renaming 'icons/inkscape.svg' was the easiest way for force Inkscape to use its internal inkscape-icon (worked on win32 and osx) - you could give that a try to see if it's really the same svg icon file that causes problems on linux/ubuntu.
renaming 'icons/ inkscape. svg' was the easiest way for force Inkscape to use its internal inkscape-icon (worked on win32 and osx) - you could give that a try to see if it's really the same svg icon file that causes problems on linux/ubuntu.