On 4/10/21 00:28, David Mehler wrote:
I'm looking for a cups expert.
I'm definitely not a CUPS expert. I've had to work with its debug logs a few times to resolve problems though. Increasing the log level may help. Also, if it's an older kind of printer, you need to specify a Postscript Printer Description (PPD) file. Newer printers, though, shouldn't require configuration - see this article: https://lwn.net/Articles/857502/ Regrettably, I don't have insight into your specific connection issues. For a network-based printer, make sure there isn't a firewall running on your host (e.g., iptables/nftables rules) that blocks the required port. This turned out to be the problem when I last had to debug a CUPS installation - easily fixed by opening the port, obviously. For the USB-based printer, I would start with the kernel logs to check that it's detected properly, then move on to the CUPS logs.