The app won't open in RDP session. #34

archerallstars · 2021-05-31T09:36:40Z

The app works fine in a normal session. But when I remoted my desktop through RDP connection (xrdp) and tried to open the app, nothing happened even after entering my user password.

OS: Ubuntu 21.04 - 64 bit.
I install the app in Ubuntu store.

costales · 2021-05-31T18:19:18Z

Hi, I would say it is because of Wayland. I can't do anything about it. Could you try x.org? Thanks. -- Costales.

…

On Mon, May 31, 2021 at 11:36 AM Parinya Teerakasemsuk < ***@***.***> wrote: The app works fine in a normal session. But when I remoted my desktop through RDP connection (xrdp) and tried to open the app, nothing happened even after entering my user password. OS: Ubuntu 21.04 - 64 bit. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#34>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABM5GQWHVGWBOMTVLK67YB3TQNKDNANCNFSM452RHTUA> .

archerallstars · 2021-06-01T01:05:56Z

Hi, I would say it is because of Wayland. I can't do anything about it. Could you try x.org? Thanks. -- Costales.

I am using x.org since xrdp supports only x.org, no Wayland. Also, Wayland doesn't support RDP through PipeWire yet.

fama · 2021-11-16T15:19:28Z

Same problem here. Running Linux Mint Cinnamon 20.2 version. When I connect over XRDP to the machine, I get the errors:

Running gufw in XRDP session gets the following error:

$ sudo gufw
/usr/bin/gufw: line 2: [: =: unary operator expected
No protocol specified
Unable to init server: Could not connect: Connection refused
No protocol specified
Unable to init server: Could not connect: Connection refused

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_modifier_mask: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gdk-CRITICAL **: 09:11:30.990: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.990: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.991: _gtk_style_provider_private_get_settings: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.991: _gtk_style_provider_private_get_settings: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed

(gufw.py:74571): Gtk-CRITICAL **: 09:11:30.991: _gtk_style_provider_private_get_settings: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
/usr/bin/gufw-pkexec: line 10: 74571 Segmentation fault      (core dumped) python3 ${LOCATIONS[${i}]} $1

The session is X11:

echo $XDG_SESSION_TYPE
x11

The first error is unrelated. When running the first line in /bin/gufw makes the test in the if brackets fail:

echo $(loginctl show-session $(loginctl|grep $(whoami) |awk '{print $1}') -p Type)
Type=x11 Type=x11 Type=x11

I was able to start the gufw preserving the environment (the unary operator error is still there, but the app launched):

sudo -E gufw
/usr/bin/gufw: line 2: [: =: unary operator expected

dominikborkowski · 2022-09-19T13:00:43Z

There's a bug filed with Ubuntu itself, we'll see which one gets more traction. There are two issues here:

startup script parses output of loginctl and it breaks if there are more than one lines (which is expected on xrdp connection). To solve that the second line of /bin/gufw needs a small head -1 change:

from:

if [ $(loginctl show-session $(loginctl|grep $(whoami) |awk '{print $1}') -p Type) = "Type=wayland" ]; then

to

if [ $(loginctl show-session $(loginctl|grep $(whoami) |awk '{print $1}') -p Type | head -1 ) = "Type=wayland" ]; then

Step 1 will not solve segfault, that's caused by polkit policy not having the correct path. Adjust /usr/share/polkit-1/actions/com.ubuntu.pkexec.gufw.policy and change:

    <annotate key="org.freedesktop.policykit.exec.path">/usr/bin/gufw-pkexec</annotate>

To:

    <annotate key="org.freedesktop.policykit.exec.path">/bin/gufw-pkexec</annotate>

Hope that helps folks looking for a solution, and it makes it into Ubuntu's repos. As it stands, both 20 and 22 are affected.

dominikborkowski · 2022-09-19T14:02:43Z

I can't believe I missed it earlier, the issue is caused by Ubuntu's decision to symlink /bin to /usr/bin. With /bin/ being earlier in $PATH, this means /bin/gufw-pkexec is executed and fails.

costales · 2022-09-19T20:18:09Z

Hi Dominik, Thank you for your feedback. But that code was removed in early releases: https://github.com/costales/gufw/blob/master/bin/gufw In which Ubuntu version happens that? It should be freeze and can't symlink that directory. Best regards.

dominikborkowski · 2022-09-19T20:43:50Z

Both 20.04.1-1ubuntu1 and 22.04.0-ubuntu1 (latest packages for Ubuntu 20 LTS and 22 LTS) show: <annotate key="org.freedesktop.policykit.exec.path">/usr/bin/gufw-pkexec</annotate> Interestingly enough, further investigation reveals that XRDP sessions get a different $PATH order than direct sessions, which explains why this policy seems to cause segfault: $PATH of a user who logs in via xrdp into XFCE on Ubuntu: ***@***.***:~$ echo $PATH /sbin:/bin:/usr/bin:/usr/local/bin:/snap/bin ***@***.***:~$ ssh localhost ***@***.***'s password: Welcome to Ubuntu 20.04.5 LTS (GNU/Linux 5.15.0-1019-aws x86_64) * Documentation: https://help.ubuntu.com * Management: https://landscape.canonical.com * Support: https://ubuntu.com/advantage <https://ubuntu.com/advantage> Last login: Mon Sep 19 20:34:30 2022 from 127.0.0.1 ***@***.***:~$ echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/snap/bin ***@***.***:~$ Because of the $PATH order, /bin/gufw wins when executed by users who use xrdp. I’ll do some more digging, but that explains why people testing it just via local sessions never encounter this issue. Cheers!

…

On Sep 19, 2022, at 4:18 PM, Costales ***@***.***> wrote: Hi Dominik, Thank you for your feedback. But that code was removed in early releases: https://github.com/costales/gufw/blob/master/bin/gufw In which Ubuntu version happens that? It should be freeze and can't symlink that directory. Best regards. — Reply to this email directly, view it on GitHub <#34 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAYV5JUJDGLOAANIAUNVQULV7DDAZANCNFSM452RHTUA>. You are receiving this because you commented.

dominikborkowski · 2022-09-28T14:22:45Z

A small update. The issue ultimately lies with xrdp not reading /etc/environment and having wrong order of elements in $PATH. It was identified by upstream, and fixed in newer versions of Debian and Ubuntu (22 only).

To fix this on earlier versions of Ubuntu, /etc/pam.d/xrdp-sesman will need to include two additional directives (line 2 & 3), the full file should look like this:

#%PAM-1.0
auth required pam_env.so readenv=1
auth required pam_env.so readenv=1 envfile=/etc/default/locale
@include common-auth
@include common-account
@include common-session
@include common-password

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The app won't open in RDP session. #34

The app won't open in RDP session. #34

archerallstars commented May 31, 2021 •

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costales commented May 31, 2021 via email

archerallstars commented Jun 1, 2021

fama commented Nov 16, 2021

dominikborkowski commented Sep 19, 2022 •

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dominikborkowski commented Sep 19, 2022

costales commented Sep 19, 2022 via email

dominikborkowski commented Sep 19, 2022 via email

dominikborkowski commented Sep 28, 2022

The app won't open in RDP session. #34

The app won't open in RDP session. #34

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archerallstars commented May 31, 2021 • edited Loading

costales commented May 31, 2021 via email

archerallstars commented Jun 1, 2021

fama commented Nov 16, 2021

dominikborkowski commented Sep 19, 2022 • edited Loading

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costales commented Sep 19, 2022 via email

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archerallstars commented May 31, 2021 •

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dominikborkowski commented Sep 19, 2022 •

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