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Hi all,
I have a 6800XT and a GTX 980 installed in my system with two monitors plugged in to the 6800XT via HDMI and DP. When I got the 6800XT a little over two weeks ago it worked fine through reboots until I shut the system down one night and the DP ports all stopped functioning when I started it again in the morning. HDMI worked fine. I installed EndeavourOS on a separate drive since I also couldn't get in to GUI or tty on my Arch install (just a blinking cursor on a blank screen). Same issue, but I could at least get in to GUI where I saw that the monitor wasn't picking up any output, but the OS was seeing the DP port as a low-res 4:3 60Hz output when my monitor is 144Hz 1080p. After much hair-pulling I pulled the AMD card out intending to RMA it, but after moving house I decided to give it one last try and plugged it back in. To my surprise it functioned normally, playing games quite well via the DP port until again I shut the system down and I'm faced with the same problem. I've scoured the forums and finally broke down and installed Windows, which did not fix the problem.
This thread, while not describing the same problem, seems to suggest that DP and HDMI dual-monitor setups act a little wonky after kernel 5.16-ish. My second monitor only has VGA, DVI, and HDMI inputs so it would be unfortunate is this was the root cause.
I would like to have the option of shutting the system down without fear of having to open up my computer case and pull the card out every time I want to 'hard reset' the 6800XT, does anyone have ideas as to the cause?
Outputs:
xrandr -q:
Screen 0: minimum 320 x 200, current 1720 x 1920, maximum 16384 x 16384
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 connected 640x480+1080+0 (normal left inverted right x axis y axis) 0mm x 0mm
640x480 59.94*
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected primary 1080x1920+0+0 right (normal left inverted right x axis y axis) 476mm x 268mm
1920x1080 60.00*+ 50.00 59.94
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1280x960 60.00
1280x800 59.91
1152x864 75.00
1280x720 60.00 50.00 59.94
1440x576 50.00
1024x768 75.03 70.07 60.00
1440x480 60.00 59.94
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 66.67 60.00 59.94
720x400 70.08
DVI-I-1-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1-1 connected (normal left inverted right x axis y axis)
1920x1080 60.00 + 144.00 119.98 99.93 84.90
1680x1050 59.95
1440x900 59.89
1280x1024 75.02 60.02
1280x960 60.00
1280x800 59.81
1280x720 60.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
640x480 75.00 59.94 lspci -k | grep -A 3 -E "(VGA|3D)":
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 21 [Radeon RX 6800/6800 XT / 6900 XT] (rev c1)
Subsystem: XFX Limited XFX Speedster MERC 319 AMD Radeon RX 6800 XT Black
Kernel driver in use: amdgpu
Kernel modules: amdgpu
--
04:00.0 VGA compatible controller: NVIDIA Corporation GM204 [GeForce GTX 980] (rev a1)
Subsystem: eVga.com. Corp. Device 2983
Kernel driver in use: nvidia
Kernel modules: nouveau, nvidia_drm, nvidialet me know if more detail is needed.
**EDIT**
As an update, I 'reset' the AMD card by removing it, putting the 980 in its place, booting, removing the 980 from the system and running the system as a single-GPU system with just the AMD card. I'll power it off overnight and see if the normalcy holds up, as that was when it crapped out on me last time.
Last edited by HoltFrak (2022-08-17 21:14:24)
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