Note that even the latest dmidecode CVS doesn't remedy the problem with the missing PCI-E slot information, and to make matters more interesting, as of two weeks ago, dmidecode is without an upstream maintainer...
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.