5K iMac retina multi stream display port

[Andreas Tunek]

2015-10-04 13:31 GMT+02:00 Andreas Tunek <andreas.tunek at gmail.com>:
> 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

Spamming again, this is my xrandr output:

xrandr
Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384
eDP connected primary 3840x2160+0+0 (normal left inverted right x axis
y axis) 597mm x 336mm
   3840x2160     60.00*+
   3200x1800     59.98
   2560x1440     59.95
   1920x1200     59.88
   1920x1080     59.96
   1600x1200     59.87
   1680x1050     59.95
   1400x1050     59.98
   1280x1024     59.89
   1440x900      59.89
   1280x960      59.94
   1280x854      59.89
   1280x800      59.81
   1280x720      59.86
   1152x768      59.78
   1024x768      59.92
   800x600       59.86
   848x480       59.66
   720x480       59.71
   640x480       59.38
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)