I used XRDP for quite a while. It worked until May the 20s. Then after a few days, possibly with Nix package upgrading, it does not work anymore.
Using the same options, from Windows RDP client connecting to XRDP, after inputting username/password, it was black screen for some time, longer than usual, then told me it cannot connect to Xorg.
After enabled debug log for xrdp and xrdp-sesman, I saw Error connecting to X server [Permission denied]. Digging around, I got following information.
- PS result showed that the program (xrdp-chansrv) between Xorg and XRDP was run as me, and XRDP was run as
xrdpuser. - The sockets opened by xrdp-chansrv were all owned by me.root, with permission 660.
Hence I stopped xrdp.service, and ran the exact command with me or root user, both worked.
Adding myself to xrdp group did not help.
I could not find related info if some config should be changed.
PS info:
root 91543 91543 91543 0.0 0.0 10128 3840 ? Ss 15:00 0:00 /nix/store/ir1k6g953p730hfi6g8cdll3nfc5g20s-xrdp-0.10.3/bin/xrdp-sesman --nodaemon --config /nix/store/xpxhm37d7f3lkg3b7s2mpm8ix57qizs4-xrdp.conf/sesman.ini
root 91587 91543 91543 0.0 0.0 13764 6028 ? S 15:00 0:00 \_ xrdp-sesexec -c /nix/store/xpxhm37d7f3lkg3b7s2mpm8ix57qizs4-xrdp.conf/sesman.ini
magiclo+ 91591 91591 91543 0.0 0.0 109764 25352 ? Sl 15:00 0:00 \_ /nix/store/pl2mapfil2bi7bdsypqyi6xa7b7asmjm-xorg-server-21.1.16/bin/Xorg :11 -auth .Xauthority -modulepath /nix/store/kbhc8rif9r3fi2ycni1plmdvgqxvgk81-xorgxrdp-0.10.4/lib/xorg/modules,/nix/store/pl2mapfil2bi7bdsypqyi6xa7b7asmj
magiclo+ 91597 91591 91543 0.0 0.0 7824 3572 ? S 15:00 0:00 \_ /bin/sh /nix/store/xpxhm37d7f3lkg3b7s2mpm8ix57qizs4-xrdp.conf/startwm.sh
magiclo+ 91600 91591 91543 0.0 0.0 14464 8272 ? S 15:00 0:00 | \_ /run/current-system/sw/bin/xterm
magiclo+ 91601 91601 91601 0.0 0.0 12756 7852 pts/2 Ss+ 15:00 0:00 | \_ zsh
magiclo+ 91598 91591 91543 0.0 0.0 87940 5268 ? Sl 15:00 0:00 \_ /nix/store/ir1k6g953p730hfi6g8cdll3nfc5g20s-xrdp-0.10.3/sbin/xrdp-chansrv
xrdp 91548 91548 91548 0.0 0.0 13148 7052 ? Ss 15:00 0:00 /nix/store/ir1k6g953p730hfi6g8cdll3nfc5g20s-xrdp-0.10.3/bin/xrdp --nodaemon --port 3389 --config /nix/store/xpxhm37d7f3lkg3b7s2mpm8ix57qizs4-xrdp.conf/xrdp.ini
Sockers info:
$ ls -l /run/xrdp/1000
total 0
srw-rw---- 1 magicloud root 0 Jun 7 19:14 xrdp_chansrv_socket_10=
srw-rw---- 1 magicloud root 0 Jun 7 19:14 xrdp_disconnect_display_10=
srw-rw---- 1 magicloud root 0 Jun 7 19:14 xrdp_display_10=
srw-rw---- 1 magicloud root 0 Jun 7 19:14 xrdpapi_10=
Discuss in Xrdp repo: XRDP suddenly cannot connect to Xorg. What should I check? · neutrinolabs/xrdp · Discussion #3539 · GitHub