Date: Wed, 16 Jan 2008 17:08:34 +0100 From: Michael Nottebrock <lofi@freebsd.org> To: freebsd-stable@freebsd.org Cc: freebsd-usb@freebsd.org Subject: USB prevents system from powering off and ucom prevents usb from being unloaded - ideas? Message-ID: <200801161708.38213.lofi@freebsd.org>
index | next in thread | raw e-mail
[-- Attachment #1 --] Subject line is the executive summary of my problem: I have a box with an Intel 945GC A2 chipset that will not poweroff on shutdown if the usb kernel module is loaded (or statically compiled into the kernel). Unloading the usb kernel modules sometime during shutdown (I hacked the usbd rc script for this) to work around the problem helped until I needed to hook up another device which uses ucom(4) to the machine. On kldunload, ucom claims to detach, but remains loaded and subsequent kldunload attempts trigger the error "kldunload: attempt to unload file that was loaded by the kernel". The stuck ucom in turn prevents usb from getting unloaded and the machine cannot poweroff. I have already tried disabling EHCI, but it does not help. Any ideas on either getting uhci to properly detach on shutdown or getting rid of ucom? Cheers, -- ,_, | Michael Nottebrock | lofi@freebsd.org (/^ ^\) | FreeBSD - The Power to Serve | http://www.freebsd.org \u/ | K Desktop Environment on FreeBSD | http://freebsd.kde.org [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQBHjiwDXhc68WspdLARAmDoAJ4m4OPRHOUlcM3KlMDnjB3sTrQrdQCfXjhB 6REg8XkHvApai58dZDpDgBI= =YmVQ -----END PGP SIGNATURE-----help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200801161708.38213.lofi>