Same problem in Ubuntu 24.04.2 LTS - running ubuntu-bug (or xdaliclock
or evince) via ssh from Ubuntu 20.04.6 LTS causes windows to open on the
display of the remote machine (24.04.2 LTS), not on the display of the
local machine (20.04.6 LTS). To reproduce:
On the local machine 20.04.6 LTS:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.6 LTS
Release: 20.04
Codename: focal
$ echo $DISPLAY
:0
$ ps laxww | grep 'X.* :[0] '
0 1000 6352 6324 20 0 4144 1900 do_wai S+ tty1 0:00
xinit /etc/X11/xinit/xinitrc -- /etc/X11/xinit/xserverrc :0 vt1 -keeptty -auth
/tmp/serverauth.5UYJOujUP2
4 1000 6353 6352 20 0 1284804 96728 ep_pol Sl tty1 29:54
/usr/lib/xorg/Xorg -nolisten tcp :0 vt1 -keeptty -auth
/tmp/serverauth.5UYJOujUP2
$ ssh tablet
Welcome to Ubuntu 24.04.2 LTS (GNU/Linux 6.8.0-60-generic x86_64)
[...]
I am now logged in to the remote machine 24.04.2 LTS via ssh.
This machine runs Xwayland:
$ echo $DISPLAY
localhost:10.0
$ ps laxww | grep 'X.* :[0] '
0 1000 4168 3418 20 0 398576 87356 ep_pol Sl ? 0:01
/usr/bin/Xwayland :0 -rootless -noreset -accessx -core -auth
/run/user/1000/.mutter-Xwaylandauth.YP2362 -listenfd 4 -listenfd 5 -displayfd 6
-initfd 7 -byteswappedclients
On the remote machine I try all of these commands and they work fine
(displaying correctly on the local Xorg display, not on the remote Xwayland
display):
- xcalc, xclock, xdpyinfo, xeyes, xterm, xload, xlogo, xmessage, xev, xli
- xeglgears, xlsatoms, xlsclients, xmag, xman, xmore, xournal
- xprop, xrandr, xrdb, xrefresh, xsetroot, xvinfo, xwd, xwininfo
- gvim, glxgears
...all open windows correctly on the LOCAL machine Xorg display.
On the remote machine I try these commands below and they do not use the
LOCAL machine Xorg display; they incorrectly open on the REMOTE Xwayland
display:
$ ubuntu-bug xxx
dpkg-query: no packages found matching xxx
...opens window INcorrectly on the REMOTE machine Xwayland display...
$ xdaliclock
xdaliclock: Gdk: gdk_x11_window_get_xid: assertion 'GDK_IS_X11_WINDOW
(window)' failed
xdaliclock: Gdk: gdk_x11_window_get_xid: assertion 'GDK_IS_X11_WINDOW
(window)' failed
...opens window INcorrectly on the REMOTE machine Xwayland display...
$ evince file.pdf
...opens window INcorrectly on the REMOTE machine Xwayland display...
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to apport in Ubuntu.
https://bugs.launchpad.net/bugs/1989545
Title:
ubuntu-bug fails when run via remote SSH login
Status in apport package in Ubuntu:
New
Bug description:
I'm running Ubuntu 20.04 on my desktop. I SSH into my laptop running
22.04:
desktop$ ssh laptop
laptop$ sudo -sE
laptop#
If I now run most any X11 client applications (e.g. xload, xterm)
using this laptop SSH command line, they correctly open windows on my
desktop X11 display, not on my laptop, using the DISPLAY variable set
to localhost:10.0. But ubuntu-bug does not do this when I run it on
the laptop:
laptop# ubuntu-bug /etc/network/if-up.d/resolved
At this point, the laptop display incorrectly has the apport X11 window
open. The apport window does not open on my desktop, like any other
X11 application would. It appears to ignore my DISPLAY variable.
If I go over to the laptop and try to continue with the bug report,
everything falls apart when it tries to start up a web browser. I get
all these error messages on my SSH terminal screen:
update.go:85: cannot change mount namespace according to change mount
(/var/lib/snapd/hostfs/usr/local/share/fonts /usr/local/share/fonts none
bind,ro 0 0): not a directory
update.go:85: cannot change mount namespace according to change mount
(/var/lib/snapd/hostfs/usr/share/libreoffice/help /usr/share/libreoffice/help
none bind,ro 0 0): cannot create directory "/usr/share/libreoffice/help":
permission denied
update.go:85: cannot change mount namespace according to change mount
(/var/lib/snapd/hostfs/usr/share/xubuntu-docs /usr/share/xubuntu-docs none
bind,ro 0 0): cannot open directory "/var/lib": permission denied
/home/username/Music was removed, reassigning MUSIC to homedir
X11 connection rejected because of wrong authentication.
X11 connection rejected because of wrong authentication.
Error: cannot open display: localhost:10.0
X11 connection rejected because of wrong authentication.
X11 connection rejected because of wrong authentication.
X11 connection rejected because of wrong authentication.
X11 connection rejected because of wrong authentication.
If ubuntu-bug cannot work over SSH with DISPLAY=localhost:10.0, it should
detect this and not even try.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: apport 2.20.11-0ubuntu82.1
ProcVersionSignature: Ubuntu 5.15.0-48.54-generic 5.15.53
Uname: Linux 5.15.0-48-generic x86_64
ApportLog:
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Wed Sep 14 02:33:18 2022
InstallationDate: Installed on 2020-09-08 (735 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
SourcePackage: apport
UpgradeStatus: Upgraded to jammy on 2022-04-04 (162 days ago)
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https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1989545/+subscriptions
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