On 4 October 2015 at 21:36, Andreas Tunek andreas.tunek@gmail.com wrote:
2015-10-04 13:31 GMT+02:00 Andreas Tunek andreas.tunek@gmail.com:
2015-10-04 13:26 GMT+02:00 Andreas Tunek andreas.tunek@gmail.com:
2015-10-04 6:31 GMT+02:00 Dave Airlie airlied@gmail.com:
On 3 October 2015 at 04:03, Andreas Tunek andreas.tunek@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@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
No I never tested anything on an imac 5K.
Can you boot with drm.debug=6 radeon.mst=1 and post the dmesg logfile?
I'm not sure if the 5K mode on these would need to be reverse engineered there is definitely some trickery involved.
Dave.