Bug 355396

Summary:	dual monitor become single after reboot
Product:	[Plasma] KScreen	Reporter:	Rajinder Yadav <devguy.ca>
Component:	common	Assignee:	Daniel Vrátil <dvratil>
Status:	RESOLVED WORKSFORME
Severity:	major	CC:	ashl1future, eseifert, nate, noe.tim, raist356, sebas, theswanted, thnk35
Priority:	NOR	Keywords:	triaged, usability
Version First Reported In:	5.4.2
Target Milestone:	---
Platform:	Kubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Rajinder Yadav 2015-11-15 22:12:25 UTC

This happen sometimes, but has happen more than one for me.
After I reboot I will notice that my dual monitor setup has switch to single monitor mode( both monitor show the same thing, screen size is reduced)
When I open the monitor setting I only see 1 monitor, this is a bug!!!
I didn't realize the one of the monitor was overlay on top of the 2nd monitor in the settings dialog box, only when I decided to move one did I see the other and was able to get dual mode working again. No one in their right mind would ever think to do this!
This should never be allowed to happen, if someone wants this effect, there should be some other setting visible on the same page to say mirror monitors or something like this.
I am using kubuntu 15.10

Comment 1 Tim 2015-12-16 11:55:37 UTC

Exactly the same problem. With 2 screens, at start, the configuration reseted switching from "extended" mode to "monitors show the same thing" mode. 
Not happen each time, but often.

When I switch back in kscreen from "monitors show the same thing" to "extended mode" the configuration of the second screen is reestablished (panel, plasmoids...).

Using Plasma 5.5 on openSUSE Leap 42.1.

Best regards

Comment 2 Alexey Shildyakov 2016-03-22 07:11:46 UTC

Possibly duplicate of the bug 346961 or bug 354437

Comment 3 Jules RANDOLPH 2016-04-25 23:13:25 UTC

I can confirm this (kde plasma 5.5 on kubuntu 16.04).

Comment 4 Thierry 2016-05-08 07:37:22 UTC

Hi!
Same problem.
The dual screen configuration is not preserved. Only disabling kscreen permits (System →  Start and Stop Background Services → Service KScreen 2).

My config:
    KDE Plasma: 5.6.3
    KDE Frameworks: 5.21.0
    Qt: 5.6.0
    Kernel: 4.1.20-11-default
    Nvidia drivers: 361.42

Comment 5 Morbid 2017-11-11 22:16:59 UTC

Screens become one, or laptop screen gets disabled.
Version: 5.11.3
Qt version: 5.9.2
System: ArchLinux
Kernel: 4.13.11
Graphics: nVidia 387.22

Comment 6 Morbid 2017-12-20 00:19:19 UTC

The same situation. For 2 years already.
Manjaro
Plasma: 5.11.4
Linux 4.14.5
nVidia-bumblebee, Intel used for Plasma.
If there is any other information needed then please do contact me. I will try helping as much as I can.

Comment 7 Sebastian Kügler 2018-01-09 11:42:13 UTC

@morbid: Could you attach the information outlined in https://community.kde.org/Solid/Projects/ScreenManagement#Debugging_Information please?

Comment 8 Sebastian Kügler 2018-01-11 15:41:40 UTC

Could you guys also check whether this problem exists if you use the nouveau driver?

Comment 9 Andrew Crouthamel 2018-09-28 03:15:44 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

Comment 10 Andrew Crouthamel 2018-10-29 02:23:40 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!