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Unable to RDP into Kubuntu KRDP from Windows 11

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    [Post-Install] Unable to RDP into Kubuntu KRDP from Windows 11

    I was on Kubuntu 26.04 and thinking it was the problem, I forced an upgrade to 26.10, so I could get KDE 6.7. As there have been fixes and improvements for KRDP.
    Computer one is on Windows 11 Pro. This will be called C1 in this post.
    Computer two is on Kubuntu 26.10 This will be called C2 in this post.

    C2 had Kubuntu installed, and the RDP from C1 to C2 worked, then for some reason, I formatted and reinstalled Kubuntu on C2, in an attempt to fix a different issue.
    Now I cannot get RDP to work from C1 to C2. I can remote in Via SSH so I know the IP address works. The network connection is good.
    No settings for RDP on C1 have been changed. Those have remained the same, minus what ever windows updates have come out in the past several months.

    When RDP was working, I had a dedicated Nvidia 2060 installed, and have since removed it, and gone to on board graphics.
    I just want this machine to be a media station, and VM server. But want a GUI installed. I do not want to walk over to it, every time I want to make a change to something that requires a GUI.
    Does KRDP need a graphics card installed? Everything is enabled for KRDP, all the proper settings are in place.
    RDP tries to connect, then just asks for the password again. I use bitvise which is based on Putty, and windows RDP.

    The way bitvise works is you connect via SSH. Once connected, it has a RDP connection it can do over SSH. Kind of neat. I use that instead of Windows RDP, as Microshaft has made changes to Windows RDP that just do not work for the average user. Please let me know what logs and how to get them are needed.

    #2
    So I formatted and Reinstalled and went with Kubuntu 26.04 LTS minimal installation. Still does not work.

    Comment


      #3
      I will be booting into Windows later, as I can't recall issues using RDP to connect to my 26.04 box,. but not sure if I have done so from Windows in a long while. I can see what works or doesn't for me. I have had no issues from various Linux installs or my Android phone.

      Is C2 on your local network? If so, is using bitvise necessary? Have you tried without using SSH? Having said that, I have used the option for this in KRDC from Linux systems (Another Kubuntu box, KDE neon, and KDE Linux) to my Kubuntu 26.04 box when connecting from outside and inside my home network.
      Last edited by claydoh; Today, 03:11 AM.
      Self-built: Asus PRIME B550M-K/Ryzen 5600GT/32Gb/Intel ARC B580 12Gb/KDE neon
      HP Elitedesk 800 G3 Mini: i5-7500T(35w)/32Gb/Kubuntu LTS
      HP Chromebook 14: i5-1135G7/8Gb/512Gb SSD/KDE Linux​

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        #4
        I had big troubles logging in from Windows.
        However, I was able to do so after some digging, using Thincast, and turning off h264 encoding.


        Click image for larger version  Name:	Screenshot 2026-10-16 030519.png Views:	0 Size:	227.7 KB ID:	694749​
        I could not get it working using the native Windows client, nor MobaXterm, these threw login errors.

        I am sure it is the h264 part here, in combo with freerdp3 in *buntu for some on Linux as well.

        Another option that might be helpful is to try krfb, and try logging in with a vnc viewer.

        Click image for larger version  Name:	2.png Views:	0 Size:	246.6 KB ID:	694750​

        Note this is the exact same Wayland session, and connected using both RDP (thincast) and VNC (MobaXterm) at the same time lol.

        I was going to go and connect from Kubuntu to Widows at the same time (using one of the remote connections to Kubuntu), but that would have been a bit weird. But I have done this before
        Last edited by claydoh; Today, 10:14 AM.
        Self-built: Asus PRIME B550M-K/Ryzen 5600GT/32Gb/Intel ARC B580 12Gb/KDE neon
        HP Elitedesk 800 G3 Mini: i5-7500T(35w)/32Gb/Kubuntu LTS
        HP Chromebook 14: i5-1135G7/8Gb/512Gb SSD/KDE Linux​

        Comment


          #5
          Everything is local to my network.
          I will try turning off h.264 and see if that works.

          Comment


            #6
            How do you turn off or remove h.264? I had some intel drivers installed so I installed these: sudo apt install intel-media-va-driver-non-free and it removed some other intel ones.
            Still did not work.

            Comment


              #7
              I installed Kubuntu Studio. That is the one That I want stuff to work on. And still no go. KRDP hates me.

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