still can reproduce this issue with mainline kernel 5.3-rc5.
** Attachment added: "dmesg.v5.3-rc5.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1841139/+attachment/5284621/+files/dmesg.v5.3-rc5.log
** Changed in: oem-priority
Status: Confirmed => Triaged
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https://bugs.launchpad.net/bugs/1841139
Title:
monitor hotplug not working as external d-sub or display port connect
amd gpu and internal lcd connect to intel gpu.
Status in OEM Priority Project:
Triaged
Status in linux package in Ubuntu:
Confirmed
Bug description:
Platform: dell 5420 / 5424 with AMD GPU.
D-SUB or display port hot plug won't work in bionic with bionic kernel oem
4.15 -1048 and oem-osp1 5.0 -1016. It can be work around with amdgpu.runpm=0
kernel parameter, with the price of higher power consumption.
As install bios 89.7.48 + Kernel: 4.15.0-1043-oem + amdgpu:
amdgpu-pro-19.10-793418
The hotplug works. However, no DP audio (unless boot with DP plugged).
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