Getting error during login attempt: "error loading libvnc.so specified in xrdp.ini"

[parhom]

After updating to development branch of Ubuntu Jammy the xrdp package was updated from version 0.9.15 to 0.9.17 and I started getting the following error in xrdp log:

[ERROR] xrdp_wm_log_msg: error loading libvnc.so specified in xrdp.ini, please add a valid entry like lib=libxrdp-vnc.so or similar

Looks like it is connected with this issue: https://github.com/neutrinolabs/xrdp/issues/1986

which is fixed in xrdp 0.9.18: https://github.com/neutrinolabs/xrdp/pull/1989 https://github.com/neutrinolabs/xrdp/releases/tag/v0.9.18

[parhom (andriy-parhomenko)]

Actually, Debian has an open merge request fixing the issue: https://salsa.debian.org/debian-remote-team/xrdp/-/merge_requests/5

[parhom (andriy-parhomenko)]

I can confirm that applying the patch fixes the issue.

[academyadmin (academyadmin)]

The problem is still persisting at the current 22.04 LTS Release.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Fmstrat (fmstrat)]

I can confirm the patch linked above is functioning for me.

[Fmstrat (fmstrat)]

I should specify, it worked for me in 22.04 LTS with a rebuild with patch.

[Tired Sysadmin (wearyofallthiscrap)]

fmstrat, do you have any guidance on how we'd go about building a new package on 22.04 LTS? The upstream 0.9.19 release contains a fix for not only this bug, but also a recent privilege escalation CVE.

I've the 'apt source xrdp' results for 0.9.17, and have been glancing through its patched sources (containing the Ubuntu adjustments and good old 'debian/rules'). And I've the upstream xrdp-0.9.19.tar.gz release. But I'm fuzzy on how to glom these together to get a 0.9.19 source tree on which I can run debian/rules to get an installable package.

I suppose I can just run the upstream's configure/make/install steps and at least get a binary to copy into place, but I don't know what Ubuntu-specific changes I'd be losing by not using a package build.

[academyadmin (academyadmin)]

If that really is a defect/bug it would probably make sense to roll this fix out to all ubuntu installations, so that a manual patch is not required.
Is there any plan on the roadmap?

[Siavash (siavash-arya89)]

I've Installed 0.9.20 on my Mac and I try to connect to vnc-any from Remmina on my Ubuntu. When I connect I this error. Any ideas? Should I try a different version?

[Siavash (siavash-arya89)]

I just tried installing 0.9.11 on my Mac which was used in the tutorial I followed. I got the same problem. Is this problem caused on the server or on the client?

[Marco Davids (mdavids)]

Quick fix:
Fetch the xrdp package from Kinetic and install it. Worked for me.
https://packages.ubuntu.com/kinetic/xrdp

[academyadmin (academyadmin)]

Will this feature be fixed in Ubuntu in general or do we really need to use the "work arround" to solve it on long term pespective?

[academyadmin (academyadmin)]

any update?

[academyadmin (academyadmin)]

It is still not working with the upgrade. The shipped package with ubuntu 22.04 LTS does not work still.
Is there a roadmap until which that will work, that we can upgrade our infrastructure?

[Marco Heyde (marcoheyde)]

I've successfully built a newer version xrdp-0.9.19 using Linux Mint 21 with Ubuntu 22.04 base using the following approach. The resulting DEB package is attached. XRDP with libvnc works.

---

Linux Mint 21 / Ubuntu 22.04

# prepare build environment for repo version
sudo apt source xrdp
sudo apt-get build-dep xrdp

# install dch
sudo apt install devscripts

# git repo XRDP-Ubuntu
https://code.launchpad.net/ubuntu/+source/xrdp
- clone repo and checkout tag 0.9.19....
- build

# set new version, edit changelog
<email address hidden> dch -i

# build DEB
debuild -us -uc -b -- binary

---

# clean build environment
debuild -- clean

---

For reference additional xrdp sources:

# git repo XRDP upstream
https://github.com/neutrinolabs/xrdp

# git repo XRDP Debian
https://salsa.debian.org/debian-remote-team/xrdp

[academyadmin (academyadmin)]

very good.
I can also do it manually, but it would be nice if it would be fixed in the default LTS Repo to upgrade without issues.

[academyadmin (academyadmin)]

Is there an fix in the pipeline before EOL of 20.04?

[academyadmin (academyadmin)]

guys is there already a fix avialable in the official repo?

[Ankesh Anand (ankeshanand)]

I am using Ubuntu 22.04 and this bug still affects me. Ubuntu 22.04 still comes with 0.9.17-2ubuntu2