iPod nano shutdown = reboot ?

[superbeppe]

i'm using cvs-061021 on my ipod nano (1st gen)
i've problems with turning it off:

when i hold the play button for 5 seconds, it reports 'shutting down' then the screen turns black, the apple logo appears and it boots again in rockbox. so instead turning off it reboots :S

is this normal? how do i turn off my ipod nano?

[Chronon]

I have not experienced this with my nano.  You could try a different build and see if the problem persists.

[superbeppe]

ok, i figured out the problem was with the ipod itself, not the rockbox software. i returned it to the shop and got a new one, this time it's works like a charm...

[yeabirfday]

Any idea what kind of problem it was with the first ipod?  I just got one off of eBay (for the express purpose of installing Rockbox on it), and I'm getting the same problem: never shuts down, always reboots.  Even the auto-off causes a reboot.

I did notice that when booted into Apple firmware, holding a long play/pause won't make it go to standby either, but will show a "Charged" screen...

Since I got it off of eBay, I'm not sure what my repair options are.

Thanks for any help

[dreamlayers]

Does it constantly detect that a charger is plugged in (even when nothing is plugged in)?

[zajacattack]

See http://forums.rockbox.org/index.php?topic=15925.0 for a similar problem. I don't think a permanent solution has been found yet (although the links I provide in the thread offer some temporary ones).

[yeabirfday]

@ dreamlayers: yes, in apple firmware, it has the plug-over-battery icon, which I assume means it thinks it's plugged in.  But not in Rockbox (I forget if there's a separate icon.. I think there is)

@ zajacattack: yeah, those threads sound like my problem, thanks for the link.

so basically it sounds like a hardware thing, most likely the logic board.  In case anyone is interested or curious, I did somehow manage to reboot it into Diagnostic mode (something about low battery power, since I had to plug it into USB to get it to reboot *out* of it, otherwise, it just kept resetting into Diagnostic mode).  Oh yeah, the first time it happened I was rebooting out of apple firmware, but I don't know how much that had to do with it.

Under Status:
==============
LCD: 01
SrNm:#####
Mod#: MA099
HP: 0
FW_PWR_GOOD: 1
USBPWR_Det: 1
CHRG: 1
==============
I take it the "1" in the last two fields indicate that it thinks it's on USB power and is charging.

There's a Power test, too:
==============
Battery A2D
Battery=486
Battery=4.14V
Range:3.93-4.08V

VCC Main
VCC=428
VCC=4.00V
Range:3.84-4.04V

ACC A2D
Acc=1023
Acc=5.40V
Range:3.15-3.45V

Charge Current Test
Current=19
Current=0.01A
Range:0.185-0.225A
==============

and then while plugged in to USB (already in Diagnostic, plugged it in because it wasn't resetting back to normal or Rockbox firmware, ran the test before restarting):
==============
Battery A2D
Battery=1023   
Battery=5.40V
Range:3.93-4.08V

VCC Main
VCC=1023
VCC=5.40V
Range:3.84-4.04V

ACC A2D
Acc=1023
Acc=5.40V
Range:3.15-3.45V

Charge Current Test
Current=8
Current=0.00A
Range:0.185-0.225A
==============

I guess that's about all that I've learned.  Now to decide what my options are... (new logic board?  new battery to at least delay running down?  just deal with it?)

Thanks for the replies, I was (pleasantly) surprised how quickly responses came back.

[dreamlayers]

With the 5G iPod I posted about in a different thread, it would "shut down" from the Apple firmware, probably because there shutdown is actually sleep.  Could you see if you can shut down in the Apple firmware?  

If the Apple firmware can shut off in these cases then maybe a patch could be developed for Rockbox which causes off to actually be sleep.  I don't mean fully developing sleep support for Rockbox.  While that would be nice, it is outside the scope of this.  I mean off being sleep but with Rockbox restarting after the device is turned on.  This might not be hard to do.

[Chronon]

I don't think there's a way to do what you want.  Only the Apple firmware currently has a sleep function.  In order to sleep the unit the Apple firmware must be running.  When the unit wakes back up it will wake back into the Apple firmware.  I don't see how to force it to reboot into Rockbox from sleep without modifying the Apple firmware itself -- or implementing a proper sleep function within Rockbox.  

[yeabirfday]

it seems like my ipod is opposite of the 5G dreamlayers posted about: regular battery icon, no plug icon in Rockbox (I don't know about when it's actually plugged in because I don't have a usb charger/adapter, only a cable that I plug into my computer, which makes it go to disk mode), and plug icon while in Apple firmware.  Rockbox does show the battery as always being full (and reports it at 100% in Rockbox Info), meaning I have no idea when it's about to die on me.  

Going to sleep/standby in apple makes it think it's sleeping while plugged in - the backlight is off, but the screen shows a (large) battery with a plug over it and at the top it says, "Charged".

[yeabirfday]

AHA!!  So since I got it for so cheap on eBay (well... relatively), I just opened it up, following directions for replacing logic boards (iFixit, I believe).  Lo and behold, here and there on close inspection there was some grayish gunk on the board near terminals and between .. transistors? sometimes making connections.  I dunno if it was rust, and if it was, don't know if it was conducting, but I scraped off as much as I could (without causing damage) around things that looked like transistors, the power contacts near the bottom, and even between the contacts to what I think were the memory chips (black rectangles closest to the connector port).  And it worked!  It shuts down now!  And shows actual battery level, in both firmwares!

Previous owner might have dropped it in some liquid. Just hope it wasn't the toilet...

I also am kind of annoyed that I already left feedback, considering s/he could have warned me about the shutdown thing (since it was happening in Apple firmware).  But all's well that ends well.

Of course, I may have to open it up again, since I'm not sure I pushed the click wheel ribbon far enough in... kind of goes wonky on rare occasion.  But I know that's fixable, and I know how to fix it!

Hope this will help other people with similar problems, although I guess one would suspect it from already knowing it fell into a puddle/lake/sink/what-have-you.

[Chronon]

While this info might help some people, it may be even more helpful on a wiki page.  Perhaps on an FAQ or a troubleshooting page?

Also, the forum guidelines ask that you modify your previous message rather than posting a new one if no one else has posted yet.

[trailofdead]

i have the same problem.  using the latest release version 3.3 on a 1g 2gb nano.  when i hold the play/pause button it says shutting down, and it goes to the apple logo and back into rockbox.  if i put the hold switch on it will go into the apple firmware and i can turn it off from there, but then i have to reset with menu and select to get back into rockbox. 

my ipod does not think it's always charging.  i have had no problems shutting down before rockbox.  this problem has been occuring ever since i've started using rockbox.  i have not tried any other versions.  my ipod is in pristine condition and has never been wet or exposed to highly humid conditions.  i'm tempted to try to pry it open to see if there's any corrosion or anything like yeabirfday had, but as i said, it's in pristine condition and i dont want to risk damaging the casing if i dont have to. 

can anyone help fix this problem?