Comment 5 for bug 1640171

I'm having the same problem. Once I could barely se some atoms (extremely dark gray on black). Changed the background color to light gray, but to no avail. Here's my output:

rasmus@rasmus-Lenovo-Z710:~$ avogadro
"Avogadro version: 1.1.1 Git:
LibAvogadro version: 1.1.1 Git: "
Locale: "nb_NO"
Translation successfully loaded.
System has OpenGL support.
About to test OpenGL capabilities.
OpenGL capabilities found:
 Double Buffering.
 Direct Rendering.
 Antialiasing.
void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "" under id 62
void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "" under id 63
Loading plugins: "/usr/bin/../lib/avogadro/1_1"
Searching for plugins in "/usr/lib/avogadro/1_1"
Searching for plugins in "/usr/lib/avogadro/1_1/colors"
Searching for plugins in "/usr/lib/avogadro/1_1/engines"
Searching for plugins in "/usr/lib/avogadro/1_1/extensions"
Searching for plugins in "/usr/lib/avogadro/1_1/tools"
Loading plugins: "/home/rasmus/.avogadro/1_1/plugins"
Settings are missing for the next engines: ()
QStackedLayout::setCurrentWidget: Widget 0x55bb862338e0 not contained in stack
dev warning: Extension "GAMESS" is using a deprecated DockWidget loading method. See Extension::dockWidgets() documentation.
dev warning: Extension "Orbitals" is using a deprecated DockWidget loading method. See Extension::dockWidgets() documentation.
dev warning: Extension "Python-terminal" is using a deprecated DockWidget loading method. See Extension::dockWidgets() documentation.
dev warning: Extension "Vibrasjon" is using a deprecated DockWidget loading method. See Extension::dockWidgets() documentation.
GLWidget initialisation...
GLSL support enabled, OpenGL 2.0 support confirmed.
GLWidget initialised...
createObjects()
OpenGL extension GL_ARB_texture_rectangle is present.
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: cHRM: invalid chromaticities

Chromaticities? Please help!

-r :-)