Realsense 415 not detected when restarted

[AKelu]

Every time I restart my computer with the realsense connected, it no longer detects that the realsense is connected, when it did before the restart. When I check settings, it says that there is a driver error, so I updated the driver but still got this error. Anyone have any ideas how to fix this issue?

[MartyG]

The link below has a D415 case with similar symptoms to yours (camera okay on first boot but not on restart).

​https://github.com/IntelRealSense/librealsense/issues/1283

[AKelu]

Thanks for sharing this thread! I unfortunately still have an issue. When I went into Intel Visual BIOS 2.2.20, Advanced>Devices>USB had no option to change the xHCI mode (it only had portable device charging mode and usb legacy). Also, I am having this issue with firmware version 5.9.2.0 on the 415.

[MartyG]

Does the camera start working if you unplug it from the USB port after the restart and then plug it back in, please?​

[AKelu]

Yes. That is, after the restart, if I unplug and replug the camera into the USB port it starts working again.

[MartyG · Accepted solution]

Here are some further suggestions from an Intel support team member about the fail-after-restart problem. In this case too the camera is not detected after restart but reset successfully with a USB unplug-replug.

https://github.com/IntelRealSense/librealsense/issues/1615#issuecomment-435459519