Gigabyte FI32u and Sapphire Nitro+ Vega64 does not work when connected via Displayport
Brief summary of the problem:
Gigabyte FI32U Displayport connected Powers Off after seeing BIOS, Grub, Initrd & Systemd stuff the Display turns off and does not "Power On" anymore. When using a Vega64 the Monitor shows Displayport - NO-SIGNAL and goes to Standby.
Hardware description:
- CPU: R7 2700X
- GPU: Sapphire Nitro+ Vega64 and a borrowed Sapphire Nitro+ RX5700XT
- System Memory: 32 GB
- Display(s): Gigabyte FI32U & Samsung LU32J592UQRXEN
- Type of Diplay Connection: DP does not work & HDMI does work with only 60hz
System information:
- Distro name and Version: archlinux (hdd installed) & Mint 20.2 (Live USB Stick) & Ubuntu 21.04 (Live USB Stick)
- Kernel version: 5.13.7
- AMD package version: local/xf86-video-amdgpu 21.0.0-1
How to reproduce the issue:
Connect the Gigabyte FI32U via Displayport.
Connected via HDMI the Display works in 4k@60hz (instead of 120hz).
When two Displays are connected one Samsung via HDMI, and the FI32U via Displayport the HDMI connected Monitor also stays off. Booting up with Samsung Monitor connected (alone) via HDMI, and the FI32U not connected, and then connecting the FI32U after Xorg started up leads to xrandr recognizing the FI32U but i am not able to "Power On" the Monitor.
Monitor works on Displayport with Windows 10 21H1 and latest AMD Driver for the Vega64 with 4k@120hz.
Changing the Sapphire Nitro+ Vega64 to a Sapphire Nitro+ RX5700XT, the FI32U Monitor works on linux connected via Displayport in his native resolution 3840x2160 with 144hz.
Attached files:
FI32U via DP connected, no other display, need to SSH-Login into the PC
Samsung via HDMI, FI32U via DP connected
xrandr_edid-decode_gbt dmesg_gbt xorg.log
FI32U via DP connected, with the RX 5700 XT