A quick test on the kernel in comment #14: Mellanox CX3 VF device is not showing up when booting up with this test kernel: 4.4.0-64-generic. Looks like this is a regression from 4.4.0-63-generic. In 4.4.0-63-generic, the VF presented correctly.
1. Boot with this test kernel: 4.4.0-64-generic; then VF is not listed in lspci: root@ubuntu1604-client:~# uname -r 4.4.0-64-generic root@ubuntu1604-client:~# lspci 00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (AGP disabled) (rev 03) 00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 01) 00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) 00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02) 00:08.0 VGA compatible controller: Microsoft Corporation Hyper-V virtual VGA 00:0a.0 Ethernet controller: Digital Equipment Corporation DECchip 21140 [FasterNet] (rev 20) 2. Then boot the same VM with same configuration on: 4.4.0-63-generic, VF shows up. root@ubuntu1604-client:~# uname -r 4.4.0-63-generic root@ubuntu1604-client:~# lspci 0000:00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (AGP disabled) (rev 03) 0000:00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 01) 0000:00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) 0000:00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02) 0000:00:08.0 VGA compatible controller: Microsoft Corporation Hyper-V virtual VGA 0000:00:0a.0 Ethernet controller: Digital Equipment Corporation DECchip 21140 [FasterNet] (rev 20) 99b2:00:02.0 Ethernet controller: Mellanox Technologies MT27500/MT27520 Family [ConnectX-3/ConnectX-3 Pro Virtual Function] <=== this is the VF device -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1650058 Title: [Hyper-V/Azure] Please include Mellanox OFED drivers in Azure kernel and image To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1650058/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
