我正在运行 22.04.4 LTS 并启用 Ubuntu Pro 支持。
“突然”我的 Firefox 和 Chromium 停止启动。如果我尝试从终端启动它们，我会收到以下错误：
(base) pippo@Ganimede:~$ firefox
cannot create mount point for file "/tmp/snap.rootfs_vDF3Sz/README.md": Permission denied
(base) pippo@Ganimede:~$ chromium
cannot create mount point for file "/tmp/snap.rootfs_QFJXpv/README.md": Permission denied
我尝试刷新 snap 但是它完成了操作并显示如下信息：
(base) pippo@Ganimede:~$ sudo snap refresh
[sudo] password for pippo:
Download snap "firefox" (4090) from channel "latest/stable" 4% 772kB/s 47.7serror: cannot perform the following tasks:
- Run post-refresh hook of "firefox" snap if present (run hook "post-refresh": cannot create mount point for file "/tmp/snap.rootfs_kHleRT/README.md": Permission denied)
- Run configure hook of "chromium" snap if present (run hook "configure": cannot create mount point for file "/tmp/snap.rootfs_IPuR2q/README.md": Permission denied)
(base) pippo@Ganimede:~$
如果我去读取系统日志文件，我可以找到以下几行：
Apr 6 08:31:50 Ganimede systemd[4846]: Started snap.snap-store.ubuntu-software-de50015d-5d40-460b-be18-2447e2344f53.scope.
Apr 6 08:31:50 Ganimede snap-store_ubuntu-software.desktop[11558]: cannot create mount point for file "/tmp/snap.rootfs_MwvIqr/README.md": Permission denied
Apr 6 08:31:50 Ganimede kernel: [ 3333.275378] kauditd_printk_skb: 57 callbacks suppressed
Apr 6 08:31:50 Ganimede kernel: [ 3333.275380] audit: type=1400 audit(1712385110.343:307): apparmor="DENIED" operation="capable" profile="/usr/lib/snapd/snap-confine" pid=11558 comm="snap-confine" capability=12 capname="net_admin"
Apr 6 08:31:50 Ganimede kernel: [ 3333.275385] audit: type=1400 audit(1712385110.343:308): apparmor="DENIED" operation="capable" profile="/usr/lib/snapd/snap-confine" pid=11558 comm="snap-confine" capability=38 capname="perfmon"
Apr 6 08:31:50 Ganimede kernel: [ 3333.276664] audit: type=1400 audit(1712385110.343:309): apparmor="DENIED" operation="mknod" profile="/usr/lib/snapd/snap-confine" name="/tmp/snap.rootfs_MwvIqr/README.md" pid=11558 comm="snap-confine" requested_mask="c" denied_mask="c" fsuid=0 ouid=0
在我看来这是一个 Apparmor“问题”，但是......我不知道如何修复这些错误......
有关 snap 版本以及我的系统上安装的 Firefox 和 Chromium snap 的一些详细信息：
(base) pippo@Ganimede:~$ sudo snap version
snap 2.61.3+22.04
snapd 2.61.3+22.04
series 16
ubuntu 22.04
kernel 5.15.0-101-generic
(base) pippo@Ganimede:~$
(base) pippo@Ganimede:~$ sudo snap info --verbose firefox
name: firefox
summary: Mozilla Firefox web browser
health:
status: unknown
message: health has not been set
publisher: Mozilla✓
store-url: https://snapcraft.io/firefox
contact: https://support.mozilla.org/kb/file-bug-report-or-feature-request-mozilla
links:
contact:
- https://support.mozilla.org/kb/file-bug-report-or-feature-request-mozilla
website:
- https://www.mozilla.org/firefox/
license: unset
description: |
Firefox is a powerful, extensible web browser with support for modern web application
technologies.
commands:
- firefox
- firefox.geckodriver
notes:
private: false
confinement: strict
devmode: false
jailmode: false
trymode: false
enabled: true
broken: false
ignore-validation: false
base: core22
snap-id: 3wdHCAVyZEmYsCMFDE9qt92UV8rC8Wdk
tracking: latest/stable
refresh-date: today at 08:00 CEST
channels:
latest/stable: 124.0.2-1 2024-04-02 (4090) 281MB -
latest/candidate: 124.0.2-1 2024-04-01 (4090) 281MB -
latest/beta: 125.0b8-1 2024-04-03 (4102) 282MB -
latest/edge: 126.0a1 2024-04-05 (4108) 302MB -
esr/stable: 115.9.1esr-1 2024-03-22 (4032) 256MB -
esr/candidate: 115.9.1esr-1 2024-03-22 (4032) 256MB -
esr/beta: ↑
esr/edge: ↑
installed: 124.0.1-1 (4033) 281MB -
(base) pippo@Ganimede:~$ sudo snap info --verbose chromium
name: chromium
summary: Chromium web browser, open-source version of Chrome
health:
status: unknown
message: health has not been set
publisher: Canonical✓
store-url: https://snapcraft.io/chromium
contact: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bugs?field.tag=snap
links:
contact:
- https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bugs?field.tag=snap
website:
- https://code.launchpad.net/~chromium-team/chromium-browser/+git/snap-from-source
license: unset
description: |
An open-source browser project that aims to build a safer, faster, and more
stable way for all Internet users to experience the web.
commands:
- chromium.chromedriver
- chromium
notes:
private: false
confinement: strict
devmode: false
jailmode: false
trymode: false
enabled: true
broken: false
ignore-validation: false
base: core22
snap-id: XKEcBqPM06H1Z7zGOdG5fbICuf8NWK5R
tracking: latest/stable
refresh-date: today at 08:00 CEST
channels:
latest/stable: 123.0.6312.105 2024-04-04 (2811) 168MB -
latest/candidate: 123.0.6312.105 2024-04-03 (2811) 168MB -
latest/beta: 124.0.6367.18 2024-04-02 (2809) 169MB -
latest/edge: 125.0.6382.3 2024-04-02 (2810) 169MB -
installed: 123.0.6312.58 (2795) 168MB -
(base) pippo@Ganimede:~$
非常感谢，Arpagone
答案1
今天升级失败后，我遇到了类似的问题。在升级过程中，一个软件包（在我的情况下libkcolorpicker-qt6-0）安装失败（“尝试覆盖‘/usr/lib/x86_64-linux-gnu/libkColorPicker.so.0’，它也在软件包 libkcolorpicker0:amd64 0.1.6-2 中”）。我通过手动删除其中一个冲突的软件包并修复升级来纠正此问题：
sudo dpkg --remove libkcolorpicker0
sudo apt --fix-broken install
这触发了许多之前被卡住的更新脚本，其中一个脚本snapd发出了多个警告：
Setting up snapd (2.61.3+22.04) ...
Installing new version of config file /etc/apparmor.d/usr.lib.snapd.snap-confine.real ...
snapd.failure.service is a disabled or a static unit not running, not starting it.
snapd.snap-repair.service is a disabled or a static unit not running, not starting it.
Failed to restart snapd.mounts-pre.target: Operation refused, unit snapd.mounts-pre.target may be requested by dependency only (it is configured to refuse manual start/stop).
之后 Firefox 就可以正常启动了。我对此的解释是，最终升级snapd没有正确完成，而软件包的完整设置终于解决了问题。
我使用的是 KDE Neon 6.0，所以我的具体问题可能与您不同，但问题出现的时间和版本snapd似乎匹配。