Change zathuras display mode to single page only

Sure enough. This appears to be a bug in xpdf.

You can switch to "width" view easily by tapping w as soon as xpdf opens, but there does not seem to be a way to make it behave from the command line. The only thing I could think of would be to hack it using expect or some sort of keyboard event routing to the X window to send it that keystroke when it starts up.

Having Referred to the following post: https://ubuntuforums.org/showthread.php?t=1975881

After many research, in the end I found my problem was the permission of the folder /var/tmp/, it was 755 (drwxr-xr-x, root, root).

After changing it to 777 (drwxrwxrwx), cups-pdf works again ..

Because in the /etc/cups/cups-pdf.conf, it is indicating either /var/tmp or /tmp must be user-writable!