5K iMac retina multi stream display port

[Andreas Tunek]

2015-10-04 13:26 GMT+02:00 Andreas Tunek <andreas.tunek at gmail.com>:
> 2015-10-04 6:31 GMT+02:00 Dave Airlie <airlied at gmail.com>:
>> On 3 October 2015 at 04:03, Andreas Tunek <andreas.tunek at gmail.com> wrote:
>>> Hi
>>>
>>> I sort of recall that somebody (Dave Airlied) work on this in order to
>>> get the full 5K from a retina iMac. Was that work finished or is that
>>> coming in 4.3 or later? Or was it abandoned? Or maybe I am not
>>> remembering correctly?
>>
>> you can try a 4.2 kernel with radeon.mst=1
>>
>> I've no idea if it will work.
>
> Didn't seem to have any effect. Is this a correct boot env:
> [
> root at iMacLinux tuna]# cat /proc/cmdline
> BOOT_IMAGE=/vmlinuz-4.2.1-300.fc23.x86_64
> root=UUID=e3e65337-b654-495f-b7c1-0212e1fd0797 ro rhgb quiet
> LANG=en_US.UTF-8 radeon.mst=1
>
>>
>> Dave.

Sorry for replying again, but you wrote some stuff in February*, did
you test with an iMac or some other 5K screen then?

http://thread.gmane.org/gmane.comp.video.dri.devel/124345

Best regards
Andreas