iPod/ieee1394 problem--iPod not being detected

The Mountain Man · l33t Joined: 03 Sep 2003 Posts: 643

I've successfully used my iPod with Linux in the past, but it has recently and inexplicably stopped working (perhaps "emerge -u world" killed it?).

Basically, it's not being detected as an iPod. When I plug in my iPod, dmesg shows the following output:

The Mountain Man · l33t Joined: 03 Sep 2003 Posts: 643

O.K., apparently the problem has not been solved. I just plugged in my iPod and it exhibited the exact same problems I detailed in the original post. What the hell is going on?
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RockCrusha · Tux's lil' helper Joined: 31 Jan 2004 Posts: 91

i'm experiencing this exact problem.

using linux kernel 2.6.8-r10, gcc-3.4.3

:: bump ::

The Mountain Man · l33t Joined: 03 Sep 2003 Posts: 643

O.K., I think I've figured out another piece of the puzzle. It seems the iPod has to be "awake" when it is plugged into the firewire port. Simply touch the controls (with the unit unlocked, of course) to power up the iPod before plugging in the firewire cable.

Try that, and if it works for you then I will go ahead and consider this one solved.
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zontar · Posted: Sun Jan 23, 2005 9:05 pm Post subject: ipod not detected

I'm having the same problem. My ipod (a new 40G one) worked under 2.4. Now that I am using 2.6, it is not detected unless I reboot with it plugged in. Here's my dmesg output after plugging it in, doing modprobe sbp2, and then unplugging.

ieee1394: Node changed: 0-01:1023 -> 0-00:1023
ieee1394: Node changed: 0-00:1023 -> 0-01:1023
sbp2: $Rev: 1219 $ Ben Collins <bcollins@debian.org>
ieee1394: Node changed: 0-01:1023 -> 0-00:1023
ieee1394: Node suspended: ID:BUS[0-00:1023] GUID[000a27000294f639]

I've set udev up to make an "ipod" node, but it wont do it unless the ipod is plugged in at boot time. I tried mknod-ing my own nodes but that doesnt seem to work. I've only been using linux for about 6 months so I might be doing something stupid. But I'm starting to suspect that the newest ipods dont play well with hotplug and/or udev.

Any suggestions? I can always just reboot when I want to use the 'pod. But that's kind of a drag...
:wink:

Vivid5500 · n00b Joined: 28 Jan 2004 Posts: 20

zurd · Posted: Tue Jan 25, 2005 2:57 am Post subject: 1

Indeed, I need to reboot to so that it can work.

Sometimes it do work, other times not, but a simple reboot solve it.

Is it really because of the hotplugging? Is it necessary to keep it? If it's the cause of the problem, what about we just remove it from the kernel, you think that would help?

zontar · Posted: Wed Jan 26, 2005 2:00 am Post subject: maybe this works

I just tried something that seemed to work

truck root # /etc/init.d/hotplug status
* status: stopped
truck root # /etc/init.d/hotplug start
truck root # /etc/init.d/hotplug status
* status: started

I dont know why hotplug had stopped but when I started it and plugged in the ipod, it got recognized.

zurd · Posted: Wed Jan 26, 2005 8:58 am Post subject:

I don't think this problem is about hotplug, I don't even have the file /etc/init.d/hotplug but a reboot solved the problem.

The Mountain Man · l33t Joined: 03 Sep 2003 Posts: 643

O.K., have you guys made the sure the iPod is powered on before plugging it in? I've not done a lot of testing, but the little I have done shows that the iPod is consistently detected if it is powered on before being plugged in.
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zurd · Posted: Thu Jan 27, 2005 11:46 pm Post subject: 1

Yup, for me it's always plugged in and turned on. I always have to modprobe sbp2 also. And as I said I do not have hotplug.

I don't mind anyway since now my 20 gigs iPod is full and I rarely update it, maybe I will do so in about 3 months! So even if I reboot it's not the end of the world, my computer ain't a server you cannot reboot ;-)

But, I don't know if it's because I am using Linux with it but this is my 3rd iPod of 20 gigs, the 2 others broke with a broken filesystem (the logo of the icon folder showing when booting with it) or maybe I'm just unlucky. The 5 gigs iPod I owned before lasted 21 months tho and I've been using it with Windows and Linux. It broke because I drop it on the floor. If anyone has a similar story about broken iPod i'll be glad to hear it

zontar · Posted: Thu Jan 27, 2005 11:57 pm Post subject:

Yes, I've tried powering-on first. It doesn't help. Recently I've had luck with the following:

rc-update del hotplug default

recompile with ieee1394 and ohci1394 as modules

After Gnome has started up

/etc/initd/hotplug start

modprobe -v ohci1394

Then I can plug the ipod in and it gets recognized. It's worked 3 times in a row over a couple of days so I'm getting hopeful. But it seems kind of weird...

zontar · Posted: Sat Jan 29, 2005 9:24 pm Post subject:

Well, for 3 days it worked regularly. I tried powering down and rebooting a couple of times a day just to make sure. But today, no dice! I think Apple is messing with us. Back to rebooting!

datenwolf · n00b Joined: 01 Sep 2003 Posts: 55

zontar · Posted: Sun Jan 30, 2005 7:35 pm Post subject:

Thanks for the tip, but my root file system is SATA so I think I need sd_mod in the kernel.

datenwolf · n00b Joined: 01 Sep 2003 Posts: 55

zontar · Posted: Mon Jan 31, 2005 1:11 am Post subject:

That sounds about right. I didn't have problems until I migrated to 2.6 and started using udev. I'm using 2.6.10-r6. Strange the way it works sometimes, though.

morset · n00b Joined: 14 Nov 2003 Posts: 31

Adrien · Posted: Tue Feb 01, 2005 8:47 am Post subject:

I've had exactly the same problem with the iPod that you guys all have.
I'm using a 2.6.10-r6 kernel and I know it's not a hardware problem:

https://forums.gentoo.org/viewtopic.php?t=287201&highlight=device+ipod

Some friend of mine told me it was a problem about hotplug or udev and I could find an answer on www.linux1394.org but didn't find anything interesting though.

What I did to solve up my problem: I simply used the other cable (I mean the double-cable USB/Firewire), still with the dock connector and with this cable, it just works perfectly....Don't ask me why, I don't have a clue (cause my single firewire cable works just fine in windows

)

regards,

zontar · Posted: Wed Feb 02, 2005 3:02 am Post subject:

It does seem to work with the USB cable, but then I don't have Firewire speeds. Also, I'm not sure how to get it to stop saying "do not disconnect":

truck root # eject /dev/ipod
eject: unable to eject, last error: Operation not permitted

truck root # eject /dev/sdb
eject: unable to find or open device for: `/dev/sdb'

(/dev/sda is my SATA hard disk.)

modprobe -r sbp2 is no use, since I'm using USB.

datenwolf · n00b Joined: 01 Sep 2003 Posts: 55

The Mountain Man · l33t Joined: 03 Sep 2003 Posts: 643

Well, this little problem is still plaguing me. It is my conclussion that IEEE1394 support in the kernel is broken as a Google search for "ieee1394: Node changed: 0-00:1023 -> 0-01:1023" returns a number of hits related to difficulties with various firewire hardware.

At this point, there doesn't seem to be a "magic bullet" solution (sometimes it works, sometimes it doesn't) so I guess we'll just have to hope the kernel devs get around to fixing it eventually.
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zontar · Posted: Sat Mar 05, 2005 6:59 pm Post subject:

That is the conclusion I also reached. The ipod seems to be recognized about half the time. The rest of the time I just reboot and then things are OK. Many "fixes" have turned out to just be a result of this randomness. I've had things seem to work for days.

Recently I updated glib, pango and gtk+ and then gtkpod would no longer run. I also got the vanishing items in the Gnome Applications menu thing. I've down-graded glib and gtk+ and things are working, but Gentoo feels buggy.

zx2c4 · Developer Joined: 09 Jun 2005 Posts: 177

I am having the same problem with a firewire harddrive running 2.6.14.