Troubleshoot NIC problems with CentOS 6.6 installation

And the message appears

Nov 20:34:12 St kernel:e1000e 0000:07:00.0:eth0:timesync Tx Control register not set as expected

Network card information

# ethtool-i Eth0
driver:e1000e
Version:2.3.2-k
firmware-version:1.9-0
bus-info:0000:07:00.0
Supports-statistics:yes
Supports-test:yes
Supports-eeprom-access:yes
Supports-register-dump:yes
Supports-priv-flags:no

# Ethtool Eth0
Settings for eth0:
Supported ports: [TP]
Supported Link Modes:10baset/half 10baset/full
100baset/half 100baset/full
1000baset/full
Supported Pause Frame Use:no
Supports Auto-negotiation:yes
Advertised Link Modes:10baset/half 10baset/full
100baset/half 100baset/full
1000baset/full
Advertised Pause frame Use:no
Advertised Auto-negotiation:yes
speed:1000mb/s
Duplex:full
Port:twisted Pair
Phyad:1
Transceiver:internal
Auto-negotiation:on
Mdi-x: On (auto)
Supports WAKE-ON:PUMBG
Wake-on:g
Current Message level:0x00000007 (7)
DRV probe link
Link Detected:yes
The solution is to join Pcie_aspm=off in/boot/grub/grub.conf?

kernel/vmlinuz-xxxxxxxxxxxxxxxxxx ro root=xxxxxxxxxxxx Pcie_aspm=off