Date: Thu, 12 Sep 2013 22:18:49 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: freebsd-usb@FreeBSD.org Subject: usbdump and hw.usb.no_pf Message-ID: <alpine.BSF.2.00.1309122042320.24403@wonkity.com>
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A 9-STABLE desktop running amd64 steadfastly refuses to run usbdump(8): # usbdump -i usbus0 -v -w /tmp/usb.log read: Device not configured 0 packets captured 0 packets received by filter 0 packets dropped by kernel It turns out that having hw.usb.no_pf="1" set in /boot/loader.conf to speed up booting disables usbdump. Interestingly, this sysctl can be changed at runtime, but usbdump will still not work. The value has to be set in /boot/loader.conf at boot for usbdump to work again. If usbdump could produce a warning when this sysctl is was set to 1 at boot, it would make the mysterious error less mysterious.
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