On 21.10.2016 10:56, Pierre Moreau wrote:
> On 01:15 am - Oct 21 2016, Lukas Wunner wrote:
>> On Thu, Oct 20, 2016 at 10:08:28AM +0200, Lukas Wunner wrote:
>>> On Wed, Oct 19, 2016 at 07:58:06PM +0200, Pierre Moreau wrote:
>>>> For example, my laptop (which also has an NVAC) has been triggering the
>>>> no-signal message on external monitors way before Ben???s patch landed,
>>>> but only for some adapters. I haven???t tried Ben???s patch yet, nor
>>>> yours, but I will certainly do it, and see what effect each of them has.
>>>
>>> The external DP port on your MBP5,3 is switchable between GPUs and
>>> the apple-gmux driver switches it in unison with the panel.  Thus
>>> the NVAC cannot drive external displays when gmux is switched to
>>> the MCP79.  (You probably were aware of this, just wanted to mention
>>       ^^^^^
>> I meant G96, sorry I mixed it up.
>>
>> Lukas
> 
> Yes, that bit had stayed in my memory, that switching between the two GPUs
> would not only switch them for the laptop screen, but for the external ones as
> well. IIRC, I am getting the no signal in both cases, but I need to retest.
> 
> Pierre

Any news related on your side?



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