rk3328-cc board with 18.04 install fail

[dongxuanlb]

Required Info
Camera Model	D435
Firmware Version	latest
Operating System & Version	Ubuntu 18.04(arch)
Kernel Version (Linux Only)	4.4.114
Platform	rk3328
SDK Version	with source }
Language
Segment	others }

Issue Description

I'm trying to install sdk from source according this.

My platform is rk3288 and with the latest img:

1. ROC-RK3328-CC-ubuntu18.04-LXDE_20180605
2. Linux firefly 4.4.114 Distorted pointcloud from SR300 #46 SMP Tue Jun 5 17:30:08 HKT 2018 aarch64 aarch64 aarch64 GNU/Linux

And with the guide, I run the "script/patch-arch.sh", and and patching the file went wrong(realsense-camera-formats.patch).

I fixed it by :
`@@ -624,6 +624,18 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_Y8I v4l2_fourcc('Y', '8', 'I', ' ') /* Greyscale 8-bit L/R interleaved /
#define V4L2_PIX_FMT_Y12I v4l2_fourcc('Y', '1', '2', 'I') / Greyscale 12-bit L/R interleaved /
#define V4L2_PIX_FMT_Z16 v4l2_fourcc('Z', '1', '6', ' ') / Depth data 16-bit /
+#define V4L2_PIX_FMT_Y8 v4l2_fourcc('Y', '8', ' ', ' ') / Greyscale 8-bit /
+#define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ') / Greyscale 10-bit /
+#define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') / Greyscale 12-bit /
+#define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') / Greyscale 16-bit /
+#define V4L2_PIX_FMT_RAW8 v4l2_fourcc('R', 'A', 'W', '8') / Raw data 8-bit /
+#define V4L2_PIX_FMT_RW16 v4l2_fourcc('R', 'W', '1', '6') / Raw data 16-bit /
+#define V4L2_PIX_FMT_INVZ v4l2_fourcc('I', 'N', 'V', 'Z') / 16 Depth /
+#define V4L2_PIX_FMT_INZI v4l2_fourcc('I', 'N', 'Z', 'I') / 24 Depth/IR 16:8 /
+#define V4L2_PIX_FMT_INVR v4l2_fourcc('I', 'N', 'V', 'R') / 16 Depth /
+#define V4L2_PIX_FMT_INRI v4l2_fourcc('I', 'N', 'R', 'I') / 24 Depth/IR 16:8 /
+#define V4L2_PIX_FMT_INVI v4l2_fourcc('I', 'N', 'V', 'I') / 8 IR /
+#define V4L2_PIX_FMT_RELI v4l2_fourcc('R', 'E', 'L', 'I') / 8 IR alternating on off illumination */

/* SDR formats - used only for Software Defined Radio devices /
#define V4L2_SDR_FMT_CU8 v4l2_fourcc('C', 'U', '0', '8') / IQ u8 */`

but the second problem is:

make: Entering directory '/home/firefly/workspace/librealsense/scripts/kernel/linux-4.4.114' Building modules, stage 2. MODPOST 0 modules make: Leaving directory '/home/firefly/workspace/librealsense/scripts/kernel/linux-4.4.114' cp: cannot stat '/home/firefly/workspace/librealsense/scripts/kernel/linux-4.4.114/drivers/media/usb/uvc/uvcvideo.ko': No such file or directory

And I did'nt found the "$KBASE/drivers/media/usb/uvc/uvcvideo.ko" file.

Any one can help this ?

[dorodnic]

Hi @dongxuanlb
From my experience, RK Linux images tend to be monolithic (without Kernel modules) and I personally struggled to rebuild the entire kernel from source.
A more reasonable approach is to run CMake with flag -DFORCE_LIBUVC=true. Then everything should work.

[dongxuanlb]

Hi @dorodnic

I think maybe the problem is modpost does not build anything?

firefly@firefly:~/workspace/librealsense/scripts/kernel/linux-4.4.114$ sudo make M=drivers/media/usb/uvc/ modules Building modules, stage 2. MODPOST 0 modules

so there is no uvcvideo.ko in the folder?

[dorodnic]

I'm not 100% sure, but the libuvc work-around should definitely work. @ev-mp will be back within a week and perhaps will be able to offer a better solution (I'm not an expert in kernel building :) )

[RealSense-Customer-Engineering]

[Realsense Customer Engineering Team Comment]
Closing this one for now...
Please let us know if there is any further issue after enabling the libuvc workaround on your side.
Thank you.