Chelsio t520-so-cr on A2SDi-4C-HLN4F
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?
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!