Prohibited Client Endianness message while using X11 applications from Fedora 38 to Oracle SPARC Solaris 11.x

Ask Fedora
1

I need detailed steps about how to implement solution provided in the following URL:

https://fedoraproject.org/wiki/Changes/XServerProhibitsByteSwappedClients

Thank you

2

For me, it is a blocker, not to have X11 applications running on Fedora 38. i tried the solution like adding a file including the snippet in /etc/X11/x.org.d and in /use/share/X11, but it didnā€™t work. I also tried the ā€˜gsettingsā€™ command, but it didnā€™t work either.

I always relied on Fedora running X applications like Oracle runInstaller, and i donā€™t want to give up Fedora because of that, so detailed steps are highly appreciated on how to implement the solution.

Thank you.

3

Hello,

This is exactly what is happening when I try to run an X11 program on Fedora 38

$ssh -X to the database server

After successful login:

$ owm
Prohibited client endianess, see the Xserver man page Exiting
java.lang.NullPointerException
at oracle.ewt.lwAWT.BufferedApplet.(Unknown Source)
at oracle.sysman.emSDK.client.appContainer.WebApplication.(WebApplication.java:752)
at oracle.security.admin.wltmgr.owma.OwmaApp.(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:357)
at java.lang.Class.newInstance(Class.java:310)
at oracle.sysman.emSDK.client.appContainer.WebApplication.main(WebApplication.java:3316)
Done.

4

For Wayland, I tried the below command on Fedora 38, rebooted it, but it did not work:

sudo gsettings set org.gnome.mutter.wayland xwayland-allow-byte-swapped-clients true

Regards.

5

Donā€™t use sudo. Itā€™s a dconf setting for your account, not rootā€™s.

$ gsettings set org.gnome.mutter.wayland xwayland-allow-byte-swapped-clients true

1 Like
6

With Wayland, I tried the same command without sudo, rebooted Fedora, but it did not work.

7

This is just to ask how to escalate this issue.

8

It is important to know how to solve this issue because I donā€™t want to ditch Fedora for that.

9

It should be a file in /etc/X11/xorg.conf.d/, with a filename ending in .conf, containing:

Section "ServerFlags"
   Option "AllowByteSwappedClients" "on"
EndSection

Note the key is AllowByteSwappedClients according to upstream and the Fedora patch, not AllowSwappedClients as written on the wiki (Iā€™ll update it if you confirm it works).

If it still doesnā€™t work then file a bug against xorg-x11-server component.

10

Hello,

With GNOME X, it worked successfully. Thank you very much.

With Wayland, I ran ā€œgsettings set org.gnome.mutter.wayland xwayland-allow-byte-swapped-clients trueā€, rebooted, but it did not work.

Regards,
Pierre

1 Like
11

Iā€™ve fixed the wiki.

Not sure about Wayland, but you would file a bug against mutter in that case.

12

I will open a ticket with mutter.

Thank you very much.