Oliver, > Does it happen with 2.6.29? haven't tried yet. I'm just upgrading to ubuntu 9.04, which has 2.6.28 built in. I also see cdc-acm fixes in the 2.6.28 Changelog, like: USB: gadget: cdc-acm deadlock fix > Could you get dmesg of 2.6.2(7/9) with CONFIG_USB_DEBUG and debug > activated in drivers/usb/class/cdc-acm.c ? ok, let me upgrade to 2.6.28 first, and if the proplem still persists, I'll compile 2.6.29 with the above settings manually. Akos -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html