Re: Hotplug blacklist and video devices

On Sat, 19 Feb 2005 12:29:13 +0000, Matthew Garrett
[off-list ref] wrote:

Jon Smirl [off-list ref] wrote:

quoted

For example I'm looking at making changes to DRM such that DRM will
require the corresponding framebuffer driver to be loaded. If you back
up further this is part of fixing X so that it won't mess with the
hardware from user space. Mode setting would come from the framebuffer
driver instead of the X 2D XAA driver.

Please don't until all the framebuffer drivers are able to deal with
suspend and resume (which will also require some mechanism to switch
backlights back on). Currently, it's far easier to restore some amount
of state on a standard VGA or VESA mode. There's no real support for
doing so with most accelerated framebuffers.

I didn't say make framebuffer depend on DRM, you can still unload DRM
before suspend.  It's the other way around DRM needs framebuffer.
Suspend/resume are part of this. In the current model there is no way
for the DRM driver to see the suspend/resume events. I haven't tried
it but I suspect a suspend/resume with DRM running has a bad outcome
right now.

-- 
Jon Smirl
jonsmirl@gmail.com


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