Created attachment 143092 [details] dmesg I use following setup: 1) HP EliteBook 745 G5 with Ryzen 5 PRO 2500U 2) Docking station HP HSTNN-I11X 3) Monitor BenQ GW2260 (HDMI and no DisplayPort) 4) openSUSE Tumbleweed 5) Self compiled kernel 4.20-rc3 from amd-staging-drm-next with patches: drm/amd/display: Include names of all PP clock types x86/MCE/AMD: Fix the thresholding machinery initialization order My problem is that I can't use notebook's HDMI port (visible as DisplayPort-0) after using DisplayPort output of docking station. HDMI detects monitor & gets EDID but xrandr doesn't list any modes. After booting without docking station & connecting monitor using HDMI port: DisplayPort-0 connected (normal left inverted right x axis y axis) 1920x1080 60.00 + 50.00 59.94 1680x1050 59.88 1600x900 60.00 1280x1024 60.02 1440x900 60.00 1280x800 59.91 1280x720 60.00 50.00 59.94 1024x768 60.00 800x600 60.32 720x576 50.00 720x480 60.00 59.94 640x480 60.00 59.94 After connecting docking station & monitor using DP port + HDMI adapter: [drm] DM_MST: starting TM on aconnector: 00000000651bd996 [id: 57] [drm] DM_MST: added connector: 00000000e1b7686d [id: 90] [master: 00000000651bd996] [drm] DM_MST: added connector: 0000000078869ed2 [id: 94] [master: 00000000651bd996] [drm] DM_MST: added connector: 00000000af4e5879 [id: 98] [master: 00000000651bd996] [drm] amdgpu_dm_irq_schedule_work FAILED src 8 [drm] amdgpu_dm_irq_schedule_work FAILED src 8 [drm] amdgpu_dm_irq_schedule_work FAILED src 8 After disconnecting monitor & docking station: [drm] DM_MST: stopping TM on aconnector: 00000000651bd996 [id: 57] [drm] DM_MST: Disabling connector: 00000000e1b7686d [id: 90] [master: 00000000651bd996] [drm] DM_MST: Disabling connector: 0000000078869ed2 [id: 94] [master: 00000000651bd996] [drm] DM_MST: Disabling connector: 00000000af4e5879 [id: 98] [master: 00000000651bd996] After connecting monitor using HDMI port: xrandr: Output DisplayPort-0 is not disconnected but has no modes (...) DisplayPort-0 connected (normal left inverted right x axis y axis) It's a bit weird since HDMI port (DisplayPort-0) seems to detect monitor being connected & can get EDID. Is there some bug with enumerating available models caused by DM_MST / TM?
Created attachment 143093 [details] Detailed logs of all connecting/disconnecting operations
I've noticed that: 1) After connecting monitor to the docking station's DP output following outputs appear: DisplayPort-3, DisplayPort-4 and DisplayPort-5. 2) After disconnecting monitor from docking stating I can see: [drm] DM_MST: stopping TM on aconnector: 00000000651bd996 [id: 57] [drm] DM_MST: Disabling connector: 00000000e1b7686d [id: 90] [master: 00000000651bd996] [drm] DM_MST: Disabling connector: 0000000078869ed2 [id: 94] [master: 00000000651bd996] [drm] DM_MST: Disabling connector: 00000000af4e5879 [id: 98] [master: 00000000651bd996] 3) After disconnecting whole docking station I can still see DisplayPort-3, DisplayPort-4 and DisplayPort-5 in the "xrandr" output. Is that expected? Is that a possible hint for some problem with output management that also causes the original problem?
This problem also occurs when using drm/drm branch drm-next (5.0.0-rc1) with: [PATCH v7 00/20] MST refcounting/atomic helpers cleanup on top of it. The only difference I've noticed is xrandr complaining about MIT-MAGIC-COOKIE-1: > xrandr Invalid MIT-MAGIC-COOKIE-1 keyxrandr: Output DisplayPort-0 is not disconnected but has no modes Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384 eDP connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 174mm 1920x1080 60.02*+ 40.00 1680x1050 60.02 1280x1024 60.02 1440x900 60.02 1280x800 60.02 1280x720 60.02 1024x768 60.02 800x600 60.02 640x480 60.02 DisplayPort-0 connected (normal left inverted right x axis y axis) DisplayPort-1 disconnected (normal left inverted right x axis y axis) DisplayPort-2 disconnected (normal left inverted right x axis y axis) DisplayPort-3 disconnected (normal left inverted right x axis y axis) DisplayPort-4 disconnected (normal left inverted right x axis y axis) DisplayPort-5 disconnected (normal left inverted right x axis y axis)
Please attach the corresponding Xorg log file, preferably captured after reproducing the problem.
Created attachment 143103 [details] Xorg.0.log I'm attaching Xorg.0.log at requested with my actions commented properly
Created attachment 143104 [details] Xorg.0.log using xf86-video-modesetting Michel has suggested trying xf86-video-modesetting. A difference from user perspective is minimal. 1) With both drivers I can use HDMI output port just fine after booting (without a docking station) 2) After that I connect docking station, connect DP, disconnect DP, disconnect docking station 3) Finally I try connecting monitor to the HDMI output again: a) With xorg-xf86-video-amdgpu I get "Output DisplayPort-0 is not disconnected but has no modes" b) With xf86-video-modesetting I get "xrandr: Configure crtc 1 failed"
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