[Pkg-phototools-devel] Bug#897059: Bug#897059: libgphoto2-6: libgphoto2 causes corrupted image file transfers

[Herbert Fortes]

severity 897059 serious
thanks

I will read this tomorrow



Regards,
Herbert

Em 27-04-2018 16:23, Matti Hamalainen escreveu:
> Package: libgphoto2-6
> Version: 2.5.17
> Severity: normal
> 
> Dear Maintainer,
> 
> After upgrading libgphoto2 to latest packaged version 2.5.17, I immediately
> noticed that the CR2 RAW files fetched via "gphoto2 -P" were unreadable by
> Darktable, Adobe Lightroom and other RAW image software. My cameras are Canon
> EOS 7D Mark II and Canon EOS 500D, connected via USB. The problem occurs with
> both cameras.
> 
> I quickly noticed that repeated transfers resulted in files with different
> SHA256 sums. Downgrading to libgphoto2 to previous 2.5.16 makes the problem go
> away, checksums are always consistent. With 2.5.17, each file had different
> checksum for each transfer, pointing to serious corruption.
> 
> I should state that this is a VERY SERIOUS ISSUE! Usually when I transfer
> photos from camera, I also immediately delete them from the camera's memory
> card. Fortunately I noticed the problem with only few pictures taken, so I
> personally suffered almost no loss... but it could have been much worse!
> 
> I have no idea if this affects only Canon cameras, as the changelog for 2.5.17
> states various EOS -related changes, but I think notifying upstream would be
> appropriate.
> 
> 
> 
> 
> -- System Information:
> Debian Release: buster/sid
>   APT prefers testing-debug
>   APT policy: (500, 'testing-debug'), (500, 'testing')
> Architecture: amd64 (x86_64)
> Foreign Architectures: i386
> 
> Kernel: Linux 4.16.5-qcmm (SMP w/8 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
> LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
> 
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