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https://bugs.launchpad.net/bugs/1883990
Title:
Intel i350-AM21 not detected on 5.4.X Kernel (Intel GbE driver bug)
Status in linux package in Ubuntu:
Incomplete
Bug description:
Hi all,
As mentioned on IRC, here is the problem:
2 x 1GbE LAN via Intel® i350-AM21 2 port GbE interface card is not
being picked up under Ubuntu either using kernel in-tree driver or
Intel provided driver on their website. These NIC(s) are used within
the Supermicro H11DSi board
(https://www.supermicro.com/en/products/motherboard/H11DSi) and
several other variants of their motherboard.
I tried two ways to fix this issue:
(1) Building the Intel provided driver is not possible right now on
newer kernels (see bug:
https://forums.intel.com/s/question/0D50P00004dfC66SAE/intel-350t4
-igb-driver-and-kernel-54-build-error?language=en_US). It is using old
headers and even with some corrections it fails to compile with some
detailed code corrections. Supermicro provides the exact same drivers
as found on the Intel website on a CD for RHEL/SuSE which also fails
to compile for the same reason.
(2) The kernel in-tree Intel driver fails to identify these Intel
interfaces as it appears the device ID is missing
(https://github.com/torvalds/linux/blob/6f0d349d922ba44e4348a17a78ea51b7135965b1/drivers/net/ethernet/intel/igb/e1000_hw.h):
In the header file we see the identifiers:
#define E1000_DEV_ID_I350_COPPER 0x1521
#define E1000_DEV_ID_I350_FIBER 0x1522
#define E1000_DEV_ID_I350_SERDES 0x1523
#define E1000_DEV_ID_I350_SGMII 0x1524
lspci shows us a missing identifier (0x151f):
01:00.0 Ethernet controller [0200]: Intel Corporation Device [8086:151f] (rev
01)
01:00.1 Ethernet controller [0200]: Intel Corporation Device [8086:151f] (rev
01)
It could be that a simple addition of the identifier in the kernel
fixes the issue, although issue (1) still exists and Intel needs to
re-build and test their code on the latest 5.X Kernel.
Happy to test if you have a suggested fix & thnx for the support
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