I have FINALLY discovered a work-around/solution for this situation. (after spending 3 days, wrongly debugging the megaraid_sas driver source code....)
Setting linux kernel boot parameter pci=conf1 allows my Intel RAID Controller-RMS25PB080 (LSI 2208/Fusion based) to be detected, and the FW to transition to Ready state. Without this setting the Card FW responds only with 0xF0000000 Fault (Masked). I found linux kernel series 3.0.0 (as used in Oneiric / 11.10), properly discovered and used the RAID card. Things broke in kernel series 3.2.0 (as used in Precise / 12.04), onward. So this also affects Quantal (12.10), and current Raring 13.04 kernel builds (v3.7+). So this means in my Intel s2600 system, using the Intel/LSI card I have confirmed broken PCI discovery in kernels 3.2 up to current day 3.7.1 kernels. Details: Card PCI ID: 1000:005b Card PCI description: LSI Logic / Symbios Logic MegaRAID SAS 2208 [Thunderbolt] (rev 03) aka Fusion Card Firmware Version: v23.9.0-0018 (most current to-date) Card OEM: Intel RAID Module (Card) RMS25PB080 SAS System Board: s2600CP - E5-2600 Xeon, LGA2011 Socket System Firmware BIOS level: 01.06.0002 2012/11/15 (most current to-date) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1091263 Title: Cannot install Ubuntu Server on Intel Raid System To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1091263/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
