XRDP suddenly cannot connect to Xorg. What should I check? #3539
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I am on NixOS 25.5 with everything frequently upgraded. My XRDP setup worked quite well until the end of last month. I did not use it for a few days, today, when I connected, I got "Error connecting to Xorg". The "Connection Log" showed in RDP window after login is:
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Answered by
matt335672
Jun 9, 2025
Replies: 2 comments 7 replies
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It looks like sesman has been restarted. As a result, it doesn't know about the session on display 10. This is bug #800 which is now fixed in the devel stream, but has not yet been delivered to a build. Is there important data in the session you are trying to recover? |
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7 replies
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Hi, noticed that I did not set the logging properly. I just fixed that. And now I see a log seems to be the key. |
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Following is the |
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I wonder if it was a problem with my distro (NixOS). The sockets created by xrdp-chansrv are owned by magicloud.root, with mod 660. I guess xrdp.service running in xrdp user cannot access them. I tried running xrdp command in magicloud or root user, the whole thing worked. |
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It's not clear what version of xrdp you're using. Version v0.10.2 provides a facility for running xrdp as a non-root user. The release note is here. You need to set |
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Answer selected by
Magicloud
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Thank you so much. It seems to be the root cause. I did not see a relative change in distro package. It might be missed there. |
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Full logs here. sesman: xrdp: |
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It's not clear what version of xrdp you're using.
Version v0.10.2 provides a facility for running xrdp as a non-root user. The release note is here. You need to set
SessionSockdirGroupin sesman.ini to the group that xrdp is running under so xrdp can access the sockets.