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IDProjectCategoryView StatusDate SubmittedLast Update
0003240KdenliveUser Interfacepublic2014-03-29 09:292014-08-15 01:00
Reportervarchar 
Assigned Tovpinon 
PrioritynormalSeveritycrashReproducibilitysometimes
StatusfeedbackResolutionopen 
Platform64 bitOSGentoo LinuxOS Version
Product Version0.9.6 
Target VersionFixed in Version 
Summary0003240: Fast undo/redo actions crash kdenlive
DescriptionNow undo/redo must be used with some patience, because if you do it to fast kdenlive may crash.
Steps To ReproduceAdd some clip(s) on timeline,
make some changes,
try undo/redo by _fast_ clicking toolbar buttons until kdenlive crashes.
TagsNo tags attached.
Build/Install Method(select)
Attached Filestxt file icon gdb-kdenlive.txt [^] (12,095 bytes) 2014-03-29 14:23 [Show Content]
txt file icon gdb-kdenlive-symbols.txt [^] (13,300 bytes) 2014-03-29 15:16 [Show Content]

- Relationships

-  Notes
(0009819)
j-b-m (administrator)
2014-03-29 13:19

A back trace would be useful, I cannot reproduce...
See instructions here (under step 3):
http://kdenlive.org/node/872 [^]
(0009820)
varchar (reporter)
2014-03-29 14:24

Recompiled kdenlive & MLT with "debug" use flags, crashed it by undo/redo, and attached the execution log and backtrace from run under gdb.

$ kdenlive -v
Qt: 4.8.5
KDE Development Platform: 4.11.5
Kdenlive: 0.9.6

$ melt -version
melt 0.9.0
Copyright (C) 2002-2013 Ushodaya Enterprises Limited

My steps before crash was: adding 6 clips to project tree and timeline (one video h264/mkv no audio and 5 ppm bitmaps) rearange them, changing duration of some of them end then fast undo/redo clicking. Before crush a couple of errors on the status bar appears, with messages like "error removing clip at 00:00:04:00 on track 0".

If I can provide some any additional info please tell me about it.
(0009828)
j-b-m (administrator)
2014-03-29 23:09

Working on it..
(0009830)
varchar (reporter)
2014-03-29 23:55

Good luck and thank you! Good to know that kdenlive alive.
(0009831)
j-b-m (administrator)
2014-03-30 01:56

I just committed some improvements. Not 100% crash free but it is much better for me now. Can you please test?
(0009871)
varchar (reporter)
2014-03-31 23:51

Tested with Kdenlive: 0.9.7 (rev. v0.9.4-357-g3869054).

Yes, still possible to crash in this way but much harder. This time no error messages was seen before crash.

Note that I tested with toolbar undo/redo buttons only. With shortcuts things may differ. But I can't try. Just discovered that shortcuts in all Qt applications stop working...
(0010188)
vpinon (administrator)
2014-08-05 23:36

Hello, can you check if problem persist with recent versions? Some fixes on multi-threading might have solved the problem...

- Issue History
Date Modified Username Field Change
2014-03-29 09:29 varchar New Issue
2014-03-29 13:19 j-b-m Note Added: 0009819
2014-03-29 13:19 j-b-m Assigned To => j-b-m
2014-03-29 13:19 j-b-m Status new => feedback
2014-03-29 14:23 varchar File Added: 0003240-gdb-kdenlive.txt
2014-03-29 14:24 varchar Note Added: 0009820
2014-03-29 14:24 varchar Status feedback => assigned
2014-03-29 15:16 varchar File Added: 0003240-gdb-kdenlive-symbols.txt
2014-03-29 23:09 j-b-m Note Added: 0009828
2014-03-29 23:09 j-b-m Status assigned => acknowledged
2014-03-29 23:55 varchar Note Added: 0009830
2014-03-30 01:56 j-b-m Note Added: 0009831
2014-03-31 23:51 varchar Note Added: 0009871
2014-08-05 23:36 vpinon Note Added: 0010188
2014-08-05 23:36 vpinon Assigned To j-b-m => vpinon
2014-08-05 23:36 vpinon Status acknowledged => assigned
2014-08-15 01:00 vpinon Status assigned => feedback


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