re: 11-BETA, WebGL, modesetting and Radeon HD-5450: breaks X

[matthew green <mrg%eterna23.net@localhost>]

> > one thing i've noticed the radeon driver still has issues with some
> > sort of cache issue, where the display is incorrect some relatively
> > large portion of the time, menus wrong, that clear up when you move
> > the cursor near them, weird pixelated stuff.  it only happens really
> > poorly on one specific system for me -- a "AMD E2-7110 APU with AMD
> > Radeon R2 Graphics" laptop, that seems to be the last generation of
> > APUs that used "radeon" instead of "amdgpu" (i have another laptop
> > with a very slighty older CPU -- same micro-arch, bulldozer#4 -- but
> > comes with amdgpu that works fine.
> >
> > anyway, i wonder if the ring timeouts are because values aren't 
> > making it into the right place in time (bad cache flush type thing?)
>
> Isn't that basically what we see with amdgpu?
>
> A GPU on the other side of a PCIe bus works but those sharing memory
> with the CPU don't.

i haven't seen that on amdgpu for ages.  if i find time, i'll
try out my RX 550 again soon.


.mrg.