 series, and is default in Plasma 5 onwards.

I hope this solves your issue. If you still have a problem after upgrading please reopen a new bug under kscreen.

Thanks