Bug 309789 - kwin crashes after attempting to set display to mirror vertically
Summary: kwin crashes after attempting to set display to mirror vertically
Alias: None
Product: krandr
Classification: Miscellaneous
Component: control center (show other bugs)
Version: 4.9.2
Platform: Ubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: Gustavo Pichorim Boiko
Depends on:
Reported: 2012-11-09 03:07 UTC by sparhawk
Modified: 2015-01-23 00:11 UTC (History)
1 user (show)

See Also:
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Description sparhawk 2012-11-09 03:07:48 UTC
Previously (incorrectly) reported against kwin here: https://bugs.kde.org/show_bug.cgi?id=309415
I was told to file a new bug against krandr.

Reproducible: Always

Steps to Reproduce:
1. Open System settings > Hardware > Display and Monitor > Size & Orientation > LVDS1 (Connected) > Orientation.
2. Change this from "No Rotation" to "Mirror Vertically".
3. Click "Apply".
Actual Results:  
The display flashed, the crash window popped up, and the monitor was the same as before.

Expected Results:  
The display to mirror vertically.

Setting the display to mirror using the CLI works using either of the following:
$ xrandr -o inverted
$ xrand --output LVDS1 --rotate inverted

Via the GUI, "mirror horizontally" also crashes, but the three rotate variants work fine.
Comment 1 Christoph Feck 2012-11-09 10:40:24 UTC
The backtrace from the bug report you linked to is a KWin crash in the video driver. Please add a backtrace for a crash that is related to krandr.
Comment 2 sparhawk 2012-11-09 10:41:46 UTC
Sorry, I'm not sure how to do that. Could you please explain? Cheers.
Comment 3 Christoph Feck 2012-11-09 11:06:47 UTC
I read the linked bug report more carefully, and now I understand the issue.
Comment 4 Christoph Feck 2015-01-23 00:11:31 UTC
Thank you for your bug report or feature request.

Unfortunately, we did not have a maintainer for the "krandr" components, which are used to manage displays and monitors in the KDE Workspaces.

The "krandr" components has been superseded by "KScreen" in newer releases of the KDE Workspaces. It is compatible with all versions since 4.11, and is also used with Plasma 5. Please check with your distribution how to update to KScreen.

If this issue or feature request is still applicable to KScreen version 1.0.5 or newer, please add a comment. We will then reassign this ticket to KScreen developers.

If you are already using KScreen to manage displays or monitors, and found a different bug or need a specific feature, please create a new ticket for "KScreen" product in this bugzilla using this link: https://bugs.kde.org/enter_bug.cgi?product=KScreen

(This is an automatic message from the KDE Bug Triaging Team)