Battery experience with firmware v4.1.7729 - Page 4

macjohnmcc · 10-15-2016, 11:47 AM

This morning I woke up at 4:30am and looked over to see light coming from the USB port on my KA1. It has the kobo leather cover but even with it fully closed (no other light leakage) it was still on. The battery went from 70% at 11pm to about 8% at 4:30am.

Question Mark · 10-15-2016, 12:36 PM

My KA1, which lives in its sleepcover, seems to be doing just fine since the firmware update. No problems. But, thankfully, I wasn't experiencing any battery issues before the update.

Very happy with this ereader. Just wish that they would improve the PDF experience.

davidfor · 10-15-2016, 09:29 PM

Quote:

Originally Posted by macjohnmcc

This morning I woke up at 4:30am and looked over to see light coming from the USB port on my KA1. It has the kobo leather cover but even with it fully closed (no other light leakage) it was still on. The battery went from 70% at 11pm to about 8% at 4:30am.

Did it go to sleep when you closed the cover? Was there any sign of activity on the device? Though, at 4:30am, I'll completely understand if you didn't notice

pclewis · 10-16-2016, 08:04 AM

I have been running the new firmware for several days now and I think it solved the battery issue. I did have one battery drain, but fairly sure the slip cover did not put the unit to sleep. I have been peeking under the cover to check that. Anyway, load the new firmware and report if you still have problems.

Zaroff · 10-16-2016, 08:08 AM

I noticed something even stranger: the cover does put the unit to sleep, but even then, the battery continues to drain. The solution for that (it worked this night) was to untick the auto sleep function in the settings. I lost only 1%... Whereas if I left that checked, I'd loose 10+ % easily.
So instead of enabling the auto option, I press the back button to put the unit to sleep.

ballfresno · 10-16-2016, 02:26 PM

I also still have problems with the sleep cover. Have disabled auto-sleep again. Otherwise, no battery drain problems.

jackastor · 10-16-2016, 08:14 PM

Quote:

Originally Posted by ballfresno

I also still have problems with the sleep cover. Have disabled auto-sleep again. Otherwise, no battery drain problems.

My battery drained from 97% to recharge overnight with the sleep cover as well.. with the new firmware.

davidfor · 10-17-2016, 12:26 AM

Quote:

Originally Posted by jackastor

My battery drained from 97% to recharge overnight with the sleep cover as well.. with the new firmware.

Is the device actually going to sleep when you close the cover? You would only be able to tell by if there is no light leakage around the USB port or the edges of the cover, or if you briefly see the sleep screen when you open the device.

Tests I'd like to see done:

- Let the device auto sleep and not close the cover.
- Let the device auto sleep and then close the cover.
- Use another magnet to get the device to sleep and then close the cover.

What I am thinking of is that there was a problem a while ago where some covers had something that would touch the screen of the device as they closed. This interfered with the sleep in some way. It would appear to sleep, but power was being used.

With the Aura ONE, the cover is touching the screen. Something like the above could be happening and triggering something that is preventing the device from sleeping properly.

Katsunami · 10-17-2016, 04:11 AM

Is there a difference between auto-sleep and the cover's sleep/wake function?

I can imagine that the auto-sleep function is used to put the reader to sleep if you leave it open and don't turn a page for X minutes, but the sleep/wake magnet should put the reader to sleep even if the auto-sleep function is turned off.

davidfor · 10-17-2016, 05:50 AM

Quote:

Originally Posted by Katsunami

Is there a difference between auto-sleep and the cover's sleep/wake function?

I can imagine that the auto-sleep function is used to put the reader to sleep if you leave it open and don't turn a page for X minutes, but the sleep/wake magnet should put the reader to sleep even if the auto-sleep function is turned off.

The result should be the same. And they should be independent of each other. ie. don't close the cover and the auto sleep kicks in, close the cover and it goes to sleep and nothing happens when the auto sleep timer would have run out.

There have been bugs in both. I mentioned the something touching the screen when the sleep cover was closed. The device seemed to be sleeping but something was using power. I think the conclusion was that the IR sensor and emitters weren't being turned of. And on the other side, there was a bug where the sleep time wasn't reset when the cover was closed. Close the cover just before the timer expired and when you opened it, the device woke and a few seconds later it went to sleep.

As people have said there are page turns happening when the cover is closed, it makes we wonder if something about how the cover touches the screen is affecting the sleep.

Katsunami · 10-17-2016, 07:04 AM

I wonder what my third party cover is going to do.

With the KPW1 this isn't a problem, because it has a sunken screen, and the cover even covers the bezels, so there are two steps down between the cover flap and the screen. This is an advantage of a reader with a non-flush screen, it seems.

jackastor · 10-17-2016, 07:31 AM

Quote:

Originally Posted by davidfor

Is the device actually going to sleep when you close the cover? You would only be able to tell by if there is no light leakage around the USB port or the edges of the cover, or if you briefly see the sleep screen when you open the device.

Tests I'd like to see done:

- Let the device auto sleep and not close the cover.
- Let the device auto sleep and then close the cover.
- Use another magnet to get the device to sleep and then close the cover.

What I am thinking of is that there was a problem a while ago where some covers had something that would touch the screen of the device as they closed. This interfered with the sleep in some way. It would appear to sleep, but power was being used.

With the Aura ONE, the cover is touching the screen. Something like the above could be happening and triggering something that is preventing the device from sleeping properly.

Hmmm good considerations. I should add though that wifi was on and I did turn it off. Was at work last night, KA1 is still sleeping. So when I wake up later I'll check power levels.

Regards.

Jack

macjohnmcc · 10-17-2016, 11:01 AM

I cannot imagine that the cover touches the display waking it as I have put it into a tight (not crushing) space in my backpack and it didn't start and drain the battery.

DNSB · 10-17-2016, 12:29 PM

Quote:

Originally Posted by macjohnmcc

I cannot imagine that the cover touches the display waking it as I have put it into a tight (not crushing) space in my backpack and it didn't start and drain the battery.

I am wondering if this is why on the KA1, people are reporting random page fliips when closing/opening the sleep cover. Possibly when the cover is touching the screen before the magnet triggers the sleep function.

jiminrussell · 10-17-2016, 02:23 PM

Quote:

Originally Posted by DNSB

I am wondering if this is why on the KA1, people are reporting random page fliips when closing/opening the sleep cover. Possibly when the cover is touching the screen before the magnet triggers the sleep function.

But the screen is capacitive touch isn't it, an inanimate object like the cover shouldn't trigger a touch event should it? And yet it seems to do just that.

I find if I let the bottom right part of the cover touch the screen first it goes to sleep fine but if I just flip it closed without paying attention to what part touches the screen first I some times end up with selected text or on a different page, usually forward one page but sometimes back a page, but not seeing the large battery drain some others are seeing (at least not so far since updating to 4.1.7729).

10-17-2016, 11:01 AM	#58
macjohnmcc Member Posts: 13 Karma: 99846 Join Date: Mar 2009 Device: Kobo Aura One	I cannot imagine that the cover touches the display waking it as I have put it into a tight (not crushing) space in my backpack and it didn't start and drain the battery. Last edited by macjohnmcc; 10-17-2016 at 11:50 AM.

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10-15-2016, 11:47 AM	#46
macjohnmcc Member Posts: 13 Karma: 99846 Join Date: Mar 2009 Device: Kobo Aura One	This morning I woke up at 4:30am and looked over to see light coming from the USB port on my KA1. It has the kobo leather cover but even with it fully closed (no other light leakage) it was still on. The battery went from 70% at 11pm to about 8% at 4:30am.

10-15-2016, 12:36 PM	#47
Question Mark Wizard Posts: 1,414 Karma: 6513838 Join Date: Mar 2016 Device: More than I need, but not as many as I would like.	My KA1, which lives in its sleepcover, seems to be doing just fine since the firmware update. No problems. But, thankfully, I wasn't experiencing any battery issues before the update. Very happy with this ereader. Just wish that they would improve the PDF experience.

10-16-2016, 08:04 AM	#49
pclewis Enthusiast Posts: 32 Karma: 14644 Join Date: Jan 2007 Location: Texas Device: Kobo Aura One	I have been running the new firmware for several days now and I think it solved the battery issue. I did have one battery drain, but fairly sure the slip cover did not put the unit to sleep. I have been peeking under the cover to check that. Anyway, load the new firmware and report if you still have problems.

10-16-2016, 08:08 AM	#50
Zaroff Connoisseur Posts: 61 Karma: 29280 Join Date: Sep 2016 Device: Kobo Aura One	I noticed something even stranger: the cover does put the unit to sleep, but even then, the battery continues to drain. The solution for that (it worked this night) was to untick the auto sleep function in the settings. I lost only 1%... Whereas if I left that checked, I'd loose 10+ % easily. So instead of enabling the auto option, I press the back button to put the unit to sleep.

10-16-2016, 02:26 PM	#51
ballfresno Addict Posts: 245 Karma: 4197114 Join Date: Oct 2011 Location: UK Device: Kobo (Sage, Aura One, Aura HD, & Touch); reMarkable tablet.	I also still have problems with the sleep cover. Have disabled auto-sleep again. Otherwise, no battery drain problems.

10-17-2016, 04:11 AM	#54
Katsunami Grand Sorcerer Posts: 6,111 Karma: 34000001 Join Date: Mar 2008 Device: KPW1, KA1	Is there a difference between auto-sleep and the cover's sleep/wake function? I can imagine that the auto-sleep function is used to put the reader to sleep if you leave it open and don't turn a page for X minutes, but the sleep/wake magnet should put the reader to sleep even if the auto-sleep function is turned off.

10-17-2016, 07:04 AM	#56
Katsunami Grand Sorcerer Posts: 6,111 Karma: 34000001 Join Date: Mar 2008 Device: KPW1, KA1	I wonder what my third party cover is going to do. With the KPW1 this isn't a problem, because it has a sunken screen, and the cover even covers the bezels, so there are two steps down between the cover flap and the screen. This is an advantage of a reader with a non-flush screen, it seems.

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