> Date: Mon, 19 Nov 2007 01:56:23 -0500 > From: "Aryeh M. Friedman" <aryeh.friedman_at_gmail.com> > Sender: owner-freebsd-current_at_freebsd.org > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Where the saga left off: > > 1. With OEM DVD-RW on a P35/IHC9(R) [MSI Neo-F mobo] any attempt at > I/O under 8-CURRENT AMD64 produced timeouts (i386 also but less > severe) infinite loops > > 2. Problem was narrowed down to be potentially related to either SATA > CD's in general or IHC9(R) > > 3. Jeremy Chadwhick sent me a Plextor PX-755A (SATA/150 DVD+/-RW) to > attempt to isolate the problem > > 4. All ata patches have been applied up through Thurs. (currently > doing a buildworld/kernel with the new stuff) > > The drive arrived and the following is the result: > > 1. Reads and writes fine for CD's > > 2. Does not write DVD's > > 3. Untested DVD reading > > 4. Does not create a /dev/dvdX (some documentation leads me to believe > it should exist but I might be wrong) > Just for the record, /dev/dvd is net created by default, although many video and audio tools use it as a default device. To get /dev/dvd, add the following to /etc/devfs.conf: link cd0 dvd This will add a symlink to /dev/dvd whenever /dev/cd0 is present at boot time. You may also want to add: perm cd0 0666 perm pass0 0666 to allow general user access to the DVD for both reading and writing. You can use devfs.rules to set the permissions to a drive connected after boot, but devfs.rules lacks the ability to create the symlink. You can create it with 'ln -s', though, if you have root access. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman_at_es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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