Sorry.
I noticed too late that the attached screenshot has not extension.
$ file /tmp/ScreenschotSynaptic /tmp/ScreenschotSynaptic: PNG image data, 1275 x 725, 8-bit/color RGBA, non-interlaced
Sorry.
I noticed too late that the attached screenshot has not extension.
$ file /tmp/Screenscho tSynaptic tSynaptic: PNG image data, 1275 x 725, 8-bit/color RGBA, non-interlaced
/tmp/Screenscho