The app center in Ubuntu, as we known "snaps center", is user-friendly.
Google for snaps
When i google which snap can play MP4 in Ubuntu, i got VLC.
App Center
I searched and then installed the VLC within stable channel in the app center.
Error
But it didn't work however click, so i deepseek "I have installed VLC by the App Center on my computer within the Ubuntu system, but it did not worked however you click". Then i got a lot of guides many for reinstalling but i did not directly trust deepfool(sometimes indeed).
If VLC still won't start, run vlc from the terminal and check the error output.This message is the most important clue for finding a solution online. I continued to ask how to run VLC in the terminal, and deepseek gave a final tip how to check for error messages: if VLC won't start, running vlc in the terminal is the best way to see specific error messages. Keep patience if you want: Fix VLC Installation on Ubuntu Guide.
Fixed with Google AI
After that, i went to google AI and fixed in the terminal:
bash
donovon@donovon-TM1613:~$ vlc
VLC media player 3.0.20 Vetinari (revision 3.0.20-1-g2617de71b6)
[00006413cfd102d0] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
Qt: Session management error: Could not open network socket
Fontconfig warning: FcPattern object width does not accept value [75 100)
Segmentation fault (core dumped)
donovon@donovon-TM1613:~$ cvlc
Command 'cvlc' not found, but can be installed with:
sudo apt install vlc-bin
donovon@donovon-TM1613:~$ vlc --version
VLC media player 3.0.20 Vetinari (revision 3.0.20-1-g2617de71b6)
VLC version 3.0.20 Vetinari (3.0.20-1-g2617de71b6)
Compiled by videolan on runner-st17ydin-project-435-concurrent-1 (Oct 31 2023 02:16:47)
Compiler: gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
This program comes with NO WARRANTY, to the extent permitted by law.
You may redistribute it under the terms of the GNU General Public License;
see the file named COPYING for details.
Written by the VideoLAN team; see the AUTHORS file.
donovon@donovon-TM1613:~$ snap list
Name Version Rev Tracking Publisher Notes
bare 1.0 5 latest/stable canonical✓ base
core 16-2.61.4-20250626 17247 latest/stable canonical✓ core
core18 20250910 2952 latest/stable canonical✓ base
core22 20250822 2133 latest/stable canonical✓ base
firefox 144.0-2 7024 latest/stable/... mozilla✓ -
firmware-updater 0+git.0052f6b 210 1/stable/... canonical✓ -
gnome-42-2204 0+git.837775c-sdk0+git.7b07595 226 latest/stable/... canonical✓ -
gtk-common-themes 0.1-81-g442e511 1535 latest/stable/... canonical✓ -
snap-store 0+git.90575829 1270 2/stable/... canonical✓ -
snapd 2.71 25202 latest/stable canonical✓ snapd
snapd-desktop-integration 0.9 315 latest/stable/... canonical✓ -
vlc 3.0.20-1-g2617de71b6 3777 latest/stable videolan✓ -
donovon@donovon-TM1613:~$ snao info vlc
Command 'snao' not found, did you mean:
command 'snap' from deb snapd (2.71+ubuntu24.04)
command 'snac' from deb snac2 (2.42-1)
Try: sudo apt install <deb name>
donovon@donovon-TM1613:~$ snap info vlc
name: vlc
summary: The ultimate media player
publisher: VideoLAN✓
store-url: https://snapcraft.io/vlc
contact: https://www.videolan.org/support/
license: unset
description: |
VLC is the VideoLAN project's media player.
Completely open source and privacy-friendly, it plays every multimedia file and streams.
It notably plays MKV, MP4, MPEG, MPEG-2, MPEG-4, DivX, MOV, WMV, QuickTime, WebM, FLAC, MP3,
Ogg/Vorbis files, BluRays, DVDs, VCDs, podcasts, and multimedia streams from various network
sources. It supports subtitles, closed captions and is translated in numerous languages.
commands:
- vlc
snap-id: RT9mcUhVsRYrDLG8qnvGiy26NKvv6Qkd
tracking: latest/stable
refresh-date: yesterday at 19:12 EDT
channels:
latest/stable: 3.0.20-1-g2617de71b6 2024-03-26 (3777) 336MB -
latest/candidate: 3.0.20-1-g2617de71b6 2024-03-26 (3777) 336MB -
latest/beta: 3.0.21-1-74-g47e6c1b726 2024-09-30 (4252) 336MB -
latest/edge: 4.0.0-dev-28288-g586bf64e5f 2024-03-28 (4070) 703MB -
installed: 3.0.20-1-g2617de71b6 (3777) 336MB -
donovon@donovon-TM1613:~$ sudo rm /var/cache/fontconfig/*.cache*
[sudo] password for donovon:
donovon@donovon-TM1613:~$ ls -a /var/cache/fontconfig/*
/var/cache/fontconfig/CACHEDIR.TAG
donovon@donovon-TM1613:~$ rm ~/.cache/fontconfig/*.cache*
donovon@donovon-TM1613:~$ ls ~/.cache/fontconfig/*
/home/donovon/.cache/fontconfig/CACHEDIR.TAG
donovon@donovon-TM1613:~$ fc-cache -r
donovon@donovon-TM1613:~$ ls ~/.cache/fontconfig/*
/home/donovon/.cache/fontconfig/089dead882dea3570ffc31a9898cfb69-le64.cache-9
/home/donovon/.cache/fontconfig/0bd3dc0958fa2205aaaa8ebb13e2872b-le64.cache-9
/home/donovon/.cache/fontconfig/188ac73a183f12857f63bb60a4a6d603-le64.cache-9
/home/donovon/.cache/fontconfig/2300eef321c393bfd76478a5c0e95b23-le64.cache-9
/home/donovon/.cache/fontconfig/3047814df9a2f067bd2d96a2b9c36e5a-le64.cache-9
/home/donovon/.cache/fontconfig/32b6488e5b8292a2e95c79d947e009e8-le64.cache-9
/home/donovon/.cache/fontconfig/3830d5c3ddfd5cd38a049b759396e72e-le64.cache-9
/home/donovon/.cache/fontconfig/3f7329c5293ffd510edef78f73874cfd-le64.cache-9
/home/donovon/.cache/fontconfig/4c599c202bc5c08e2d34565a40eac3b2-le64.cache-9
/home/donovon/.cache/fontconfig/573ec803664ed168555e0e8b6d0f0c7f-le64.cache-9
/home/donovon/.cache/fontconfig/57e423e26b20ab21d0f2f29c145174c3-le64.cache-9
/home/donovon/.cache/fontconfig/6333f38776742d18e214673cd2c24e34-le64.cache-9
/home/donovon/.cache/fontconfig/6cc790b63b123a6a96ee260fcdad32a9-le64.cache-9
/home/donovon/.cache/fontconfig/707971e003b4ae6c8121c3a920e507f5-le64.cache-9
/home/donovon/.cache/fontconfig/7ef2298fde41cc6eeb7af42e48b7d293-le64.cache-9
/home/donovon/.cache/fontconfig/95530828ff6c81d309f8258d8d02a23e-le64.cache-9
/home/donovon/.cache/fontconfig/9b89f8e3dae116d678bbf48e5f21f69b-le64.cache-9
/home/donovon/.cache/fontconfig/a4e60e8d1e10d2fdff3fe3037a1845fb-le64.cache-9
/home/donovon/.cache/fontconfig/c855463f699352c367813e37f3f70ea7-le64.cache-9
/home/donovon/.cache/fontconfig/cabbd14511b9e8a55e92af97fb3a0461-le64.cache-9
/home/donovon/.cache/fontconfig/CACHEDIR.TAG
/home/donovon/.cache/fontconfig/d3e5c4ee2ceb1fc347f91d4cefc53bc0-le64.cache-9
/home/donovon/.cache/fontconfig/d589a48862398ed80a3d6066f4f56f4c-le64.cache-9
/home/donovon/.cache/fontconfig/d82eb4fd963d448e2fcb7d7b793b5df3-le64.cache-9
/home/donovon/.cache/fontconfig/e13b20fdb08344e0e664864cc2ede53d-le64.cache-9
/home/donovon/.cache/fontconfig/e52a45a1c8c8fe895fc0fc8c4e6999b8-le64.cache-9
/home/donovon/.cache/fontconfig/f1f2465696798768e9653f19e17ccdc8-le64.cache-9
/home/donovon/.cache/fontconfig/fe547fea3a41b43a38975d292a2b19c7-le64.cache-9
donovon@donovon-TM1613:~$ ls -a /var/cache/fontconfig/*
/var/cache/fontconfig/CACHEDIR.TAG
donovon@donovon-TM1613:~$ sudo fc-cache -sv
Font directories:
/usr/share/fonts
/usr/local/share/fonts
/usr/share/fonts/X11
/usr/share/fonts/cMap
/usr/share/fonts/cmap
/usr/share/fonts/opentype
/usr/share/fonts/truetype
/usr/share/fonts/type1
/usr/share/fonts/X11/Type1
/usr/share/fonts/X11/encodings
/usr/share/fonts/X11/misc
/usr/share/fonts/X11/util
/usr/share/fonts/cmap/adobe-cns1
/usr/share/fonts/cmap/adobe-gb1
/usr/share/fonts/cmap/adobe-japan1
/usr/share/fonts/cmap/adobe-japan2
/usr/share/fonts/cmap/adobe-korea1
/usr/share/fonts/opentype/noto
/usr/share/fonts/opentype/urw-base35
/usr/share/fonts/truetype/arphic
/usr/share/fonts/truetype/dejavu
/usr/share/fonts/truetype/droid
/usr/share/fonts/truetype/liberation
/usr/share/fonts/truetype/noto
/usr/share/fonts/truetype/ubuntu
/usr/share/fonts/type1/urw-base35
/usr/share/fonts/X11/encodings/large
/usr/share/fonts: skipping, existing cache is valid: 0 fonts, 6 dirs
/usr/share/fonts/X11: skipping, existing cache is valid: 0 fonts, 4 dirs
/usr/share/fonts/X11/Type1: skipping, existing cache is valid: 43 fonts, 0 dirs
/usr/share/fonts/X11/encodings: skipping, existing cache is valid: 0 fonts, 1 dirs
/usr/share/fonts/X11/encodings/large: skipping, existing cache is valid: 0 fonts, 0 dirs
/usr/share/fonts/X11/misc: skipping, existing cache is valid: 89 fonts, 0 dirs
/usr/share/fonts/X11/util: skipping, existing cache is valid: 0 fonts, 0 dirs
/usr/share/fonts/cMap: skipping, existing cache is valid: 0 fonts, 0 dirs
/usr/share/fonts/cmap: skipping, existing cache is valid: 0 fonts, 5 dirs
/usr/share/fonts/cmap/adobe-cns1: skipping, existing cache is valid: 0 fonts, 0 dirs
/usr/share/fonts/cmap/adobe-gb1: skipping, existing cache is valid: 0 fonts, 0 dirs
/usr/share/fonts/cmap/adobe-japan1: skipping, existing cache is valid: 0 fonts, 0 dirs
/usr/share/fonts/cmap/adobe-japan2: skipping, existing cache is valid: 0 fonts, 0 dirs
/usr/share/fonts/cmap/adobe-korea1: skipping, existing cache is valid: 0 fonts, 0 dirs
/usr/share/fonts/opentype: skipping, existing cache is valid: 0 fonts, 2 dirs
/usr/share/fonts/opentype/noto: skipping, existing cache is valid: 80 fonts, 0 dirs
/usr/share/fonts/opentype/urw-base35: skipping, existing cache is valid: 35 fonts, 0 dirs
/usr/share/fonts/truetype: skipping, existing cache is valid: 0 fonts, 6 dirs
/usr/share/fonts/truetype/arphic: skipping, existing cache is valid: 8 fonts, 0 dirs
/usr/share/fonts/truetype/dejavu: skipping, existing cache is valid: 8 fonts, 0 dirs
/usr/share/fonts/truetype/droid: skipping, existing cache is valid: 1 fonts, 0 dirs
/usr/share/fonts/truetype/liberation: skipping, existing cache is valid: 16 fonts, 0 dirs
/usr/share/fonts/truetype/noto: skipping, existing cache is valid: 272 fonts, 0 dirs
/usr/share/fonts/truetype/ubuntu: skipping, existing cache is valid: 232 fonts, 0 dirs
/usr/share/fonts/type1: skipping, existing cache is valid: 0 fonts, 1 dirs
/usr/share/fonts/type1/urw-base35: skipping, existing cache is valid: 35 fonts, 0 dirs
/usr/local/share/fonts: skipping, existing cache is valid: 0 fonts, 0 dirs
/usr/share/fonts/X11: skipping, looped directory detected
/usr/share/fonts/cMap: skipping, looped directory detected
/usr/share/fonts/cmap: skipping, looped directory detected
/usr/share/fonts/opentype: skipping, looped directory detected
/usr/share/fonts/truetype: skipping, looped directory detected
/usr/share/fonts/type1: skipping, looped directory detected
/usr/share/fonts/X11/Type1: skipping, looped directory detected
/usr/share/fonts/X11/encodings: skipping, looped directory detected
/usr/share/fonts/X11/misc: skipping, looped directory detected
/usr/share/fonts/X11/util: skipping, looped directory detected
/usr/share/fonts/cmap/adobe-cns1: skipping, looped directory detected
/usr/share/fonts/cmap/adobe-gb1: skipping, looped directory detected
/usr/share/fonts/cmap/adobe-japan1: skipping, looped directory detected
/usr/share/fonts/cmap/adobe-japan2: skipping, looped directory detected
/usr/share/fonts/cmap/adobe-korea1: skipping, looped directory detected
/usr/share/fonts/opentype/noto: skipping, looped directory detected
/usr/share/fonts/opentype/urw-base35: skipping, looped directory detected
/usr/share/fonts/truetype/arphic: skipping, looped directory detected
/usr/share/fonts/truetype/dejavu: skipping, looped directory detected
/usr/share/fonts/truetype/droid: skipping, looped directory detected
/usr/share/fonts/truetype/liberation: skipping, looped directory detected
/usr/share/fonts/truetype/noto: skipping, looped directory detected
/usr/share/fonts/truetype/ubuntu: skipping, looped directory detected
/usr/share/fonts/type1/urw-base35: skipping, looped directory detected
/usr/share/fonts/X11/encodings/large: skipping, looped directory detected
/var/cache/fontconfig: cleaning cache directory
fc-cache: succeeded
donovon@donovon-TM1613:~$ ls -a /var/cache/fontconfig/*
/var/cache/fontconfig/089dead882dea3570ffc31a9898cfb69-le64.cache-9 /var/cache/fontconfig/7ef2298fde41cc6eeb7af42e48b7d293-le64.cache-9
/var/cache/fontconfig/0bd3dc0958fa2205aaaa8ebb13e2872b-le64.cache-9 /var/cache/fontconfig/95530828ff6c81d309f8258d8d02a23e-le64.cache-9
/var/cache/fontconfig/188ac73a183f12857f63bb60a4a6d603-le64.cache-9 /var/cache/fontconfig/9b89f8e3dae116d678bbf48e5f21f69b-le64.cache-9
/var/cache/fontconfig/2300eef321c393bfd76478a5c0e95b23-le64.cache-9 /var/cache/fontconfig/a4e60e8d1e10d2fdff3fe3037a1845fb-le64.cache-9
/var/cache/fontconfig/3047814df9a2f067bd2d96a2b9c36e5a-le64.cache-9 /var/cache/fontconfig/c855463f699352c367813e37f3f70ea7-le64.cache-9
/var/cache/fontconfig/32b6488e5b8292a2e95c79d947e009e8-le64.cache-9 /var/cache/fontconfig/cabbd14511b9e8a55e92af97fb3a0461-le64.cache-9
/var/cache/fontconfig/3830d5c3ddfd5cd38a049b759396e72e-le64.cache-9 /var/cache/fontconfig/CACHEDIR.TAG
/var/cache/fontconfig/3f7329c5293ffd510edef78f73874cfd-le64.cache-9 /var/cache/fontconfig/d3e5c4ee2ceb1fc347f91d4cefc53bc0-le64.cache-9
/var/cache/fontconfig/4c599c202bc5c08e2d34565a40eac3b2-le64.cache-9 /var/cache/fontconfig/d589a48862398ed80a3d6066f4f56f4c-le64.cache-9
/var/cache/fontconfig/573ec803664ed168555e0e8b6d0f0c7f-le64.cache-9 /var/cache/fontconfig/d82eb4fd963d448e2fcb7d7b793b5df3-le64.cache-9
/var/cache/fontconfig/57e423e26b20ab21d0f2f29c145174c3-le64.cache-9 /var/cache/fontconfig/e13b20fdb08344e0e664864cc2ede53d-le64.cache-9
/var/cache/fontconfig/6333f38776742d18e214673cd2c24e34-le64.cache-9 /var/cache/fontconfig/e52a45a1c8c8fe895fc0fc8c4e6999b8-le64.cache-9
/var/cache/fontconfig/6cc790b63b123a6a96ee260fcdad32a9-le64.cache-9 /var/cache/fontconfig/f1f2465696798768e9653f19e17ccdc8-le64.cache-9
/var/cache/fontconfig/707971e003b4ae6c8121c3a920e507f5-le64.cache-9 /var/cache/fontconfig/fe547fea3a41b43a38975d292a2b19c7-le64.cache-9
donovon@donovon-TM1613:~$ vlc
VLC media player 3.0.20 Vetinari (revision 3.0.20-1-g2617de71b6)
[00005a1c56fad2d0] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
Qt: Session management error: Could not open network socket
[00005a1c5704ef50] main playlist: playlist is empty
Non-native QFileDialog supports only local files
Non-native QFileDialog supports only local files
Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
[h264 @ 0x7d4f5e0328c0] get_buffer() failed
[h264 @ 0x7d4f5e0328c0] thread_get_buffer() failed
[h264 @ 0x7d4f5e0328c0] decode_slice_header error
[h264 @ 0x7d4f5e0328c0] no frame!
QObject::~QObject: Timers cannot be stopped from another thread
donovon@donovon-TM1613:~$ Another terminal was necessary:
bash
donovon@donovon-TM1613:~/Documents$ cd ~
donovon@donovon-TM1613:~$ pwd
/home/donovon
donovon@donovon-TM1613:~$ sudo ls /var/cache/fontconfig/*
[sudo] password for donovon:
/var/cache/fontconfig/089dead882dea3570ffc31a9898cfb69-le64.cache-9
/var/cache/fontconfig/0bd3dc0958fa2205aaaa8ebb13e2872b-le64.cache-9
/var/cache/fontconfig/188ac73a183f12857f63bb60a4a6d603-le64.cache-9
/var/cache/fontconfig/2300eef321c393bfd76478a5c0e95b23-le64.cache-9
/var/cache/fontconfig/3047814df9a2f067bd2d96a2b9c36e5a-le64.cache-9
/var/cache/fontconfig/32b6488e5b8292a2e95c79d947e009e8-le64.cache-9
/var/cache/fontconfig/3830d5c3ddfd5cd38a049b759396e72e-le64.cache-9
/var/cache/fontconfig/3f7329c5293ffd510edef78f73874cfd-le64.cache-9
/var/cache/fontconfig/4c599c202bc5c08e2d34565a40eac3b2-le64.cache-9
/var/cache/fontconfig/573ec803664ed168555e0e8b6d0f0c7f-le64.cache-9
/var/cache/fontconfig/57e423e26b20ab21d0f2f29c145174c3-le64.cache-9
/var/cache/fontconfig/6333f38776742d18e214673cd2c24e34-le64.cache-9
/var/cache/fontconfig/6cc790b63b123a6a96ee260fcdad32a9-le64.cache-9
/var/cache/fontconfig/707971e003b4ae6c8121c3a920e507f5-le64.cache-9
/var/cache/fontconfig/7ef2298fde41cc6eeb7af42e48b7d293-le64.cache-9
/var/cache/fontconfig/95530828ff6c81d309f8258d8d02a23e-le64.cache-9
/var/cache/fontconfig/9b89f8e3dae116d678bbf48e5f21f69b-le64.cache-9
/var/cache/fontconfig/a4e60e8d1e10d2fdff3fe3037a1845fb-le64.cache-9
/var/cache/fontconfig/c855463f699352c367813e37f3f70ea7-le64.cache-9
/var/cache/fontconfig/cabbd14511b9e8a55e92af97fb3a0461-le64.cache-9
/var/cache/fontconfig/CACHEDIR.TAG
/var/cache/fontconfig/d3e5c4ee2ceb1fc347f91d4cefc53bc0-le64.cache-9
/var/cache/fontconfig/d589a48862398ed80a3d6066f4f56f4c-le64.cache-9
/var/cache/fontconfig/d82eb4fd963d448e2fcb7d7b793b5df3-le64.cache-9
/var/cache/fontconfig/e13b20fdb08344e0e664864cc2ede53d-le64.cache-9
/var/cache/fontconfig/e52a45a1c8c8fe895fc0fc8c4e6999b8-le64.cache-9
/var/cache/fontconfig/f1f2465696798768e9653f19e17ccdc8-le64.cache-9
/var/cache/fontconfig/fe547fea3a41b43a38975d292a2b19c7-le64.cache-9
donovon@donovon-TM1613:~$ ls -a
. Desktop Music snap
.. .dev-sidecar .pam_environment .ssh
.bash_history Documents Pictures .sudo_as_admin_successful
.bash_logout Downloads .pki .sys1og.conf
.bashrc .lesshst .profile Templates
.cache .local Public Videos
.config mount .python_history .xwechat
donovon@donovon-TM1613:~$ cd .cache
donovon@donovon-TM1613:~/.cache$ ls
event-sound-cache.tdb.103472120b73402888eed2e23862427c.x86_64-pc-linux-gnu
evolution
fontconfig
gnome-calculator
gnome-desktop-thumbnailer
gstreamer-1.0
ibus
ibus-table
mesa_shader_cache
mesa_shader_cache_db
obexd
profiles
thumbnails
tracker3
ubuntu-report
update-manager-core
yelp
donovon@donovon-TM1613:~/.cache$ cd fontconfig
donovon@donovon-TM1613:~/.cache/fontconfig$ ls
089dead882dea3570ffc31a9898cfb69-le64.cache-7
089dead882dea3570ffc31a9898cfb69-le64.cache-9
0bd3dc0958fa2205aaaa8ebb13e2872b-le64.cache-7
188ac73a183f12857f63bb60a4a6d603-le64.cache-7
2300eef321c393bfd76478a5c0e95b23-le64.cache-7
3047814df9a2f067bd2d96a2b9c36e5a-le64.cache-7
32b6488e5b8292a2e95c79d947e009e8-le64.cache-7
3830d5c3ddfd5cd38a049b759396e72e-le64.cache-7
3f7329c5293ffd510edef78f73874cfd-le64.cache-7
4c599c202bc5c08e2d34565a40eac3b2-le64.cache-7
573ec803664ed168555e0e8b6d0f0c7f-le64.cache-7
57e423e26b20ab21d0f2f29c145174c3-le64.cache-7
6333f38776742d18e214673cd2c24e34-le64.cache-7
6cc790b63b123a6a96ee260fcdad32a9-le64.cache-7
707971e003b4ae6c8121c3a920e507f5-le64.cache-7
7ef2298fde41cc6eeb7af42e48b7d293-le64.cache-7
7ef2298fde41cc6eeb7af42e48b7d293-le64.cache-9
95530828ff6c81d309f8258d8d02a23e-le64.cache-7
9b89f8e3dae116d678bbf48e5f21f69b-le64.cache-7
9b89f8e3dae116d678bbf48e5f21f69b-le64.cache-9
a4e60e8d1e10d2fdff3fe3037a1845fb-le64.cache-7
c855463f699352c367813e37f3f70ea7-le64.cache-7
cabbd14511b9e8a55e92af97fb3a0461-le64.cache-7
CACHEDIR.TAG
d3e5c4ee2ceb1fc347f91d4cefc53bc0-le64.cache-7
d589a48862398ed80a3d6066f4f56f4c-le64.cache-7
d82eb4fd963d448e2fcb7d7b793b5df3-le64.cache-7
e13b20fdb08344e0e664864cc2ede53d-le64.cache-7
e52a45a1c8c8fe895fc0fc8c4e6999b8-le64.cache-7
f1f2465696798768e9653f19e17ccdc8-le64.cache-7
fe547fea3a41b43a38975d292a2b19c7-le64.cache-7
donovon@donovon-TM1613:~/.cache/fontconfig$ Successfully!
It seems that the fault was only a font config issue.
Quick Summary
- APT: Traditional Ubuntu packages - fast, integrated, but can have dependency conflicts
- Snap: Containerized packages - secure, self-contained, but slower startup and larger size
At the end, maybe the traditional apt command is more suitable.