Yes, this is an x-trans raw file .... and yes NaNs are in console output as below:

[dev_pixelpipe] module `lowpass' outputs NaNs! [preview]
[dev_pixelpipe] module `lowpass' min: (0.000000; -128.000000; -128.000000) max: (100.000000; 128.000000; 128.000000) [preview]
[dev_pixelpipe] module `output color profile' outputs NaNs! [preview]
[dev_pixelpipe] module `output color profile' min: (0.000000; 0.000000; 0.000000) max: (1.329883; 1.130938; 1.493263) [preview]
[dev_pixelpipe] module `velvia' outputs NaNs! [preview]
[dev_pixelpipe] module `velvia' min: (0.000000; 0.000000; 0.000000) max: (1.000000; 1.000000; 1.000000) [preview][dev_pixelpipe] module `lowpass' outputs NaNs! [preview] [dev_pixelpipe] module `lowpass' min: (0.000000; -128.000000; -128.000000) max: (100.000000; 128.000000; 128.000000) [preview]
[dev_pixelpipe] module `output color profile' outputs NaNs! [preview]
[dev_pixelpipe] module `output color profile' min: (0.000000; 0.000000; 0.000000) max: (1.329883; 1.130938; 1.493263) [preview]
[dev_pixelpipe] module `velvia' outputs NaNs! [preview]
[dev_pixelpipe] module `velvia' min: (0.000000; 0.000000; 0.000000) max: (1.000000; 1.000000; 1.000000) [preview]


On 10/30/2016 01:53 AM, Roman Lebedev wrote:
Does all of you expirience the problem with X-Trans sensor?
Or with Bayer too?

For x-trans: https://redmine.darktable.org/issues/11272
For bayer need reproducer.
Hint: you can run darktable as  `darktable -d nan`  and look for
"Module xyz outputs NaNs!" in the console output."

Roman.

On Sun, Oct 30, 2016 at 11:21 AM, David Vincent-Jones
<david...@gmail.com> wrote:
I opened dt (with gdb) using an image that showed the problem yesterday and
it was still apparent at start up ... I switched several times between
gaussian and bilateral and the problem was clearly indicated; the 2
locations blacked-out and reapeared with the change.

Nothing unusual in the gdb listing.

Tried to adjust memory settings (8 gb on this machine) ... no change.

2.1.pre+git2000.f63e5ce-1.1 Opensuse 42.1


On 10/29/2016 10:59 AM, Patrick Shanahan wrote:
* David Vincent-Jones <david...@gmail.com> [10-29-16 12:33]:
I find that if gaussian curve is used either with shad/high or lowpass
the
display of the histogram is lost also the top-left overall image.

I first noticed this with shad/high and found the situation was corrected
when I switched to bilateral filter.
seems also to happen with perspective correction on 19c3415, but not all
the time, and is still active/usable to adjust exposure.  it also will
reappear when accessing some other modules.

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