AlmaLinux: Issue with H.264 when client request color depth 32 bit (xorgxrdp) #3405
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@hauihau - did you install xrdp using |
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I've had a poke around in the source, and this looks currently like a memory allocation error of some sort. Are you able to provide the following?
Thanks. |
Both xrdp and xorgxrdp were installed with dnf from EPEL 9 repository, |
I'm not aware of any ini file, bit this is the content of the Default.rdp: I have two monitors connected to a USB-C/Thunderbolt docking station, both displays have 2560x1440. |
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Thanks @hauihau - I'll try to reproduce this here using similar settings. |
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I'm having a few problems with the debuffer on Alma 9, so I've not managed to reproduce this yet. A thought occurs to me however; what do you get for the following command? |
noopenh264-0.1.0~openh264_2.4.1-2.el9.x86_64 |
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I have the same issue on RHEL 9.5 with latest updates. Was working before latest update. |
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I think I can see what's going on here. With You should both have My (possibly incorrect) understanding is that there are some concerns over H264 patents which is why the I'll need to look into why this has happened with a fresh Alma install. The following command might fix things, but I'd only try it on a test system for the time being until I've looked in more detail. Please don't run this in production yet! |
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I can see where I've made a vanilla installation of Alma 9.5 with EPEL using this procedure:-
Then:- $ sudo dnf install xrdp Last metadata expiration check: 1:55:56 ago on Sat Jan 25 14:36:39 2025. Dependencies resolved. ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: xrdp x86_64 1:0.10.2-7.el9 epel 593 k Installing dependencies: dbus-x11 x86_64 1:1.12.20-8.el9 appstream 24 k fuse3-libs x86_64 3.10.2-9.el9 appstream 90 k imlib2 x86_64 1.7.4-1.el9 epel 225 k noopenh264 x86_64 0.1.0~openh264_2.4.1-2.el9 epel 22 k tigervnc-license noarch 1.14.1-1.el9_5 appstream 17 k tigervnc-server-minimal x86_64 1.14.1-1.el9_5 appstream 1.2 M Installing weak dependencies: xrdp-selinux x86_64 1:0.10.2-7.el9 epel 13 k Transaction Summary ================================================================================ Install 8 Packages Total download size: 2.1 M Installed size: 7.4 M Is this ok [y/N]: There is no sign of the However, if at this point, I run a Now I can see the openh264 package:- and, more importantly:- $ sudo dnf install xrdp Last metadata expiration check: 0:01:19 ago on Sat Jan 25 16:56:06 2025. Dependencies resolved. ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: xrdp x86_64 1:0.10.2-7.el9 epel 593 k Installing dependencies: dbus-x11 x86_64 1:1.12.20-8.el9 appstream 24 k fuse3-libs x86_64 3.10.2-9.el9 appstream 90 k imlib2 x86_64 1.7.4-1.el9 epel 225 k openh264 x86_64 2.3.1-1.el9 epel-cisco-openh264 425 k tigervnc-license noarch 1.14.1-1.el9_5 appstream 17 k tigervnc-server-minimal x86_64 1.14.1-1.el9_5 appstream 1.2 M Installing weak dependencies: xrdp-selinux x86_64 1:0.10.2-7.el9 epel 13 k Transaction Summary ================================================================================ Install 8 Packages Total download size: 2.5 M Installed size: 8.5 M Is this ok [y/N]: Carrying on with the installation works perfectly. What is happening here, is that the If you are in the situation where xrdp has been installed along with
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matt335672
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xrdp version
0.10.2
Detailed xrdp version, build options
Operating system & version
RedHat Enterprise Linix 9.4 / Almalinux 9.5
Installation method
dnf / apt / zypper / pkg / etc
Which backend do you use?
xorgxrdp 0.10.3
What desktop environment do you use?
Xfce
Environment xrdp running on
Physical and virtual systems
What's your client?
Windows 11 Microsoft Client
Area(s) with issue?
Graphic glitches, Other
Steps to reproduce
We have just updates to the lastest version of xrdp and xorgxrdp on our RedHat and Alma Linux systems.
When we connect to the systems with 32 bit color depth, we only see a blue screen and the systemd journal contains lot's of lines with
If we reduce the color depth to 24 or less, everything is working as expected.
There is also in the logs when conencting:
Color depth 32 bit:
Color depth <32 bit:
✔️ Expected Behavior
Seeing the Xfce desktop
❌ Actual Behavior
The window has just blue background, no Xfce desktop items visible
Anything else?
Please let me know if you need further details or logs.
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