Undefined video mode number : 317 (grml Linux)

[mtlynch]

A user reported that on grml Linux, an error message appears during boot:

Probind EDD (edd=off to disable)... ok
Undefined video mode number : 317
Press <ENTER> to see video modes available, <SPACE> to continue, or wait 30 sec

They don't see this when connecting other display devices, so this seems to be specific to TinyPilot