Re: New proposed DRM interface design

Helge Hafting
2004-09-07T08:38:52Z

Jon Smirl wrote:

>They have to be merged. Cards with two heads need the mode set on each
>head. fbdev only sets the mode on one head. If I teach fbdev how to
>set the mode of the other head fbdev needs to learn about memory
>management. The DRM memory management code is complex and is a big
>chunk of the driver.
>
>I would also like to fix things so that we can have two logged in
>users, one on each head. This isn't going to work if one them uses
>fbdev and keeps swithing the chip to 2D mode while the other user is
>in 3D mode. The chip needs to stay in 3D mode with the CP running.
>
>
>
Yes! I use the ruby patch and have two users logged in on the
two heads of a G550. It works fine - as long as no mode
change is attempted. And only one user can use 3D (or even 2D),
the other is stuck with a unaccelerated framebuffer.

>We're not going to get OOPS display while running X without merging.
>Something I would really like to have since I just had some and was
>force to hook up a serial console.
>
>
Also nice to have.

Helge Hafting