PE: Odd Whitescreen Finding

muranternet · 07-11-2011, 01:42 AM

In another thread I mentioned that I had run into a couple instances where I got whitescreened coming out of sleep mode on the LCD side and had to bring up the power off dialog to get out of it. I just had it happen again. This time, I let it go dark again and then folded in the PE to a standard "book" form, then hit Menu again, and got no whitescreen. It seems that on my unit anyway coming out of sleep with the screen folded back (like a stand) results in a blank LCD. Has anyone else run into this?

Bug: Coming out of sleep using the Menu key while the PE is folded back results in a white screen.

Environment: Power adapter not plugged in, ermine, rooted, running both the original home and ADW home. Doesn't matter is a USB keyboard is plugged in or not.

Filark · 07-11-2011, 03:14 AM

That might make some sense if the problem is in the wiring in the hinge, as some (sorry, I forget who) have suggested.

emusan · 07-11-2011, 09:19 AM

I have also had this happen(I wouldn't really call it a problem, just an inconvenience), I don't think its related to the other white screen, at least not directly. While the other white screen is almost definitely a hardware issue, this one seems more like software. I would kinda guess it has to do with the signals to the LCD getting garbled when first turning on, though I really don't know if/how that could happen.

muranternet · 07-13-2011, 05:23 PM

Update: I've noticed inconsistent behavior on a screen fold, but one thing that seems to remain constant is excessive heat on the eInk side when the hinge is backfolded. This mayalso explain some of the complaints from users saying the eINk screen gets very hot: they are folding the LCD behind the eInk screen as demonstrated in videos from enTourage and are getting heat buildup as a result. I should take a look at that explosed teardown view to see what's going on here once I get done with my phone removal battery benchmarks.

kennyminot · 07-13-2011, 10:55 PM

Hmmmm . . . that's interesting! I don't fold the LCD behind the e-ink very often (I like to hold as a book). Maybe that's why I never noticed the heat problem.

07-11-2011, 01:42 AM	#1
muranternet Connoisseur Posts: 75 Karma: 10 Join Date: May 2011 Device: Kindle 3/Sony PRS-300/Nook Color running CM7/P eDGe	PE: Odd Whitescreen Finding In another thread I mentioned that I had run into a couple instances where I got whitescreened coming out of sleep mode on the LCD side and had to bring up the power off dialog to get out of it. I just had it happen again. This time, I let it go dark again and then folded in the PE to a standard "book" form, then hit Menu again, and got no whitescreen. It seems that on my unit anyway coming out of sleep with the screen folded back (like a stand) results in a blank LCD. Has anyone else run into this? Bug: Coming out of sleep using the Menu key while the PE is folded back results in a white screen. Environment: Power adapter not plugged in, ermine, rooted, running both the original home and ADW home. Doesn't matter is a USB keyboard is plugged in or not.

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07-11-2011, 03:14 AM	#2
Filark Armed with a smile :) Posts: 1,421 Karma: 2463560 Join Date: Sep 2009 Location: California, USA Device: enTourage eDGe & Pocket eDGe, Samsung Galaxy Note II	That might make some sense if the problem is in the wiring in the hinge, as some (sorry, I forget who) have suggested.

07-11-2011, 09:19 AM	#3
emusan lol Posts: 472 Karma: 1031 Join Date: May 2011 Device: eDGe	I have also had this happen(I wouldn't really call it a problem, just an inconvenience), I don't think its related to the other white screen, at least not directly. While the other white screen is almost definitely a hardware issue, this one seems more like software. I would kinda guess it has to do with the signals to the LCD getting garbled when first turning on, though I really don't know if/how that could happen.

07-13-2011, 05:23 PM	#4
muranternet Connoisseur Posts: 75 Karma: 10 Join Date: May 2011 Device: Kindle 3/Sony PRS-300/Nook Color running CM7/P eDGe	Update: I've noticed inconsistent behavior on a screen fold, but one thing that seems to remain constant is excessive heat on the eInk side when the hinge is backfolded. This mayalso explain some of the complaints from users saying the eINk screen gets very hot: they are folding the LCD behind the eInk screen as demonstrated in videos from enTourage and are getting heat buildup as a result. I should take a look at that explosed teardown view to see what's going on here once I get done with my phone removal battery benchmarks.

07-13-2011, 10:55 PM	#5
kennyminot Groupie Posts: 183 Karma: 90022 Join Date: May 2011 Location: Louisville, KY Device: HTC EVO View 4G, HTC Wildfire S, Asus T91MT	Hmmmm . . . that's interesting! I don't fold the LCD behind the e-ink very often (I like to hold as a book). Maybe that's why I never noticed the heat problem.

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