Hibernate and Restriced Drivers (Was: 4 More days...)

Matthew Garrett mjg59 at srcf.ucam.org
Thu Oct 18 15:25:14 UTC 2007

On Tue, Oct 16, 2007 at 09:33:22PM +0200, Paulus Esterhazy wrote:

> This bug, or this group of bugs, will be a source of annoyance to many
> users. Basically, when you use restricted drivers (both NVidia and ATI),
> your system will fail to resume from hibernation most of the time. As
> restricted drivers are enabled by default, this should be considered a
> regression from feisty.

They are?

> I hope this doesn't sound ungrateful. Ubuntu developers are doing a very
> good job overall, and dealing with binary blobs isn't an easy task. It's
> alright to know that something is broken right now, but it's worrying to
> have the impression that no solution is in the offing at all. I'd love
> to see some sort of Hibernation team created that tries to tackle the
> problem in a systematic way.

I've tried. We can't. The lack of source means we have absolutely no 
idea what these drivers do over suspend/resume, and there's no way to 
figure out what we should be doing in response. The long-term solution 
involves moving modesetting and video initialisation into the kernel, 
but I strongly suspect that that will end up breaking the binary drivers 
for a significant period of time until they adjust. I don't see any way 
we can make this work properly within the next 18 months.
Matthew Garrett | mjg59 at srcf.ucam.org

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