Subject: Re: Ti Powerbooks and YDL 2.1 - Problems
From: Chip Witt (chip.witt@westwave.com)
Date: Tue Nov 06 2001 - 00:17:16 MST
Gavin,
I have the same Powerbook and documented the fix to the problems you are
having on this listserve (BTW - I'm now running 2.4.12-benh0 with this
solution in place). The info from that post is as follows:
Actually, The problem was specific to the drive needing ATAPI SCSI emulation
to function properly. I will describe what
worked to fix the problem...
In /etc/yaboot.conf I added the "append" line:
<snipped normal stuff from top of file>
# yaboot images
image=/boot/vmlinux
label=linux
root=/dev/hda4
append="hdc=ide-scsi"
Then I had to make the /dev/sr0 device:
mknod /dev/sr0 b 11 0
chgrp disk /dev/sr0
chmod 666 /dev/sr0 # so anyone can use
Fixed the symlink to /dev/cdrom:
ln -sf /dev/sr0 /dev/cdrom
Voila! Music for the masses (and ripping too). The only thing I've found to
be wonky about this particular solution is,
unlike on my x86 laptop with traditional ATAPI control, ripping CD tracks to
.wav prior to encoding to .mp3
(or other) results in kernel threads that are uninterruptable by user
processes -- making the machine impossible to use
for anything but the ripping process. I guess it's true...you can't have
everything...but we're getting
closer.
If you're into playing DVDs, use Xine with the DVDNav plugin
(xine.sourceforge.net) over Video Lan Client (vlc sound sync doesn't work
well).
I also have a line in my rc.local file that says, "echo 0 >
/proc/sys/dev/cdrom/check_media". This fixed a problem with the 2.4 kernel
installer that wouldn't allow for the CD-ROM to get mounted. I put the line
in rc.local at someone else's suggestion when trouble-shooting the issue you
are now having. I've left it in simply because it isn't doing any harm (I
don't know if it is necessary now or not -- probably not).
Cheers.
CW
Gavin Hemphill wrote:
> Well I've just spent an interesting two days documenting a problem with
> the Ti Powerbooks and the 2.4 series kernels. I have access to two
> 500Mhz Ti's with the Matshita DVD-ROM SR-8187 drives. When I tried to
> follow Dan Burcaw's experimental instructions on doing a yup update of
> YDL2.0 to 2.1 I ran into the problem that a mount of any CD returned the
> error message "wrong media type" (I hadn't used the CD at all since
> moving to the 2.4 series kernels). After trying all the various ways of
> mounting an ISO CD I decided to try the 2.2 series kernels (which of
> course are on the 2.0 CD - catch 22). After downloading the old kernel
> RPM's and installing them I was able to mount the CD with no problem and
> actually completed the yup update to 2.1. However with the new 2.4.10
> kernel in place I'm back to the error message if I try and mount the CD
> I used to do the update. I've tried the latest kernels from Benh, and
> the bk tree and they all report the same error. It looks like the drive
> is reporting that it doesn't have a DVD inserted, and fails to allow for
> the fact that CDROMS are valid. As a side note I've also observed this
> error message on my G4 733 Tower with the superdrive.
This archive was generated by hypermail 2a24 : Tue Nov 06 2001 - 00:29:16 MST