problem adding cups print queue to debian live starting with buster

[Drew Arnett <arnett.drew@gmail.com>]

Hi,

Starting with buster, I haven't been able to setup a printer in cups.
I've tried the 10.0.0 and the 10.1.0 versions of the amd64 xfce live
image.  9.x xfce images worked OK, so something has changed.

apt-get updateapt-get install cups
/etc/init.d/cups start

To admin in cups, I use the menu 'applications' -> 'settings' ->
'print settings' to start a cups client.  Add print queue throws a
prompt for credentials.  Adding user to lpadmin resolved that.  But,
now, when click on add printer, I get an error dialog that says "CUPS
server error" and "There was an error during the CUPS operation:
'Internal Server Error'." with a 'cancel' or 'retry'.

My apologies for not being familiar enough with either cups internals
nor some of the details regarding the live images and the buster
flavors of those.

If more info would be helpful, let me know what to provide.  If I
should try a different live image, I can do that too.  (gnome?  32 bit
x86?)  If the answer is, the live image doesn't support that, it would
be good to know.

I turned on 'debug' level of debugging and started cups.  grep "^E"
error_log produces:
E [18/Oct/2019:03:34:00 +0000] Unable to open
\"/usr/share/cups/mime\": Permission denied
E [18/Oct/2019:03:34:00 +0000] Unable to open \"/etc/cups\": Permission denied
E [18/Oct/2019:03:34:00 +0000] Unable to open
\"/usr/share/cups/mime\": Permission denied
E [18/Oct/2019:03:34:00 +0000] Unable to open \"/etc/cups\": Permission denied
E [18/Oct/2019:03:34:00 +0000] cupsdLoadBanners: Unable to open banner
directory "/usr/share/cups/banners": Permission denied
E [18/Oct/2019:03:34:00 +0000] Unable to open spool directory
"/var/spool/cups": Permission denied
E [18/Oct/2019:03:34:00 +0000] Unable to open directory
"/var/spool/cups/tmp" - Permission denied
E [18/Oct/2019:03:34:00 +0000] Unable to open directory
"/var/cache/cups" - Permission denied

Thanks and best regards,

Drew