Comment # 22
on bug 109246
from valentinesd@gmail.com
This is happening to me as well. RX570 w/ Acer H236HL Dual head, both inputs HDMI I didn't have this issue with the same monitors and an nvidia card, so it seems specific to the amdgpu driver. The monitors seem to lose signal (which is normal), then perform an auto input cycle which then wakes the monitors back up. The backlight will come on and display the mouse cursor on a black screen. I experience this with both Xorg and Wayland. Unfortunately I can't disable auto input on my monitors, as the previous workaround suggests. Just disabling DDC/CI didn't help. Adding amdgpu.dc=0 to linux cmdline resolves the issue for me, but I'm concerned that may preclude my system from gaining newer features.
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