The OP has "redhat-bugs #652210" as the Red Hat bug but that is wrong. That one was closed with "Status: CLOSED NOTABUG "
This one is much more interesting: https://bugzilla.redhat.com/show_bug.cgi?id=523341 I think the story is: 1. BIOS doesn't know about SR-IOV Virtual Functions so it does not report it to the kernel 2. kernel sees the BIOS didn't report about the SR-IOV Virtual Functions so it disables the device. If you read through https://bugzilla.redhat.com/show_bug.cgi?id=523341 you will find Yinghai Lu yinghai@%! kernel.org was working on a patch that could automatically detect and correct this but it had issues and was removed (reverted) from upstream. Linus Torvalds suggested that Yinghai Lu use manual kernel options allow specifying information not provided by the BIOS http://marc.info/?l=linux-kernel&m=127846075028242&w=2 Ram Pai linuxram @%@~@ us.ibm.com submitted (signed off on) the kernel patches with the manual-overide Yinghai Lu http://marc.info/?l=linux-kernel&m=128392923724817&w=2 Bjorn Helgaas bjorn.helgaas@hp@ com vetoed (failed to integrate) the patch http://marc.info/?l=linux-kernel&m=128392923724817&w=2 Meanwhile RHEL 5.7 supposedly supports working SR-IOV VFs https://bugzilla.redhat.com/show_bug.cgi?id=523341 ** Bug watch added: Red Hat Bugzilla #523341 https://bugzilla.redhat.com/show_bug.cgi?id=523341 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/790201 Title: Cannot use SR-IOV feature of Intel 82576 network card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/790201/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
