Please clarify: Who are seeing the scrambled image? (just the Admin?)

Yes, The "scrambled" image is on the Admin console side only.

As per customer's information the issue does not occur when the device is rolled back to version 49.

I attached the logs when customer uses v49 on Samsung Chromebook 2 without any issues.

Samsung-Chromebook 2: chrome://gpu
https://drive.google.com/a/google.com/file/d/0B8hJbBKk0-c4Q2xyaW1vQ082Qnc/view?usp=sharing

Samsung-Chromebook 2 debug logs
https://drive.google.com/a/google.com/file/d/0B8hJbBKk0-c4aXcyQWdCaWpUOUU/view?usp=sharing

Please confirm if it was verified in 49? May be a bisect will help?

mlight@ - please help bisect this as well. Looks like the issue started somewhere between M49 and M51. You can start by repro'ing this on the last M49 stable push (7834.70.0) and the first M50 stable push (7978.62.0) followed by last M50 stable (7978.76.0) and first M51 stable (8172.47.0) and go from there.

I am probably making some newbie error.  In my test domain (crosprqa4.com, OU=Engineering > Development), I can tell Cpanel to add the apps/extensions mentioned, [Cpanel says they will be force-installed] but on my client (a ninja, running M53-8530.5.0), the apps/extensions do not show up, even after a reboot.

Attempting to manually install them via a chrome browser (chrome://extensions > Get more extensions) works for the first two: 
   Hapara Interact Extension>>>> iehakgpdecaomokcdicdigpbmipnllcg
   NetSupport School Student>>>> gcjpefhffmcgplgklffgbebganmhffje

but the NetSupport School Tutor (jonibifpnngomfjofnmbjiloialpcaan) gets an error box:  "Ooops   NetSupport School Tutor [...] is blocked by the administrator."  I don't think that I am the admin it is talking about.

At this point I am unable to reproduce the problem.

Is the admin monitoring the student devices using Cpanel or some other tool?

For NetSupport: 

For a teacher to be able to monitor and interact with their students' Chromebooks, the NetSupport Name & Connectivity Server must be installed on a Windows Server; the NetSupport School Tutor app for Google Chrome must be installed on the teacher's Chrome OS machine or for mixed platform classrooms, the NetSupport School Windows Tutor application can also connect to student Chromebooks; and the NetSupport School Student extension installed onto each of the students' Chromebooks.

NetSupport School Tutor app (jonibifpnngomfjofnmbjiloialpcaan)
NetSupport School Student app (gcjpefhffmcgplgklffgbebganmhffje)
NetSupport Name & Connectivity Server http://www.netsupportschool.com/downloads.asp

This is the information found at http://www.netsupportschool.com/chrome/.

From what I understand, they must force install the NetSupport School Student app and in the Admin Console go to App Management, locate NetSupport School Student app and add a configuration file (config.json). This JSON file is obtained after manually configuring the extension in one computer, and the extension has an option called "Export As File", the configuration looks like this https://drive.google.com/a/google.com/file/d/0BwAbWcJQTLUlN2czbjV0Q1dYRGM

Then, the teacher must use the NetSupport Name & Connectivity Server in the Windows Server machine and have the extension NetSupport School Tutor app installed to monitor the users, as far as I understand.

Regarding Hapara Interact Extension, it seems the extension's name has been changed but we're waiting on the admin's response to verify if the behavior has changed or if they still monitor the devices via the website https://www.teacherdashboard.com/#/welcome 

Is there an update on this bug? If there's more information needed for the investigation please let me know. 

Hi Oscar, please work with Soushi and the customer to determine which component(s) of the above system are actually causing the problem. It is most likely a mis-configuration of Windows OS, an external application (e.g., NetSupport Name & Connectivity Server), or a Chrome App (e.g., 'NetSupport School Tutor' or the 'NetSupport School Student' extension). The fact that it works on some devices, or with earlier releases of Chrome OS, can provide you clues, but is most likely a happy coincidence.

Sadly, Chrome OS TE does not have the resources to work with customers to debug the myriad of possible configurations and setups external to Chrome OS.

Assigning to Soushi, since I can't find the @chromium.org account for Oscar.

I am 'the customer' how can I help to resolve this issue.

Activating. Please assign to the right owner and the appropriate priority.

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Untriaged w/ owner -> Assigned

Hello!
This bug is receiving this notice because there has been no acknowledgment of its existence in quite a bit of time.
- If you are currently working on this bug, please provide an update.
- If you are currently affected by this bug, please update with your current symptoms and relevant logs.

If there has been no updates provided by EOD Wednesday, 12/12/18 (5pm EST), this bug will be archived and can be re-opened at any time deemed necessary.

Thank you!

Due to lack of action this bug has been Archived. If work is still being done on this issue or you are still experiencing this issue please feel free to re-open with the appropriate information.