Linuxcnc & the Rpasberry Pi (4 & 5)

Hi,
When I try to log in with rdp from windows 11, it accepts user and pass, but after the image displays something pixelated as if there were 100 miniature desktop . Has anyone else experienced this? (rpi 4 4gb ). Everything else works ok so far..

To be perfectly honest your issue is somewhat out the scope of the support found on the forum.
It is quite obvious you installed the remote software on the RPi, as I didn't build the image with any remote connection software other than SSH.
Your best bet would be to try the various Debian forums, the raspberry pi forums usually deal with issues with Raspios.
The RPi images are Debian Bookworm, with the kernel source from the RPi sources and Linuxcnc packages installed.
The images are not expected to be run via any remote desktop, hence the reason no remote desktop software is included, nor is it expected to be used as a general purpose OS.
What is your reason to run remotely ?
And please no double posting. My apologies I got confused by another user that was having the same issue.

"And please no double posting." What do you mean by that?

I use the system with a 7 inch original rpi touch screen display, and I wish to use rdp for easy configuration of the system. For this reason I try to configure rdp server. (the rdp server was all ready in the image, I didn't install it...)
I asked here because I use the linux image from this post. If is not oky please let me know where to move the question.
Tnx.

Are you absolutely sure you are using the Linuxcnc image. Because when I made the RPi4 and RPi5 images I didn't put any remote access software in the image other than SSH.
Please read the paragraph above very carefully.
No RDP nor VNC packages were put in the list of packages to be installed.

If you are using the Linuxcnc 2.9.4 images, and as you claim have any rdp or vnc packages installed it means the images themselves have been compromised. If this is the case I would make a report either on the mailing list or github pages. Links to these can be found at the Linuxcnc homepage.
The copy of the image that I am running on my RPi5 does not have any of the packages pre installed. The images I am using are the ones that I built and submitted to be put on the downloads page.
This is a very serious situation, so I want you think about whether you are using the Linuxcnc images that have been downloaded from the Linuxcnc downloads page and carefully rethink your statement that you did not install these packages yourself.
As I said this is a very serious matter and must be dealt with accordingly.

Sorry, you are right, the original image is clean. my mistake!

I don't know why you insisted on saying that it was so, when I clearly told you I created the images and did not have those software packages installed.


Sometimes I don't know why I even fucking bother.

I was after 12 hours of milling parts in the shop, and another 5 hours of trying to set up linuxcnc, so don't be too angry in your judgment.
I also solved the problem as follows:

sudo nano /etc/X11/etc/X11/xrdp/xorg.conf
search for OPTION "DRMDevice" line
and replace with
Option "DRMDevice" ""
save, reboot and all work fine after!

You commits caused somewhat of an issue. Do you think I sat on my hands and did SFA ?

I don't care about your workflow, it's not my issue. My issue was ensuring the integrity of the images.
I don't care about you trying to setup a remote desktop, that was something you decided to do. That software was outside the scope of the software needed to run a cnc machine. I don't know why people ignore using ssh.

haasme wrote:

Hi,
When I try to log in with rdp from windows 11, it accepts user and pass, but after the image displays something pixelated as if there were 100 miniature desktop . Has anyone else experienced this? (rpi 4 4gb ). Everything else works ok so far..
 

Hi haasme,

I have tried this dozen times or so, most of the times I had the results as yours. There were times when it worked, I don't know why. I have the desktop, and it responded quite well as well. BUT WHEN I ran glxgears, its own windows with the three gears were pixelated as well. I have since given up on this remote desktop connection. I plan to have another desk and another monitor Or perhaps a HDMI switcher (if there is such a thing.)

Best regards,

...behai.