Public bug reported:
The r8168-dkms driver installs but there is no network connectivity and
with ifconfig both RX and TX show 0 Bytes DHCP and Fixed.
kernel is 3.5.0-25-generic x86_64 x86_64 x86_64 GNU/Linux
MB is GA-990FXA-UD7
CPU AMD 1100T stock clock
RAM 8G
lspci for r8111/8168B
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI
Express Gigabit Ethernet controller (rev 06)
Subsystem: Giga-byte Technology GA-EP45-DS5/GA-EG45M-DS2H Motherboard
Flags: bus master, fast devsel, latency 0, IRQ 44
I/O ports at 9e00 [size=256]
Memory at fd7ff000 (64-bit, prefetchable) [size=4K]
Memory at fd7f8000 (64-bit, prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: r8168
Kernel modules: r8168, r8169
Disabling iommu in bios causes driver to work.
** Affects: r8168 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1132627
Title:
r8168-dkms driver fails to connect with iommu enabled on amd 1100T
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