Kindle Basic stuck on KOReader screen saver and not rebooting.

QBit99 · 12-22-2023, 02:25 PM

I managed to jailbreak it using the latest jailbreak for FW 5.15.1.1
I've tried holding the power button for 20, 40 seconds, the device is still not rebooting. It seems to be stuck in sleep mode or something
I've attached a picture

arooni · 12-22-2023, 08:47 PM

Can you ssh in and kill the koreader process?

Does it make sense to set up the ssh access upon system start so apps like this one could be killed if they don't cooperate?

NiLuJe · 12-23-2023, 12:02 AM

A hard-reboot attempt not doing *anything* is fairly suspicious. Keep in mind the long-long-press is actually a hard *poweroff*, not a hard *reboot*. You'll want to follow with a tamer long press to actually power it back on.

What happens if you plug it to a *wall* charger?

@arooni: Irrelevant, if the device is in suspend or hibernation, well, it's in suspend or hibernation, it's dead to the world until awoken.

QBit99 · 12-23-2023, 04:27 AM

When plugged to a wall charger the device simply starts charging but it stays in sleep mode.
The constant long press of the power button ended up draining the battery as the screen's lights kept flashing. It switched off and i let it charge back up to the point it could switch on again. That's how it came back to life.
Could it be related to KOReader remaining opened for days? I hardly ever close it unless i wanna grab screenshots/send files through Kual file browser

Marek · 12-23-2023, 07:24 AM

Quote:

Originally Posted by QBit99

When plugged to a wall charger the device simply starts charging but it stays in sleep mode.
The constant long press of the power button ended up draining the battery as the screen's lights kept flashing. It switched off and i let it charge back up to the point it could switch on again. That's how it came back to life.
Could it be related to KOReader remaining opened for days? I hardly ever close it unless i wanna grab screenshots/send files through Kual file browser

Ive had KOreader open for more than a week (maybe 2?) and everything seems fine, which version of the kindle FW are you on? And do i understand correctly that it came back to life?

QBit99 · 12-23-2023, 08:20 AM

Quote:

Originally Posted by Marek

Ive had KOreader open for more than a week (maybe 2?) and everything seems fine, which version of the kindle FW are you on? And do i understand correctly that it came back to life?

I saw on Amazon's forum that somebody had the same issue and they suggested that plugs the kindle to a wall charger and press-hold the power button for 20 seconds.
I did the same but kept mine pressed more than 2 minutes (20 seconds solved nothing). Somehow i ended up with the battery low icon on the screen instead of what's on the picture i upload. I let the device charge, 5 ~ 7 minutes later it switched itself on normally.
I'm on FW 5.16.2.1.1

NiLuJe · 12-23-2023, 10:59 AM

Userland has no say in the matter once the device is in suspend or hibernation, so KOReader should be an absolute non-factor here (especially on Kindle, where we don't handle *any* power management, everything's deferred to the native system, so it behaves exactly as usual).

mergen3107 · 12-23-2023, 12:48 PM

Battery might be dead.

QBit99 · 12-23-2023, 02:33 PM

Quote:

Originally Posted by mergen3107

Battery might be dead.

Battery's just fine mate! The device is less than a year old

mergen3107 · 12-23-2023, 02:35 PM

This doesn’t warrant anything unless you check full battery capacity and compare against designed value.

muggleMode · 12-26-2023, 08:52 PM

maybe if you wait for the battery to die, then maybe it can "turn on"... good luck

12-22-2023, 02:25 PM	#1
QBit99 Enthusiast Posts: 35 Karma: 10 Join Date: Apr 2022 Device: Kindle Basic 11th Gen	Kindle Basic stuck on KOReader screen saver and not rebooting. I managed to jailbreak it using the latest jailbreak for FW 5.15.1.1 I've tried holding the power button for 20, 40 seconds, the device is still not rebooting. It seems to be stuck in sleep mode or something I've attached a picture Attached Thumbnails

12-23-2023, 12:02 AM	#3
NiLuJe BLAM! Posts: 13,506 Karma: 26047190 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	A hard-reboot attempt not doing anything is fairly suspicious. Keep in mind the long-long-press is actually a hard poweroff, not a hard reboot. You'll want to follow with a tamer long press to actually power it back on. What happens if you plug it to a wall charger? @arooni: Irrelevant, if the device is in suspend or hibernation, well, it's in suspend or hibernation, it's dead to the world until awoken. Last edited by NiLuJe; 12-23-2023 at 12:06 AM.

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12-22-2023, 08:47 PM	#2
arooni Addict Posts: 315 Karma: 26 Join Date: Jul 2012 Device: Kindle Paperwhite 4 (2018)	Can you ssh in and kill the koreader process? Does it make sense to set up the ssh access upon system start so apps like this one could be killed if they don't cooperate?

12-23-2023, 04:27 AM	#4
QBit99 Enthusiast Posts: 35 Karma: 10 Join Date: Apr 2022 Device: Kindle Basic 11th Gen	When plugged to a wall charger the device simply starts charging but it stays in sleep mode. The constant long press of the power button ended up draining the battery as the screen's lights kept flashing. It switched off and i let it charge back up to the point it could switch on again. That's how it came back to life. Could it be related to KOReader remaining opened for days? I hardly ever close it unless i wanna grab screenshots/send files through Kual file browser

12-23-2023, 10:59 AM	#7
NiLuJe BLAM! Posts: 13,506 Karma: 26047190 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Userland has no say in the matter once the device is in suspend or hibernation, so KOReader should be an absolute non-factor here (especially on Kindle, where we don't handle any power management, everything's deferred to the native system, so it behaves exactly as usual).

12-23-2023, 12:48 PM	#8
mergen3107 Wizard Posts: 1,499 Karma: 5000046 Join Date: Feb 2012 Location: Cape Canaveral Device: Kindle Scribe	Battery might be dead.

12-23-2023, 02:35 PM	#10
mergen3107 Wizard Posts: 1,499 Karma: 5000046 Join Date: Feb 2012 Location: Cape Canaveral Device: Kindle Scribe	This doesn’t warrant anything unless you check full battery capacity and compare against designed value.

12-26-2023, 08:52 PM	#11
muggleMode Enthusiast Posts: 28 Karma: 10 Join Date: May 2022 Device: PW5	maybe if you wait for the battery to die, then maybe it can "turn on"... good luck