On 2009.08.25 15:33:57 -0700, Eric Anholt wrote: > > However, the problem remains that KMS gets the output wrong, in ways that > > clearly X does not. Eric - it's clearly not just Mac Mini and my > > experimental machine that have problems, but also a Macbook 2.1. > > > > I wonder why the Intel KMS logic doesn't look at which output was driven > > before it got invoked. Instead, it seems to want to try to detect > > everything from scratch, even though we should be able to assume that if > > you boot from BIOS (or EFI, for that matter), the current state of the > > graphics pipeline is likely meaningful. > > In my experience, the BIOS setup doesn't reflect what outputs should be > used at runtime, and certainly not the correct configuration of the > enabled outputs. For example, if we went to this, the giant monitor > attached to my laptop that I actually look at would go unused. >
yeah, normally VBIOS startup just needs or only can driver one pipe, so we don't have any pre knowledge except detect everything. > > And clearly distros are trying to enable this. Which means that this is > > getting way more important to solve. > > Yes, please open a bug on bugs.freedesktop.org and set severity=critical > -- the people working on modesetting should pick it up and take a look > at it. > we already have some mac relate bugs open, but please report on it so we do have people with hardware to try and response. We have recently got a MacBook, yakui is looking after the modesetting issue on it. > For some of the DDC bugs, David Müller has an interesting-looking patch > to parse the BIOS's tables describing what DDC pin is used for VGA on > 852, though it looks like it should be usable on much more. I was > hoping the modesetting guys would review it and ack, but no response so > far. > We should also have floating patch on that, hope we'll prepare and cleanup the patches for mac soon. -- Open Source Technology Center, Intel ltd. $gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827
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