Messages in this thread | | | Subject | Re: [PATCH] apple-gmux: Restore switch registers on suspend/resume | From | David Woodhouse <> | Date | Wed, 01 Aug 2012 20:41:42 +0100 |
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On Wed, 2012-08-01 at 10:59 -0500, Seth Forshee wrote: > I don't think the mini-DP port works at all with the integrated > graphics, at least not on a Macbook Pro 8,2. I played around with it > yesterday under OS X. When using the DGPU with an external monitor it > works fine, but any attempts to switch to the IGPU were rejected by the > drivers. If I forced it to the IGPU prior to connecting the external > monitor the screen just remained blank when I plugged it in, until I > switched back to the DGPU. It's odd though that the DDC can be switched > over to the IGPU.
I get a blank screen when I use the VGA adapter, and with the dual-link DVI adapter I get a barely responsive machine continually printing [ 1076.439623] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting as described at https://bugzilla.redhat.com/show_bug.cgi?id=843779#c8 And a blank screen.
I thought someone had said they'd got it working with a native DP monitor, rather than the converters.
> Iirc you've got the 8,3, and I'd expect it to be identical to the 8,2 in > this respect. Also, the only reason my LVDS didn't work was because I > wasn't telling i915 to disable SSC. I've got a patch to add a quirk for > this that I'll send soon, since there still doesn't seem to be any way > to get the vbios for the Intel graphics.
I think your patch won't cover the 8,3.
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Apple Computer Inc. Device [106b:00de]
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