Bug 400080

Summary:	There seems to be a huge regression in multi-monitor support in 14.1
Product:	[Plasma] KScreen	Reporter:	Richard Gladman <kde>
Component:	common	Assignee:	Sebastian Kügler <sebas>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	nate
Priority:	NOR	Keywords:	triaged
Version First Reported In:	5.14.1
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Richard Gladman 2018-10-20 22:56:42 UTC

SUMMARY

I have a laptop with a hdmi screen to the left and a vga to the right of it. This never varies, the laptop is basically glued to the desk. I have other laptops for travelling with.

The issues are that:

Every time I log in, compositing is off and needs to be manually set.

Every time I log in, the screens have been shuffled from where I like them. HDMI (Primary) -> Laptop -> VGA to VGA ->Laptop (Primary) -> HDMI. and need to manually dragged back.

I remember these happening a few versions ago but can't be precise I'm afraid. The following issue is brand new.

There is also a popup offering to do various things with monitors but it seems to expect only one external monitor and no matter which option I choose, nothing happens.

STEPS TO REPRODUCE
1. Plug two external monitors into laptop
2. Log in
3. Arrange screens as desired and apply
4. Logout
5. Log back in

OBSERVED RESULT

Screens shuffled. Primary monitor moved to laptop screen and compositing may be disabled.

EXPECTED RESULT

Screens are where they were left. Compositing state as it was left and primary monitor as it was left.

SOFTWARE VERSIONS


Operating System: Kubuntu 18.10
KDE Plasma Version: 5.14.1
Qt Version: 5.11.1
KDE Frameworks Version: 5.51.0
Kernel Version: 4.18.0-10-generic
OS Type: 64-bit
Processors: 8 × Intel® Core™ i7-4720HQ CPU @ 2.60GHz
Memory: 15.6 GiB of RAM


ADDITIONAL INFORMATION

Comment 1 Richard Gladman 2018-10-22 10:43:13 UTC

I'm not sure whether to close this as after installing a couple of bits of server software (ssh and apache) then rebooting again, it seems to be remembering the settings.

I don't know what's different about it now which is why I'm unsure.

Comment 2 Nate Graham 2018-10-22 19:38:38 UTC

None of that should have been related at all. Before installing them, had you rebooted since upgrading to 5.14.1?

Comment 3 Richard Gladman 2018-10-22 21:14:07 UTC

(In reply to Nate Graham from comment #2)
> None of that should have been related at all. Before installing them, had
> you rebooted since upgrading to 5.14.1?

Once. Straight after the update.

Comment 4 Andrew Crouthamel 2018-11-07 11:12:28 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 5 Nate Graham 2018-11-07 14:42:07 UTC

Information was provided.

Comment 6 Nate Graham 2022-11-08 20:29:19 UTC

Thank you for the bug report. Unfortunately we were not able to get to it yet. Can we ask you to please see if you can reproduce the issue with Plasma 5.25 or 5.26?

If you can, please change the status to CONFIRMED when replying. If not, or if you can't because you no longer use this setup, you can change the status to RESOLVED WORKSFORME. Thanks a lot!

Comment 7 Richard Gladman 2022-11-09 09:55:51 UTC

(In reply to Nate Graham from comment #6)
> Thank you for the bug report. Unfortunately we were not able to get to it
> yet. Can we ask you to please see if you can reproduce the issue with Plasma
> 5.25 or 5.26?
> 
> If you can, please change the status to CONFIRMED when replying. If not, or
> if you can't because you no longer use this setup, you can change the status
> to RESOLVED WORKSFORME. Thanks a lot!

Marked as resolved