!pdfTeX 错误：pdflatex (文件 ./2_usr_share_lyx_images_buffer-view.pdf)：读取图像文件失败

Question

我是 latex 和 lyx 的完全初学者，为了学习，我使用以下命令在 kubuntu 中安装了 texlive 和 lyx：

sudo apt-get install lyx texlive-plain-generic ispell ispanish texlive-full texlive-latex-base texlive-latex-recommended texlive-fonts-extra texlive-lang-spanish texlive-bibtex-extra texlive-pictures preview-latex-style texlive-publishers texlive-fonts-recommended texlive-latex-extra lilypond lilypond-data lilypond-doc lilypond-doc-html-es lmodern && lyx -x reconfigure 

我开始阅读教程，但是当我尝试编译 lyx 教程时，出现以下错误：

!pdfTeX error: pdflatex (file ./2_usr_share_lyx_images_buffer-view.pdf): reading image file failed
==> Fatal error occurred, no output PDF file produced!

我搜索了一下，然后在这里发现了一篇非常古老的帖子： https://tex-live.tug.narkive.com/XxEKIHVH/ including-pdf-images-fails-while-running-pdflatex 但它适用于 Windows，而我需要在 Ubuntu 系统上的解决方案。

当我编译其他没有 pdf 图像文件的教程时，它可以工作，但如果该教程有 pdf 图像文件，它就会崩溃。

完整的 lyx 报告如下：

This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020/Debian) (preloaded format=pdflatex 2021.5.2)  3 MAY 2021 09:48
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
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\c@figure=\count184
\c@table=\count185
\abovecaptionskip=\skip47
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\bibindent=\dimen138
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Package: helvet 2020/03/25 PSNFSS-v9.3 (WaS) 
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Package: fontenc 2020/08/10 v2.0s Standard LaTeX package
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LaTeX Font linux

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{/var/lib/texmf/fonts/map/pdftex/updmap/pdftex.map}] [2

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Cap\'{\i }tulo 1.

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Cap\'{\i }tulo 2.
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\T1/ppl/m/n/12 rien-do que co-rri-jas las par-tes co-rres-pon-dien-tes del ar-c
hi-vo \T1/pcr/m/n/12 ejemplo_sin_lyx.lyx\T1/ppl/m/n/12 .
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[7

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!pdfTeX error: pdflatex (file ./2_usr_share_lyx_images_buffer-view.pdf): reading image file failed
 ==> Fatal error occurred, no output PDF file produced!

我非常感谢在这方面提供的任何帮助！！

2021/07/26 编辑：

我正在使用 Ubuntu 21.04：

pc@user-X555LN:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 21.04
Release:        21.04
Codename:       hirsute

Lyx版本是2.3.6：

Versión LyX 2.3.6
(viernes, 27 de noviembre de 2020)
Directorio de bibliotecas: /usr/share/lyx/
Directorio del usuario: ~/.lyx/
Versión QT (en ejecución): 5.15.2
Versión QT (en compilación): 5.15.2

介绍编译得很好，只有当我嵌入 svgz 文件时才会出现问题。

我创建了一个新文件，并插入一个 SVGZ 图像文件，同样的问题......

Answer 1

问题出在 Inkscape 上，Lyx 编译 PDF 时不会自动集成旧的 svgz 文件。要解决这个问题，只需将文件转换为新标准即可，我通过在教程文件夹中运行两个命令行解决了这个问题：

sudo inkscape --convert-dpi-method="scale-viewbox" --export-type=svg *.svgz
sudo gzip -S z --force *.svg

必须使用 sudo，因为教程图片所在的文件夹是：/usr/share/lyx/images/