Hi, I'm running 2.6.24 on debian/unstable. I have an Asus P5E-V-HDMI (Intel G35 chipset) with on-board rs232 serial port. http://www.asus.com/products.aspx?l1=3&l2=11&l3=584&l4=0&model=1929&modelmenu=1 With an LED breakout box connected, i get these signals asserted when doing: cat random.txt > /dev/ttyS0: TD faint green RD flickering red and green RTS red DTR red When i'm not sending anything i get: TD red RD green RTS green CTS red DSR red DCD red DTR red IIRC, RD should not be asserted red or green at all because it should be an input. My other serial cards behave ok. I checked the cable between the motherboard and breakout box. -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html