HelenOS sources

VISUAL_UNKNOWN    144 kernel/arch/ppc32/src/ppc32.c 	unsigned int visual = VISUAL_UNKNOWN;
VISUAL_UNKNOWN    178 kernel/arch/ppc32/src/ppc32.c 			visual = VISUAL_UNKNOWN;
VISUAL_UNKNOWN    187 kernel/arch/ppc32/src/ppc32.c 	    (fb_scanline > 0) && (visual != VISUAL_UNKNOWN)) {