*** This bug is a duplicate of bug 2047256 ***
https://bugs.launchpad.net/bugs/2047256
for me the bug has disappeared since the version of Gnome 46
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https://bugs.l
*** This bug is a duplicate of bug 2047256 ***
https://bugs.launchpad.net/bugs/2047256
** This bug has been marked a duplicate of bug 2047256
Ubuntu 24.04 Some image thumbnails no longer displayed
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it seems another fallout from the new apparmor restriction described in
bug #2046844 and probably a conflict with the sandboxing in
https://gitlab.gnome.org/GNOME/gnome-desktop/-/blob/master/libgnome-
desktop/gnome-desktop-thumbnail-script.c
** Changed in: nautilus (Ubuntu)
Importance: Undecide
* olive <2054...@bugs.launchpad.net>:
> the solution to not lose the configuration after the reboot :
by creating a file in /etc/sysctl.d, e.g.
/etc/sysctl.d/10-fix_nautilus
containing
kernel.apparmor_restrict_unprivileged_userns=0
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the solution to not lose the configuration after the reboot :
sudo nano /etc/rc.local
The bash:
#!/bin/bash
# Votre commande ici
sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0
sudo chmod +x /etc/rc.local
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De
THANKS, I hadn't emptied the folder ~/.cache/thumbnails/fail/gnome-
thumbnail-factory
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https://bugs.launchpad.net/bugs/2054183
Title:
nautilus not generating thumbna
* corrado venturini <2054...@bugs.launchpad.net>:
> Suggested command seems ok but thumbnail generation still does not work (also
> after reboot)
A reboot resets the "kernel.apparmor_restrict_unprivileged_userns" back
to its default value, so you must not reboot :)
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In my system not upgraded but installed from ISO Ubuntu 24.04 LTS "Noble
Numbat" - Daily amd64 (20240215) I have the same problem but my
.cache/thumbnails is as follows
corrado@corrado-n4-nn-0215:~/.cache/thumbnails$ tree -d
.
├── fail
│ └── gnome-thumbnail-factory
├── large
└── normal
gnome-t
Suggested command seems ok but thumbnail generation still does not work (also
after reboot)
corrado@corrado-n4-nn-0215:~$ sudo sysctl -w
kernel.apparmor_restrict_unprivileged_userns=0
[sudo] password for corrado:
kernel.apparmor_restrict_unprivileged_userns = 0
corrado@corrado-n4-nn-0215:~$
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: nautilus (Ubuntu)
Status: New => Confirmed
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After some digging I found
https://github.com/flatpak/flatpak/issues/5462
and alas:
sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0
makes thumbnail generation work again.
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I id some tests, and while root was able to create thumbnails in
nautilus, I checked the logs and found:
Feb 17 09:20:51 comet kernel: audit: type=1400 audit(1708158051.561:1699):
apparmor="DENIED" operation="userns_create" class="namespace" info="User
namespace creation restricted" error=-13 pr
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