[Bug 104054] [SKL][DP] HP Lap Dock external display with DisplayPort over USB Type-C input not properly detected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104054

--- Comment #20 from Elizabeth <elizabethx.de.la.torre.mena at intel.com> ---
(In reply to Jérôme de Bretagne from comment #19)
> And I forgot to mention it, as there may be a confusion: this is the
> external screen that is rebooting, not my laptop, so the "PM:" entry in the
> logs would be unrelated. The external display rebooting will appear I guess
> as if it has been unplugged then plugged back again.
Thanks for the clarification.

Guess could be this then:

[   77.263201] usb 3-1: USB disconnect, device number 2
[   77.263205] usb 3-1.3: USB disconnect, device number 3
[   77.263289] xhci_hcd 0000:37:00.0: WARN Event TRB for slot 3 ep 2 with no
TDs queued?
[   77.263314] xhci_hcd 0000:37:00.0: WARN Set TR Deq Ptr cmd failed due to
incorrect slot or ep state.
[   77.346649] [drm:drm_mode_object_put [drm]] OBJ ID: 71 (3)
[   77.346679] [drm:drm_ioctl [drm]] pid=688, dev=0xe200, auth=1,
DRM_IOCTL_MODE_GETCONNECTOR
[   77.378797] [drm:drm_mode_object_put [drm]] OBJ ID: 66 (4)
[   77.378832] [drm:drm_ioctl [drm]] pid=926, dev=0xe200, auth=1,
DRM_IOCTL_MODE_GETCONNECTOR
[   77.378856] [drm:drm_mode_object_put [drm]] OBJ ID: 66 (4)
[   77.378883] [drm:drm_ioctl [drm]] pid=926, dev=0xe200, auth=1,
DRM_IOCTL_MODE_GETCONNECTOR
[   77.378983] [drm:drm_sysfs_hotplug_event [drm]] generating hotplug event
[   77.408759] usb 3-1.4: USB disconnect, device number 4
[   77.455915] usb 4-1: USB disconnect, device number 2
[   77.526588] xhci_hcd 0000:37:00.0: xHCI host controller not responding,
assume dead
[   77.526593] xhci_hcd 0000:37:00.0: HC died; cleaning up
[   77.531755] [drm:drm_mode_object_put [drm]] OBJ ID: 71 (4)
[   77.531786] [drm:drm_ioctl [drm]] pid=926, dev=0xe200, auth=1,
DRM_IOCTL_MODE_GETCONNECTOR
[   77.531799] [drm:drm_mode_object_put [drm]] OBJ ID: 71 (3)
[   77.531817] [drm:drm_ioctl [drm]] pid=688, dev=0xe200, auth=1,
DRM_IOCTL_MODE_GETCONNECTOR
[   77.550150] xhci_hcd 0000:37:00.0: remove, state 4
[   77.550158] usb usb4: USB disconnect, device number 1
[   77.550403] xhci_hcd 0000:37:00.0: USB bus 4 deregistered
[   77.550411] xhci_hcd 0000:37:00.0: remove, state 1
[   77.550416] usb usb3: USB disconnect, device number 1
[   77.550757] xhci_hcd 0000:37:00.0: Host halt failed, -19
[   77.550760] xhci_hcd 0000:37:00.0: Host not accessible, reset failed.
[   77.550868] xhci_hcd 0000:37:00.0: USB bus 3 deregistered
[   77.551303] pcieport 0000:02:00.0: Refused to change power state, currently
in D3
[   77.553036] pci_bus 0000:03: busn_res: [bus 03] is released
[   77.553127] pci_bus 0000:04: busn_res: [bus 04-36] is released
[   77.555785] pci_bus 0000:37: busn_res: [bus 37] is released
[   77.556060] pci_bus 0000:38: busn_res: [bus 38-6b] is released
[   77.556133] pci_bus 0000:02: busn_res: [bus 02-6b] is released

And at the end a bunch of missed vblanks:

[drm:drm_calc_vbltimestamp_from_scanoutpos [drm]] crtc 1 : v p(0,280)@
104.139859 -> 104.137759 [e 0 us, 0 rep]
[  104.139613] [drm:drm_vblank_restore [drm]] missed 10 vblanks in 166675243
ns, frame duration=16667604 ns, hw_diff=10
[  104.139629] [drm:drm_vblank_enable [drm]] enabling vblank on crtc 1, ret: 0

Let's wait for someone to take a look at this with the new logs.

Thanks for your patience.

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