Second LPT port - SOLVED!

Thanks for putting up these instructions. I followed them to add a second parallel port, and linuxcnc now doesn't give any warnings when I run the 2 port tester. The on board port works with the tester, but the second port outputs are all stuck at 5V, regardless of what I toggle. Do you know what could be the problem?

I tried the first address from lspci -vv  again, and it worked - I ignored the warning from dmesg and can now get the port working in output mode

In the future if you do need to use lspci, also use sudo in front as it also shows the loaded kernel modules , in your case it says access denied where the module name should be.