Bug 1908387 - Windows with transparency show whatever is below
Summary: Windows with transparency show whatever is below
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: xrdp
Version: epel8
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: ---
Assignee: Bojan Smojver
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-12-16 15:13 UTC by Kyrre Ness Sjøbæk
Modified: 2026-02-08 01:09 UTC (History)
3 users (show)

Fixed In Version: xrdp-0.10.5-1.el8 xrdp-0.10.5-1.el9 xrdp-0.10.5-1.fc42 xrdp-0.10.5-1.fc43
Clone Of:
Environment:
Last Closed: 2026-02-08 00:22:58 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)

Description Kyrre Ness Sjøbæk 2020-12-16 15:13:07 UTC
Description of problem:
I have a RHEL8.3 workstation with xrdp-0.9.14-3.el8.x86_64 installed.
This provides a login to a desktop for people to run various applications, typically based on "ROOT" and "Geant4" as well as other simulation and analysis tools for high energy physics.

However, whenever a user starts an application that presents a window that has transparent elements, it shows the window (or desktop). This is not supposed to happen, e.g. with Geant4 we end up seeing the text of a terminal below through a transparent object in the OpenGL viewer, and in ROOT's TCanvas many of the lines drawn in graphs or in the general UI (menus etc.) become transparent, making them hard to read.

Version-Release number of selected component (if applicable):
xrdp-0.9.14-3.el8.x86_64

How reproducible:
Every time

Steps to Reproduce:
1. Install xrdp, leave default configuration
2. Login (with Gnome3 / XVnc session)
3. Start such a program, i.e. with root:
$ root
root [0] TH1D* v = new TH1D("","",50,-1,1);
root [1] v->FillRandom("gaus",1000)
root [2] v->Draw()

Actual results:
Background bleeds through windows (not intentionally)

Expected results:
No bleed-through

Additional info:

This can be fixed by a configuration change:
In /etc/xrdp/xrdp.ini, set
max_bpp=24 in section [Globals]
and
xserverbpp=24 in section [Xvnc]

With this, it works as intended.
Submitting a bug report in hope that the default config or underlying issue can be fixed, or so that other having the same problem can find it easilly.

Also, note that connecting with "wrong" bit depth (e.g. in Remmina) results in the connection being closed immediately following acceptance of password. This also happens if changing the config file and restarting xvnc without killing the underlying vnc server process -- service xvnc restart should probably result in killing of vnc server processes?

If wanted, I can configure it back to the buggy state and add a screenshot showing the issue.

Comment 1 Bojan Smojver 2020-12-16 20:32:36 UTC
If I'm not mistaken, this looks like an upstream problem (i.e. not Fedora/EPEL specific). I think you should probably open an issue upstream about this, so that it can be fixed for everyone and Fedora/EPEL can then ship the usual, default configuration.

https://github.com/neutrinolabs/xrdp/issues

Comment 2 Fedora Admin user for bugzilla script actions 2021-02-17 00:11:41 UTC
This package has changed maintainer in Fedora. Reassigning to the new maintainer of this component.

Comment 3 Fedora Admin user for bugzilla script actions 2021-02-18 00:07:29 UTC
This package has changed maintainer in Fedora. Reassigning to the new maintainer of this component.

Comment 4 Fedora Update System 2026-01-28 08:20:10 UTC
FEDORA-2026-b409dad73e (xrdp-0.10.5-1.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-b409dad73e

Comment 5 Fedora Update System 2026-01-28 08:20:10 UTC
FEDORA-EPEL-2026-5c626357f7 (xrdp-0.10.5-1.el8) has been submitted as an update to Fedora EPEL 8.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-5c626357f7

Comment 6 Fedora Update System 2026-01-29 00:23:19 UTC
FEDORA-EPEL-2026-d12ea63356 has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-d12ea63356

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2026-01-29 01:02:03 UTC
FEDORA-EPEL-2026-5c626357f7 has been pushed to the Fedora EPEL 8 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-5c626357f7

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 8 Fedora Update System 2026-01-29 01:44:21 UTC
FEDORA-2026-febea89ac3 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-febea89ac3`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-febea89ac3

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 9 Fedora Update System 2026-01-29 01:51:31 UTC
FEDORA-2026-b409dad73e has been pushed to the Fedora 42 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-b409dad73e`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-b409dad73e

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 10 Fedora Update System 2026-01-31 16:53:25 UTC
FEDORA-2026-febea89ac3 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-febea89ac3`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-febea89ac3

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 11 Fedora Update System 2026-01-31 17:23:22 UTC
FEDORA-EPEL-2026-5c626357f7 has been pushed to the Fedora EPEL 8 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-5c626357f7

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 12 Fedora Update System 2026-01-31 17:30:21 UTC
FEDORA-EPEL-2026-d12ea63356 has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-d12ea63356

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 13 Fedora Update System 2026-01-31 18:29:03 UTC
FEDORA-2026-b409dad73e has been pushed to the Fedora 42 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-b409dad73e`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-b409dad73e

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 14 Fedora Update System 2026-02-08 00:22:58 UTC
FEDORA-EPEL-2026-5c626357f7 (xorgxrdp-0.10.5-1.el8 and xrdp-0.10.5-1.el8) has been pushed to the Fedora EPEL 8 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 15 Fedora Update System 2026-02-08 00:36:02 UTC
FEDORA-EPEL-2026-d12ea63356 (xorgxrdp-0.10.5-1.el9 and xrdp-0.10.5-1.el9) has been pushed to the Fedora EPEL 9 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 16 Fedora Update System 2026-02-08 00:51:54 UTC
FEDORA-2026-b409dad73e (xorgxrdp-0.10.5-1.fc42 and xrdp-0.10.5-1.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 17 Fedora Update System 2026-02-08 01:09:09 UTC
FEDORA-2026-febea89ac3 (xorgxrdp-0.10.5-1.fc43 and xrdp-0.10.5-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.


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