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Old 11-01-2022, 03:52 PM   #1
Xyz
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Join Date: Jul 2022
Posts: 3
Default Manufacturing Test Mode (Basic)

Hi,

As part of an OS update project there are approx 100 devices with DisplayLink screens being upgraded from Ubuntu 18.04 to Ubuntu 22.04.

There are 2 models of DisplayLink screen involved, the first model has upgraded correctly and works without any problem. This one shows up in `lsusb` as below
Code:
  idVendor           0x17e9 DisplayLink
  idProduct          0xff00
  bcdDevice           47.60
  iProduct                2  OLC-TOUCH10.1
  iSerial                 3 1179322TWJANL461743
The second model of screen has stopped working after the update and refuses to work even when the OS is rolled back to Ubuntu 18.04.

This is the screen before the update:
Code:
  idVendor           0x17e9 DisplayLink
  idProduct          0xff00
  bcdDevice           74.37
  iProduct                2 OLC-TOUCH10.1
  iSerial                 3 DSIP293TWJANM200232
After the update the screen stays blank, the serial number has changed and it is showing up as being in a manufacturing test mode:
Code:
  idVendor           0x17e9 DisplayLink
  idProduct          0xff00
  bcdDevice           74.37
  iProduct                2 Manufacturing Test Mode (Basic)
  iSerial                 3 DSIP293DL4121-02.A5D.934
All this type of screen we have tried so far (5) have failed in the same way.
Please can you advise how we can recover these broken screens and how we can upgrade without having this issue?
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Old 11-14-2022, 11:43 AM   #2
KatarzynaKowalczyk
DisplayLink Tech Support
 
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Join Date: Apr 2020
Posts: 332
Default

Hello,

Can you please tell us more about your configuration - also please point us to the exact product you see this issue with - the exact model.
Please also tell us how the devices are connected and what version of the DisplayLink driver you are using.

Also if you could gather logfiles for further analysis?
The instructions to how to go about that are here:

https://support.displaylink.com/know...to-displaylink

Please post the logfiles as attachment here or send them with a link to this post or brief description directly to our support to technical-enquiries@synaptics.com .
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