2015-12-10 15:51 GMT+01:00 Ben Suttor <bsut...@gmail.com>:
> 2015-12-10 11:14 GMT+01:00 Tobias Ellinghaus <m...@houz.org>:
>> Am Donnerstag, 10. Dezember 2015, 02:40:16 schrieb Ben Suttor:
>>> I found a post in the mailing list archive which describes the exact
>>> problem I have, see below. I also have lots of tifs in one folder,
>>> sometimes darktable can load the file but most of the time it just crashes.
>>> Also a tif seems to not always trigger the problem, but when it does i have
>>> to delete the ./config/darktable folder in order to start darktable at all.
>>> I used a git version (1.7.0someting). An update to the latest 2.0git rpm
>>> for my distro (opensuse 13.2) doesn't help. To answer to the suggestions of
>>> Tobias (see below), I don't load the whole folder but only single files.
>>> Also the problem seems to occure very randomly, there are no specific not
>>> working files, or maybe they are somehow all corrupted. I have to mention
>>> that I use ffmpeg to generate those tifs from video files.
>>>
>>> I uploaded one of the files here:
>>> https://www.dropbox.com/s/moihnsx2u9jgy4j/export_000598.tif?dl=0
>>
>> Works for me, even mutliple times. Anyone else getting a crash?
>>
>> Did darktable write a backtrace to /tmp/darktable_bt_*? Please share that if
>> it exists.
>>
>
>
> No, I can't find any backtrace in /tmp.
> Does the ouput of "-d all" helps you? I loaded this up here:
> https://www.dropbox.com/s/pj72rpq32ecf9i7/darktable_crash.txt?dl=0
>
> Here is my ./config/darktable folder:
> https://www.dropbox.com/s/luz5gnv1fuvzad0/darktable.zip?dl=0
>
> Is there anything else I can provide or try?
>


Some more info:

The tifs which are exported from the videos with ffmpeg are in YCbCr
and compression is PackBits. I tried to open them with rawtherapee
without any success. showFoto (from digikam) doesn't like them either,
only my main viewer (Gwenview) has no problems with them. So there is
either a compability problem with those programs, or the files are
indeed broken.

RGB tifs are working without any problem with any program including
darktable. I will try to use a different compession mode with ffmpeg
now, I hope that is possible. I really wouldn't want to convert them
to RGB.



>>> >Am Mittwoch, 3. Juni 2015, 13:43:06 schrieb Cecil Carpenter:
>>> >> I get the following error when trying to load a folder containing 139
>>> >> TIF images with sidecars:
>>> >>
>>> >> darktable: magick/error.c:912: ThrowLoggedException: Assertion
>>> >> `exception->signature == 0xabacadabUL' failed.
>>> >> Aborted (core dumped)
>>> >>
>>> >> After the error occurs, Darktable quits (just goes away).  I am running
>>> >> Darktable 1.6.6 from
>>> >> http://ppa.launchpad.net/pmjdebruijn/darktable-release/ubuntu trusty
>>> >> under Ubuntu 14.04.2
>>> >>
>>> >> This happens while the thumbnails are being generated for the files.
>>> >>
>>> >> My mipmap cache is set to 536870912.  I have 2 background threads, but I
>>> >> have also tried this with 1 with same results.  My system has 32 GB of
>>> >> memory and an Intel i5-3570K.  I have an EVGA Geforce GTX 750 TI
>>> >> graphics processor, and I have OpenCL active.
>>> >>
>>> >> I cannot find a log file for darktable.  Up to the point the error
>>> >> message appears, I do not see any other abnormal messages.  I have other
>>> >> folders with more images (all TIF files) that do not cause me this
>>>
>>> problem.
>>>
>>> >Does that also happen when you import the images one by one as single
>>>
>>> files? If
>>>
>>> >you can find one specific image that triggers this it would be helpful if
>>>
>>> you
>>>
>>> >could provide us that file.
>>> >
>>> >Tobias
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