Changes between Initial Version and Version 1 of Ticket #7693, comment 9


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Timestamp:
Sep 28, 2022, 10:25:10 PM (3 years ago)
Author:
Tom Goddard

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  • Ticket #7693, comment 9

    initial v1  
    11The Oculus desktop app under Devices / Quest 2 is now saying "USB 3 connection recommended".  It is plugged into a port that says USB 3.1 on it on the back of my Windows 10 machine.  When I plug it into the other USB 3 ports Windows gives a notifications "The last USB device plugged in was not recognized" and the Oculus desktop app says the quest 2 is not connected.  Only the single USB 3.1 port connects but then the Oculus app says "USB 3 connection recommended".
    22
     3I restarted headset and PC following suggestions at
     4
     5  https://smartglasseshub.com/usb-3-connection-recommended-oculus-link-quest-2/
     6
     7but still get the "USB 3 connection recommended".  That message only appears after clicking "Allow" in the headset on the "Allow PC to Access Headset files" panel.  The next suggestion on the above web page was to try flipping the USBC connection 180 degrees.  My cable is USBC on the headset end, and USBA at the PC.  So only the headset can be flipped.  Flipping the headset connection fixed it -- no more "USB 3 connection recommended".  Unfortunately this cable  has the connector at right angles to the cable and seems intended to have the cable exit from the headset toward the person's body.  But that way gives the "USB 3 connection recommended" warning, apparently indicating it got only USB 2, while the other orientation works.  It is usable in the other orientation.
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     9Possibly all my previous tests with the link cable were not using USB 3.  The warning is shown in the Oculus desktop app under Devices after clicking on the Quest 2 device.
     10
     11Testing without the USB 3 warning it seemed less jittery in some ways.  The flicker of the halfbond color boundaries disappeared.  Also the finest scale jitter disappeared.  But the coarser jitter, half-centimeter jumps, 10 in a row over half a second, are still frequent when moving the head or moving the molecule, happening maybe every 10 seconds.  These coarse jitters are probably more disturbing than the other two jitters that seem to have gone away with the USB 3 connection fix.  I suspect the coarse jitter is simply dropping every other frame at the slow 72 frames / second.