I downgraded to 20.04 kernel (5.4.x) and I am still getting the black flashes.
BTW, the journal seems to expose the username, so you should warn about that before requesting it.
I downgraded to 20.04 kernel (5.4.x) and I am still getting the black flashes.
BTW, the journal seems to expose the username, so you should warn about that before requesting it.