Bug 427250 - [Windows] KDEnlive crashes on startup after it worked fine for hours - libmlt error?
Summary: [Windows] KDEnlive crashes on startup after it worked fine for hours - libmlt...
Status: RESOLVED WORKSFORME
Alias: None
Product: kdenlive
Classification: Applications
Component: User Interface & Miscellaneous (show other bugs)
Version: 20.08.1
Platform: Microsoft Windows Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-10-02 14:28 UTC by ndjhwba
Modified: 2021-06-15 04:33 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:
fritzibaby: timeline_corruption+


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Description ndjhwba 2020-10-02 14:28:01 UTC
I installed KDEnlive yesterday on W7x64 (portable stable archive kdenlive-20.08.1_standalone). It worked fine, I did some editing and did a render. Some time later I tried to render something and the render was completed after 0s and no file written - no error anywhere. So I restarted KDEnlive. But it simply crashes on startup now. 

I already removed both config/cache folders from appdata\roaming and appdata\local and even deleted the KDEnlive folder and extracted a new one, but it simply refuses to start.

I see the splashscreen for a splitsecond, then my firewall informs me about a local connection (to dbus-daemon I assue) which I allow and then it crashes. Disabling the firewall does not do anything.

Is there no way to at least get a logfile? Starting the exe via cmd won't work. Seems there is a kdenlive.exe --mlt-log debug but it does not seem to do anything? Where is the log supposed to go?


When I run it via x64dbg debugger I can run until this error where it seems to crash in libmlt:


SetThreadName(E440, "NVFBCAsyncThread")
EXCEPTION_DEBUG_INFO:
           dwFirstChance: 1
           ExceptionCode: 406D1388 (MS_VC_EXCEPTION)
          ExceptionFlags: 00000000
        ExceptionAddress: 000007FEFC9BA06D kernelbase.000007FEFC9BA06D
        NumberParameters: 6
ExceptionInformation[00]: 0000000000001000
ExceptionInformation[01]: 000007FEDEC521E0 nvwgf2umx.000007FEDEC521E0
ExceptionInformation[02]: 00000000FFFFFFFF
ExceptionInformation[03]: 0000000000000000
ExceptionInformation[04]: 000000000000054F
ExceptionInformation[05]: 000007FEDE426FC2 nvwgf2umx.000007FEDE426FC2
First chance exception on 000007FEFC9BA06D (406D1388, MS_VC_EXCEPTION)!
Thread 10008 created, Entry: nvwgf2umx.000007FEDEAB0DAC
EXCEPTION_DEBUG_INFO:
           dwFirstChance: 1
           ExceptionCode: C0000005 (EXCEPTION_ACCESS_VIOLATION)
          ExceptionFlags: 00000000
        ExceptionAddress: 0000000069ACE8D1 libmlt-6.0000000069ACE8D1
        NumberParameters: 2
ExceptionInformation[00]: 0000000000000000 Read
ExceptionInformation[01]: 0000000000000038 Inaccessible Address
First chance exception on 0000000069ACE8D1 (C0000005, EXCEPTION_ACCESS_VIOLATION)!
EXCEPTION_DEBUG_INFO:
           dwFirstChance: 0
           ExceptionCode: C0000005 (EXCEPTION_ACCESS_VIOLATION)
          ExceptionFlags: 00000000
        ExceptionAddress: 0000000069ACE8D1 libmlt-6.0000000069ACE8D1
        NumberParameters: 2
ExceptionInformation[00]: 0000000000000000 Read
ExceptionInformation[01]: 0000000000000038 Inaccessible Address
Last chance exception on 0000000069ACE8D1 (C0000005, EXCEPTION_ACCESS_VIOLATION)!


SOFTWARE/OS VERSIONS
Windows: W7x64
KDEnlive: Standalone 20.08.1
Comment 1 emohr 2020-10-05 09:59:26 UTC
Please do the following test. Restart the PC and start Kdenlive as administrator. Still crashing?
Comment 2 ndjhwba 2020-10-13 18:16:02 UTC
I restarted the PC, ran as "Administrator" account - same crash.
I also updated to 20.08.2 - same.
Comment 3 Julius Künzel 2021-05-16 15:09:03 UTC
Thanks for your report! Do you still have this problem with the latest version (at the moment 21.04, note that need to uninstall the old version completely before installing 21.04)? If it persists can you provide a backtrace (gdb command "bt full")?
Comment 4 Bug Janitor Service 2021-05-31 04:33:39 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
mark the bug 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 Bug Janitor Service 2021-06-15 04:33:37 UTC
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!