Arch Linux

ederc

Member

Registered: 2015-05-07

Posts: 5

Macbook Pro Retina Early 2015 13" - Hotplug and external display

I have a new mbp 13" 2015 with arch on it. Besides the missing trackpad drivers and some minor wifi problems everything works as expected. Still I have 2 more problems that have been fixed for the 2014 mbp, so I am not sure what really is happening:

1. Hotplugging Thunderbolt is not working. When I remove my Thunerbolt-to-Ethernet adapter and put it back in, it is not recognized any longer. I have to reboot in order to get it to work again.

2. I am not able to use external displays. I have MiniDisplayPort-to-DVI and MiniDisplayPort-to-VGA adapters, both are working when using MacOSX, but the output of "xrandr -q" only gives me

Screen 0: minimum 8 x 8, current 2560 x 1600, maximum 32767 x 32767
eDP1 connected 2560x1600+0+0 (normal left inverted right x axis y axis) 286mm x 179mm
   2560x1600     59.97*+
   2048x1536     60.00  
   1920x1440     60.00  
   1856x1392     60.01  
   1792x1344     60.01  
   1600x1200     60.00  
   1400x1050     59.98  
   1280x1024     60.02  
   1280x960      60.00  
   1024x768      60.00  
   800x600       60.32    56.25  
   640x480       59.94  
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

So I do not get any modes available for DP1 or DP2. It does not matter which port on the laptop I try, or if the display is connected before booting or not.

Possibly some of you might have encountered the same problems or know how to fix them.