I see it's hard to get a complete log from dmesg. Sorry my fault. Please install sysklogd, [ apt-get install sysklogd ] reboot, check if you got a proper /var/log/syslog file [ tail /var/log/syslog ] start h-e-n, if you bother, insert a note about the fact to syslog [ logger '###########h-e-n gui started#######' ] plug in your problematic device, click speed, vbus in h-e-n GUI if you bother, insert a note about the fact to syslog [ logger '###########h-e-n vbus clicked#######' ] wait 15 seconds click enumerate in h-e-n GUI wait another 15 sec close h-e-n send the file here [ cp /var/log/syslog someplace/h-e-n_syslog.txt; attach someplace/h-e-n_syslog.txt to a post here ] don't forget to reset the syslog file every now and then ( once a week? [ echo >/var/log/syslog ]), or uninstall sysklogd pkg eventually. If you don't either, your rootfs will fill up eventually, that's not a good thing long term. Thanks again for helping with this, and sorry for my lack to notice what's the problem with those logs. cheers jOERG