On Sat, Nov 10, 2018 at 02:14:58PM -0500, Paul A. Rubin wrote: > On 11/5/18 2:32 PM, Jeff Defoe wrote: > > I realized I was using the Lyx from the Ubuntu repository. When I > > removed it, added the PPA, and installed LyX from that -- it now seems > > to work. > > > > I do, however, have an odd problem where graphics often don't display in > > LyX, giving errors such as "error loading file into memory" or "error > > converting to loadable format" which I didn't get before upgrading to > > Ubuntu 18.04. > > > > Best regards, > > > > Jeff > > > > > One possibility has to do with Imagemagick. I recently opened an old LyX > file with some EPS graphics, and got the "error converting" message on all > of them. In Tools > Preferences... > File Handling > Converters, the > converter for EPS to PNG is correctly configured to use the Imagemagick > convert command. The catch is that recent versions of Imagemagick apparently > ship with seriously anal retentive permissions by default. If you run > "convert something.eps something.png" in a terminal, you get an error saying > something about not being allowed access. > > The fix is to open /etc/Imagemagick-6/policy.xml in an editor, using root > privileges, and comment out the line "<policy domain="coder" rights="none" > pattern="EPS" />". I also commented out the equivalent lines for PS, PDF and > XPS just to be safe. After that, LyX was able to display the EPS images.
I had to do something similar on Ubuntu 18.04 in order to convert PDF files. The following was helpful: https://stackoverflow.com/questions/42928765/convertnot-authorized-aaaa-erro Scott
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