Chelsio t520-so-cr on A2SDi-4C-HLN4F
posto587 last edited by
we are seeing problems with the T520 on Supermicro A2SDi-4C-HLN4F.
The card is detected in 1 of 4 bootups.
Bios updated on newest version.
Like the driver doesn't attach or it isn't reported by
Does it show in the BIOS at all in either situation?
posto587 last edited by posto587
Probably found the issue:
There is a bios setting which changes the PCIe from x2 to x4 (while disabling SATA ports).
Advanced >> Chipset Configuration >> South Bridge Configuration >>Flexible I/O Selection (default is [PCIe x 2/Mini SAS/SATA(1:0)])
Changing this to PCIe x4 seems to resolve the issue.
Ah, nice find!