Spectacle Rectangular Region selection locks the KDE GUI

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1

Since a few days I see that when using Spectacle, the KDE Screenshot Utility, to make a screen shot using the Rectangular Region option, the GUI is locked just after I start to draw the rectangular region using the mouse.


Graphics:  Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics driver: i915 v: kernel 
           Display: x11 server: X.org 1.20.3 driver: modesetting unloaded: fbdev,vesa resolution: <xdpyinfo missing> 
           OpenGL: renderer: Mesa DRI Intel Haswell Desktop v: 4.5 Mesa 18.1.7 

KDE Plasa Version: 5.15.2, KDE Frameworks Version: 5.55.0, Qt Version: 5.12.0

When the screen is locked the Windows key will still pop up the start menu, but I can not select another application to start. The mouse also still moves but a klick has no effect.

I can switch to the command line using Ctrl-Alt-F1 and that works. top does not show anything special.

Two questions:

  • Is there a way to go back to the GUI?
  • How to get more details on why the GUI is hanging
2

Hi, don’t see this, see:
https://i.imgur.com/PC9e26b.png

Any additional repos involved?

3

Enter = take screenshot
Esc = cancel

Does either work?

4

Thanks for the feedback, tried it yesterday and today but could not reproduce it, let me try again tomorrow.

Pressing Enter or ESC did not do anything, but like said the Start key did work and Num Lock did toggle the LED.

5

Tried more times and could not reproduce the problem.

Still wondering what to do to diagnose a GUI that is responding tough, so if it would take place again, I can give some more meaningful information.

6

Did run into the problem three more times today, now on 20190314.

Added some identifiers to the log using “echo ‘Mark’ > /dev/kmsg” and based on that this is what I am seeing in the log:


Mar 17 11:28:16 plasmashell[2488]: org.kde.plasmaquick: Applet "Application Menu" loaded after 0 msec
Mar 17 11:28:16 plasmashell[2488]: org.kde.plasmaquick: Increasing score for "Application Menu" to 97
Mar 17 11:28:17 plasmashell[2488]: trying to show an empty dialog
Mar 17 11:28:17 plasmashell[2488]: trying to show an empty dialog
Mar 17 11:28:19 kwin_x11[2479]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 4435, resource id: 29360211, major code: 18 (ChangeProperty), minor code: 0
Mar 17 11:28:22 plasmashell[2488]: KActivitiesStats( 0x563dad383140 ) ResultModelPrivate::onResultScoreUpdated  result added: "applications:org.kde.spectacle.desktop" score: 6.70472 last: 1552818499 first: 1539035741

After that nothing till the moment I pressed Ctrl+Shift+F1 to get a console.

Is anybody seeing Spectacle Rectangular Region selection working fine in a recent Tumbleweed install?

A work-around is to use the whole screen capture and then use another program to cut out what is needed.

7

I normally capture the entire screen, then “gimp it”…

Just tried rectangular selection and confirm it’s definitely broken. Cursor changes to a selection cross, but I’m unable to make the selection, in fact as far as the kde desktop is concerned, I’m unable to do anything… only move the cursor around.

That’s with TW 20190314 and nvidia graphics.

8

Thanks Paul for confirming, do you also see the “kwin_x11[2479]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow)” message in your system log?

This then looks to me like KDE bug, probably a ticket should be opened there…

9

Yes… but there’s a lot of those anyway that don’t originate from spectacle, so I’m not sure that’s too relevant.

What I am seeing though is spectacle creating literally thousands of lines in the log, take a look at this screenshot:

http://paste.opensuse.org/view/raw/15f94697

This line “org.kde.Spectacle[1329]: nouveau: kernel rejected pushbuf: Cannot allocate memory” may perhaps be more interesting ? (I note you’re using intel graphics, whilst I’m using nvidia/nouveau)

This then looks to me like KDE bug, probably a ticket should be opened there…

I had a quick look over at https://bugs.kde.org/ as this problem seemed vaguely familiar, but I didn’t find anything, so maybe I’m mistaken…

Yes, probably worth a bug report.

10

I am/was not seeing the “org.kde.Spectacle” messages Paul is seeing at all, likely because I am indeed running on Intel graphics.

Saw there was an update available, so updated to 20190315 and tried the Rectangular Selection. No problem, so either fixed or strangely intermittent.

11

Not on this system I’m afraid. I’ve just updated to 20190315 and rebooted, the Rectangular Selection is still not working.

12

Updated Tumbleweed to 20190411, tried Spectacle rectangular select and got the screen locked up again.

Found How to restart kwin when it is hung? and made a print-out so next time I can try the suggestions given there.

13

Further to my post #11 - After TW 20190325 not only did the GUI lock up, but I was getting a very funky looking screen…

It is supposedly fixed by the Rectangular Region rewrite in 19.04 …

I reported it as a bug a while ago https://bugs.kde.org/show_bug.cgi?id=405931

14

Thanks Paul for following up by creating a bug report.

From the KDE Announcements I understand the KDE Applications 19.04 Release Candidate has been released 5 april so I guess the official release will be in some weeks. Next question is then when it will land in Tumbleweed.

I know how to get the KDE Plasma and Frameworks version of Tumbleweed (KInfocenter) but how to get the current version of the KDE Applications under Tumbleweed?

15

From any of the applications themselves, it’s under Help -> About (Application) …

16

Okay, probably missed that as the major version number did go from 18 to 19.

I see Spectacle currently reporting 18.2.3 and according to KDE Announcements that was released 7th March 2019.

Had a look at https://build.opensuse.org/package/live_build_log/KDE:Applications/spectacle/KDE_Frameworks5_openSUSE_Tumbleweed/x86_64 and saw that 19.03.90 was available so removed the default installation and installed spectacle-19.03.90-110.1.x86_64 and spectacle-lang-19.03.90-110.1.noarch and did give a try.

19.03.90 works for me, but my failure was intermittent so not sure it has fixed also the problem of Paul.

17

I don’t normally use rectangular selection, so I’ll wait until the fixed version makes it into TW and give it a try then.

18

With the new version of Spctacle manually installed, it is funny what zypper dup is proposing:


Computing distribution upgrade...
2 Problems:
Problem: problem with installed package spectacle-19.03.90-110.1.x86_64
Problem: problem with installed package spectacle-lang-19.03.90-110.1.noarch

Problem: problem with installed package spectacle-19.03.90-110.1.x86_64
 Solution 1: install spectacle-18.12.3-1.1.x86_64 (with vendor change)
  obs://build.opensuse.org/KDE  -->  openSUSE
 Solution 2: keep obsolete spectacle-19.03.90-110.1.x86_64

Choose from above solutions by number or skip, retry or cancel [1/2/s/r/c] (c):

Obsolete??? :wink:

19

My guess you have the Kde extra in your repositories.

20

TW snapshot 20190426 delivered Spectacle 19.04.00-1.1 and indeed the rectangular selection does now work correctly on this machine.