realsense-viewer problems for d455

[Ctiger96]

Required Info
Camera Model	D400(d455)
Firmware Version	05.12.09.00
Operating System & Version	Linux(Ubuntu 18.04)
Kernel Version (Linux Only)	5.4.0-58-generic
Platform	PC
SDK Version	2.40.0
Language	C++
Segment	Robot

Issue Description

I installed SDK using this method: https://github.com/IntelRealSense/librealsense/blob/master/doc/distribution_linux.md When I run realsense-viewer in the terminal, three Warnings and one Error appear:

15/12 13:32:24,547 WARNING [140438733784832] (backend-v4l2.cpp:1271) Pixel format 36315752-1a66-a242-9065-d01814a likely requires patch for fourcc code RW16!
15/12 13:32:24,582 WARNING [140438733784832] (sensor.cpp:1076) RGB Camera: skipping Exposure control. descriptor: [min/max/step/default]= [0/0/0/0]
15/12 13:32:24,584 ERROR [140438733784832] (types.h:313) xioctl(VIDIOC_G_CTRL) failed Last Error: Invalid argument
15/12 13:32:24,584 WARNING [140438733784832] (sensor.cpp:1100) Failed to add Enable Auto Exposure control for RGB Camera

Would you plz tell me what to do with it? Thx!

One the other hand, PointCloud is jittering seriously, and is it normal? How can I modify it? Thx!

[Jesburg]

I have the same problem, seeking for the way to deal with it!

[Ctiger96]

@MartyG-RealSense Hello sir, would you please give me some advice? Thank you very much.

[RealSenseSupport]

The warning messages for RGB camera doesn't appear to show up on my system with the same Ubuntu and kernel version. (See below )

:~$ uname -r
5.4.0-58-generic
:~$ dpkg -l | grep "realsense"
ii  librealsense2:amd64                              2.40.0-0~realsense0.3814                            amd64        Intel(R) RealSense(tm) Cross Platform API - runtime
ii  librealsense2-dkms                               1.3.14-0ubuntu1                                     all          Modified kernel modules for librealsense2
ii  librealsense2-gl:amd64                           2.40.0-0~realsense0.3814                            amd64        Intel(R) RealSense(tm) - GLSL-enabled extensions
ii  librealsense2-net:amd64                          2.40.0-0~realsense0.3814                            amd64        Intel(R) RealSense(tm) - Network Bridge extension
ii  librealsense2-udev-rules:amd64                   2.40.0-0~realsense0.3814                            amd64        Intel(R) RealSense(tm) Camera Capture API - udev rules
ii  librealsense2-utils:amd64                        2.40.0-0~realsense0.3814                            amd64        Intel(R) RealSense(tm) Camera Capture API - utils and demos

Please try to recalibrate the camera as I suspect the jittering might be caused by the camera calibration is slightly off. https://github.com/IntelRealSense/librealsense/issues/7615#issuecomment-712767503

[Ctiger96]

@RealSenseSupport The information you showed me is totally the same as mine. And now I uninstall librealsense using dpkg -l | grep "realsense" | cut -d " " -f 3 | xargs sudo dpkg --purge and want to reinstall it using sudo apt-get install librealsense2-dkms, then an ERROR appers:

Loading new librealsense2-dkms-1.3.14 DKMS files...
Building for 5.4.0-58-generic
Building initial module for 5.4.0-58-generic
Error!  The dkms.conf for this module includes a BUILD_EXCLUSIVE directive which
does not match this kernel/arch.  This indicates that it should not be built.
Skipped.

Loading the modified modules into kernel... complete
Current status:
librealsense2-dkms, 1.3.14: added
nvidia, 440.100, 4.15.0-128-generic, x86_64: installed
nvidia, 440.100, 5.4.0-53-generic, x86_64: installed
nvidia, 440.100, 5.4.0-58-generic, x86_64: installed
mod: videodev           
mod: uvcvideo            version: 1.1.1
mod: hid_sensor_gyro_3d     
mod: hid_sensor_accel_3d    

I dont know how to deal with the dkms.conf error, and I think this is the reason why I got the WARNING when run the command realsense-viewer(at the first installing time, I didn't watch the information on the terminal carefully). Would you plz give me some advice? Thx!

By the way, I find this issue https://github.com/IntelRealSense/realsense-ros/issues/1521, which is familiar with mine. And I run cd /usr/src/librealsense2-dkms-1.3.14 and grep -r BUILD_EXCLUSIVE ., then it shows

./dkms.conf:BUILD_EXCLUSIVE_KERNEL="^(4.1([5|8]).0-*|5.[0|3])"

Except for downgrading to 5.3 and installing from the source(I dont know whether it works), what can I do? Thx!

[Ctiger96]

@RealSenseSupport On the other hand, I tried to re-calibrate the camera, but I got the worse result than I showed. So how can I recover the default parameters of the camera?

[RealSenseSupport]

Yes, the patch can also be manually built using the steps [1-4] in "Prepare Linux Backend and the Dev. Environment": https://github.com/IntelRealSense/librealsense/blob/master/doc/installation.md

Please use CustomRW tool with -g option to reset the calibration table to it's factory setting.

[RealSenseSupport]

Just wondering if any further help is needed for this issue. Thank you.