builtin display using amdgpu gives a black screen on macbook pro 13, 3

D Marinus dmarinus at mrns.nl
Thu May 7 19:19:35 UTC 2020


Since I've updated the linux kernel to 5.6 my builtin display of my
Apple Macbook Pro 13,3 is blank. The following bug reports have been


xrandr gives the following message
xrandr: Output eDP is not disconnected but has no modes

the /sys/kernel/debug/vgaswitcheroo/switch entry is missing

lspci gives:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] Baffin [Radeon RX 460/560D / Pro
450/455/460/555/555X/560/560X] (rev ef)

Any thoughts on the cause or fix? What would be helpful information?

Thanks a lot!

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