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Can someone with an iMac 5K check if Linux works at 5K?

does amdgpu.dc=0 on the kernel command line change anything when using amdgpu?
 
gymrat2k said:
The text recognition software (I took a photo of the screen) interpreted the @-sign as an extra 0.

I'm still on 3840x2160 as the max resolution in Ubuntu. Tried both variants:

Code: 
linux /casper/vmlinuz --- video=eDP-1:5120x2880@MR-24 quiet splash

and

Code: 
linux /casper/vmlinuz --- video=eDP-1:5120x2880@MR quiet splash
Click to expand...

It might not work, but I actually wrote these code snippets wrong. The correct versions are:

Code: 
video=eDP-1:5120x2880MR@60

or

Code: 
video=eDP-1:5120x2880MR@60-24

If the position of the MR is wrong it is ignored completely.

The above snippets should be inserted into your kernel command line which normally has "quiet splash .... " in it.

sudo nano etc/default/grub
[edit and save file]
then
sudo update grub
then
reboot
 
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