KMS: how to do modesetting on console?

[mlau]

Now that R300 KMS is in the kernel, I'm curious as to how one
does set a specific resolution outside X (i.e. on the framebuffer console).
I work a lot on the console; but the screen is large (1920x1200) and by default KMS sets to 1920x1200x32bpp, which makes scrolling _extremely_
slow and cpu-intensive (i.e. dmesg scrolling by takes ages).

So I want to set it to 1920x1200x8bpp to make scrolling a bit faster,
but I don't see how to do it. fbset doesn't work and generally reports
invalid ioctl or somesuch when trying to set a new resolution.

Any ideas?

[Nille]

Same question.

[Aostrich]

AFAIK, there is no way yet to change the resolution in KMS consoles...

[agd5f]

Dave recently posted some patches to dri-devel for setting the console modes on via the command line.

[nanonyme]

Hmm, I recall the framebuffer wasn't properly hardware-accelerated earlier. Is this still the case?

[agd5f]

Yes. It's not HW accelerated and likely won't ever be.

[mlau]

Yes. It's not HW accelerated and likely won't ever be.

Thats... unfortunate. What's missing is some sort of DRM-driven console? (a 'drmcon' instead of 'fbcon'?)

[nanonyme]

Thats... unfortunate. What's missing is some sort of DRM-driven console? (a 'drmcon' instead of 'fbcon'?)

Actually fbcon is using DRM framebuffer. I recall hearing security concerns related to using eg blits there.

[nhaehnle]

Some EGL-based hacks could be used to implement a hardware-accelerated console in user space. Obviously this would work on a "he who's interested in it should implement it" basis.

[mlau]

Yes. It's not HW accelerated and likely won't ever be.

Going back to my original question: Is it possible to set another videomode on the KMS-driven linux framebuffer console?