我安装了 Ubuntu 21.10，并从 gnome 桌面更改为 mate 桌面。现在我在 /var/logs/syslog 中收到以下类型的消息。我该如何摆脱它们？
Jan 10 15:34:40 media rtkit-daemon[1738]: Supervising 7 threads of 4 processes of 1 users.
Jan 10 15:34:40 media rtkit-daemon[1738]: message repeated 2 times: [ Supervising 7 threads of 4 processes of 1 users.]
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig warning: "/etc/fonts/conf.d/10-hinting-slight.conf", line 4: unknown element "its:rules"
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig warning: "/etc/fonts/conf.d/10-hinting-slight.conf", line 5: unknown element "its:translateRule"
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/10-hinting-slight.conf", line 5: invalid attribute 'translate'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/10-hinting-slight.conf", line 5: invalid attribute 'selector'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/10-hinting-slight.conf", line 6: invalid attribute 'xmlns:its'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/10-hinting-slight.conf", line 6: invalid attribute 'version'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig warning: "/etc/fonts/conf.d/10-hinting-slight.conf", line 8: unknown element "description"
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 4: unknown element "its:rules"
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 5: unknown element "its:translateRule"
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 5: invalid attribute 'translate'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 5: invalid attribute 'selector'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 6: invalid attribute 'xmlns:its'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 6: invalid attribute 'version'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 8: unknown element "description"
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig warning: "/etc/fonts/conf.d/11-lcdfilter-default.conf", line 4: unknown element "its:rules"
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig warning: "/etc/fonts/conf.d/11-lcdfilter-default.conf", line 5: unknown element "its:translateRule"
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/11-lcdfilter-default.conf", line 5: invalid attribute 'translate'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/11-lcdfilter-default.conf", line 5: invalid attribute 'selector'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/11-lcdfilter-default.conf", line 6: invalid attribute 'xmlns:its'
Jan 10 15:34:40 media skypeforlinux.desktop[3874]: Fontconfig error: "/etc/fonts/conf.d/11-lcdfilter-default.conf", line 6: invalid attribute 'version'
我的 /etc/fonts/conf.d/60-generic.conf 看起来像这样（我没有手动更改）：
1 <?xml version="1.0"?>
2 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
3 <fontconfig>
4 <its:rules xmlns:its="http://www.w3.org/2005/11/its" version="1.0">
5 <its:translateRule translate="no" selector="/fontconfig/*[not(self::description)]"/>
6 </its:rules>
7
8 <description>Set preferable fonts for emoji/math fonts</description>
9 <!-- Keep in sync with 45-generic.conf -->
10
11 <!-- Emoji -->
12
13 <!-- Prefer to match color emoji font. -->
14 <match>
15 <test name="lang">
16 <string>und-zsye</string>
17 </test>
18 <test qual="all" name="color" compare="not_eq">
19 <bool>true</bool>
20 </test>
21 <test qual="all" name="color" compare="not_eq">
22 <bool>false</bool>
23 </test>
24 <edit name="color" mode="append">
25 <bool>true</bool>
26 </edit>
27 </match>
28
29 <!-- TODO
30 ! Match on "color" and alias B&W ones first if no color is requested.
31 ! That's "hard" because <alias> doesn't work in match and needs to be
32 ! expanded to its non-sugar form.
33 !-->
34 <alias binding="same">
35 <family>emoji</family>
36 <prefer>
37 <!-- System fonts -->
38 <family>Noto Color Emoji</family> <!-- Google -->
39 <family>Apple Color Emoji</family> <!-- Apple -->
40 <family>Segoe UI Emoji</family> <!-- Microsoft -->
41 <family>Twitter Color Emoji</family> <!-- Twitter -->
42 <family>EmojiOne Mozilla</family> <!-- Mozilla -->
43 <!-- Third-Party fonts -->
44 <family>Emoji Two</family>
45 <family>Emoji One</family>
46 <!-- Non-color -->
47 <family>Noto Emoji</family> <!-- Google -->
48 <family>Android Emoji</family> <!-- Google -->
49 </prefer>
50 </alias>
51
52 <!-- Math -->
53 <alias binding="same">
54 <!-- https://en.wikipedia.org/wiki/Category:Mathematical_OpenType_typefaces -->
55 <family>math</family>
56 <prefer>
57 <family>XITS Math</family> <!-- Khaled Hosny -->
58 <family>STIX Two Math</family> <!-- AMS -->
59 <family>Cambria Math</family> <!-- Microsoft -->
60 <family>Latin Modern Math</family> <!-- TeX -->
61 <family>Minion Math</family> <!-- Adobe -->
62 <family>Lucida Math</family> <!-- Adobe -->
63 <family>Asana Math</family>
64 </prefer>
65 </alias>
66
67 </fontconfig>