xioctl(UVCIOC_CTRL_QUERY) Device or resource busy errors with kernel 4.19.5 #2850
Description
| Required Info | |
|---|---|
| Camera Model | D430 |
| Firmware Version | 5.10.13.0 |
| Operating System & Version | Linux (Gentoo) |
| Kernel Version (Linux Only) | 4.19.5 |
| Platform | PC |
| SDK Version | master branch at 79dda7f |
| Language | C++ |
| Segment | N/A |
Issue Description
On Linux kernel 4.19.5 errors are generated when some commands are sent to camera in too quick succession. The error message is: ERROR [139644039424128] (types.h:188) get_xu(...). xioctl(UVCIOC_CTRL_QUERY) failed Last Error: Device or resource busy
Most reliable way to trigger this error is to create an rs2::pipeline, start it with start() and immediately use stream1.get_extrinsics_to(stream2) with appropriate streams. The get_extrinsics_to will throw with above error.
Current workaround is to wait around 3 seconds after starting the pipeline so that the camera can settle and then run get_extrinsics_to without issues.