drm/ast something ate high-res modes (5.3->5.6 regression)

[Ilpo Järvinen]

On Thu, 17 Sep 2020, Thomas Zimmermann wrote:

> Hi
> 
> Am 17.09.20 um 13:17 schrieb Ilpo Järvinen:
> > Hi,
> > 
> > Yes, I can build custom kernels and test but I won't have time for that 
> > before the end of September so I'll do it only then.
> 
> No problem, that's still fine.
> 
> Best regards
> Thomas
> 
> > 
> > And thanks a lot :-).
> > 

The high-res mode works, however, I wasn't expecting it to be this slow 
though as I can see the slowish sweeps to redraw the screen or large parts 
of it. Maybe you meant all along this slow (I was expecting something like 
memcpy slow and this looks definitely much slower)?

While a large redrawing operation is going on, mouse cursor stops moving 
normally until it is over and it then jumps to catch up. When the mouse is 
over something that doesn't require large redraw, it seems to work quite 
normally.

-- 
 i.