Help - can I do a hard reboot from usb?

Lanark1982 · 06-02-2015, 11:31 AM

Background - I have a kindle paperwhite with the screensaver hack. It got drowned after a coffee accident. I dried it out (or thought I had) and a few days later managed to get it to reboot from a reset by holding the power button in for a minute.

It worked for a very short while, but it's now stuck on a screensaver (with a darker line down the left side).

I've tried attaching with a usb cable to a laptop and it can find and search the kindle contents, so I was wondering if there was some way to initiate a hard reset via a USB cable to jump the screen into working again.

Any ideas? I'd hate to have to buy a new one.

knc1 · 06-02-2015, 11:41 AM

Ah, the Coffee and Toast problem.

The coffee was wasted and your PW2 is now toast.

Lanark1982 · 06-02-2015, 02:15 PM

Quote:

Originally Posted by knc1

Ah, the Coffee and Toast problem.

The coffee was wasted and your PW2 is now toast.

Are you saying there's nothing I can do? My laptop can see and read the kindle as a drive. I was wondering if there was something I could do while connected that would start it up.

Do I just leave it in a bag of rice indefinitely?

knc1 · 06-02-2015, 03:20 PM

If you have USB networking installed, yes you can re-boot it from the command line.
But I don't expect it will get any further in the process than discovering display errors.

If you don't have USB networking installed (or a serial port connection) - then no, you can't reboot 5.6.x from the USB mass storage mode that you see on an external PC.

I.E: Your Kindle is toast.

Lanark1982 · 06-02-2015, 03:51 PM

Is it the screen that's gone - is there anything likely to be gained by trying to dry it out further?

knc1 · 06-02-2015, 07:22 PM

It is not possible to say without the device on-hand.
Perhaps not even then.

For certain, do:
Open device (same directions as a PW1 - see our teardown links).

Disconnect the battery (you don't want to deep discharge the battery).
Disconnecting the battery is the only way to "turn off" a Kindle.

Continue to keep packed in well dried rice.
Try it (after re-charging) once a month.

NiLuJe · 06-02-2015, 07:59 PM

@Lanark1982:

there's an 'autoreboot' feature (diabled by default) in the ScreenSavers hack, but:
* it only reboots the framework, not the device
* you'd actually need to reboot the device to switch it on ^^

So, catch-22. That said, the hard-reboot via power button should always work (... unless the coffee borked the button

).

knc1 · 06-02-2015, 08:25 PM

Quote:

Originally Posted by NiLuJe

- - - -
That said, the hard-reboot via power button should always work (... unless the coffee borked the button

).

According to the O.P. - it does.
Just that the display is bork'd.

NiLuJe · 06-02-2015, 10:20 PM

Ooookay, so I missed something. Was the intent doing a *factory reset* over USB, instead of a reboot, as I initially understood?

Because that, you can do. (If only I had the link to ixtab's post on hand xD).

06-02-2015, 11:31 AM	#1
Lanark1982 Member Posts: 12 Karma: 10 Join Date: Jan 2014 Device: Kindle PW2 and a Meebook P78	Help - can I do a hard reboot from usb? Background - I have a kindle paperwhite with the screensaver hack. It got drowned after a coffee accident. I dried it out (or thought I had) and a few days later managed to get it to reboot from a reset by holding the power button in for a minute. It worked for a very short while, but it's now stuck on a screensaver (with a darker line down the left side). I've tried attaching with a usb cable to a laptop and it can find and search the kindle contents, so I was wondering if there was some way to initiate a hard reset via a USB cable to jump the screen into working again. Any ideas? I'd hate to have to buy a new one.

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06-02-2015, 11:41 AM	#2
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	Ah, the Coffee and Toast problem. The coffee was wasted and your PW2 is now toast.

06-02-2015, 03:20 PM	#4
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	If you have USB networking installed, yes you can re-boot it from the command line. But I don't expect it will get any further in the process than discovering display errors. If you don't have USB networking installed (or a serial port connection) - then no, you can't reboot 5.6.x from the USB mass storage mode that you see on an external PC. I.E: Your Kindle is toast.

06-02-2015, 03:51 PM	#5
Lanark1982 Member Posts: 12 Karma: 10 Join Date: Jan 2014 Device: Kindle PW2 and a Meebook P78	Is it the screen that's gone - is there anything likely to be gained by trying to dry it out further?

06-02-2015, 07:22 PM	#6
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	It is not possible to say without the device on-hand. Perhaps not even then. For certain, do: Open device (same directions as a PW1 - see our teardown links). Disconnect the battery (you don't want to deep discharge the battery). Disconnecting the battery is the only way to "turn off" a Kindle. Continue to keep packed in well dried rice. Try it (after re-charging) once a month.

06-02-2015, 07:59 PM	#7
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	@Lanark1982: there's an 'autoreboot' feature (diabled by default) in the ScreenSavers hack, but: * it only reboots the framework, not the device * you'd actually need to reboot the device to switch it on ^^ So, catch-22. That said, the hard-reboot via power button should always work (... unless the coffee borked the button ).

06-02-2015, 10:20 PM	#9
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Ooookay, so I missed something. Was the intent doing a factory reset over USB, instead of a reboot, as I initially understood? Because that, you can do. (If only I had the link to ixtab's post on hand xD).

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