On Wed, May 29, 2019 at 3:17 AM Brian Masney <masneyb@xxxxxxxxxxxxx> wrote: > It's in low speed mode but its usable. How low speed is that? > I assume that it's related to the > vblank events not working properly? They are only waiting for 50 ms before timing out, I raised it to 100ms in the -next kernel. I'm still suspicious about this even though I think you said this was not the problem. For a command mode panel in LP mode it will nevertheless be more than 100ms for sure, the update is visible to the naked eye. Raise it to 10000 ms or something and see what happens. drivers/gpu/drm/drm_atomic_helper.c: msecs_to_jiffies(50) Yours, Linus Walleij
