Thank you all for the responses! OK, I've pulled the custom wallpaper and will report back if it seems to help -- probably take a week or more to gather data (I am only here part-time, and they only use the Chromebooks part of the time.) 

Rochelle, have you checked under Device management *and* User management? It's possible to set it in either/both places:

Inline image 1Inline image 2

-- MB

On Tue, Dec 5, 2017 at 11:47 AM, Rochelle Garfinkel <[log in to unmask]> wrote:
Yes I'm seeing this on the same model device! It is intermittent and usually goes away after a restart. 

Curious if everyone that is seeing this has a custom wallpaper on managed devices. 

Possible hijack to the topic: I have also had a problem with the wallpaper I uploaded at the beginning of the year not going away even though I have changed it twice since. The new one (which shows as current in device settings) only flashes before login, and the old one is still there after login. Is anyone else experiencing this? 

Rochelle Garfinkel, MLS
Librarian & EdTech Integration Specialist

Marlboro School
PO Box D


On Tue, Dec 5, 2017 at 11:42 AM, Hadley Markoski <[log in to unmask]> wrote:
I've seen this as well, usually accompanied with an error about the "monitor is not getting along with your chromebook".

I also found that it was just on the login screen, and if I was able to guess where to click to log in as the user, the issue would go away and the chromebook would function normally. 

The error made me think it was an issue with the hardware, or possibly the background image being displayed. A reboot usually did fix it and I haven't seen the issue resurface in a while. Very curious if anyone has any information on it though.

On Tue, Dec 5, 2017 at 11:36 AM, Marion Bates <[log in to unmask]> wrote:
Hi all,

I work in a school that has a cart of CTL NL61 Chromebooks, bought last summer. Over the past couple or three weeks, teachers have been reporting that sometimes when the kids open the lid, it starts to boot/wake, but then instead of the normal login screen, it shows an odd pattern or tiling:

Inline image 1

(Note that the wifi, battery signal, etc. stuff in the lower right is displaying fine.) When this happens, there's no cursor or text visible. Clicking or mashing keys sometimes causes the tiles to shift around a bit. The only fix is to reboot the thing. It seems to affect any/all of them intermittently (18 total.) We're on version 62.0.3202.97 and we are using device management. 

Has anyone else noticed this? Maybe I should dump the custom background? <- I *think* that's what's being mis-displayed here...it's supposed to be a lake scene with a reflection, but a bit less MOMA than this rendition.

Thanks,

-- MB

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Ms. Hadley Markoski
Network Administrator

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