Dear All, I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv : 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) It is detected, but why the speed is always 100Mbps, already change cable but still no luck. I use ethtool and from the output it seems that system know that this NIC support gigabit speed : ??????? Supported link modes:?? 10baseT/Half 10baseT/Full ??????????????????????????????? 100baseT/Half 100baseT/Full ??????????????????????????????? 1000baseT/Full ??????? Supports auto-negotiation: Yes ??????? Advertised link modes:? 10baseT/Half 10baseT/Full ??????????????????????????????? 100baseT/Half 100baseT/Full ??????????????????????????????? 1000baseT/Full have change the driver r8169 with r8168 and follow the guide on CentOS wiki http://wiki.centos.org/AdditionalResources/HardwareList/RealTekRTL8111b but still it only get 100Mbps speed. I user kernel 2.6.18-274.3.1.el5 and 2.6.18-274.3.1.el5-PAE. on another machine with the same specs I use kernel 2.6.18-238.9.1.el5 and the gigabit speed works. Any idea why this happened and how to solve it? Thank you. Regards, -- ----- Muhammad Panji http://www.panji.web.id? ? ? ? ? ? ? ? ? ? ? ?? http://www.kurungsiku.com http://sumodirjo.wordpress.com? ? ? ? ? http://www.kurungsiku.web.id http://www.linuxbox.web.id
On 9/27/11, Muhammad Panji <sumodirjo at gmail.com> wrote:> Dear All, > I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv : > > 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) > > It is detected, but why the speed is always 100Mbps, already change > cable but still no luck. I use ethtool and from the output it seems > that system know that this NIC support gigabit speed :What network switch is this connected to? Does it work if you disable auto-negotiation and force the link speed to 1Gbps?
On 09/27/2011 05:15 AM, Muhammad Panji wrote:> Dear All, > I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv : > > 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) > > It is detected, but why the speed is always 100Mbps, already change > cable but still no luck. I use ethtool and from the output it seems > that system know that this NIC support gigabit speed : > > > Supported link modes: 10baseT/Half 10baseT/Full > 100baseT/Half 100baseT/Full > 1000baseT/Full > Supports auto-negotiation: Yes > Advertised link modes: 10baseT/Half 10baseT/Full > 100baseT/Half 100baseT/Full > 1000baseT/Full > > have change the driver r8169 with r8168 and follow the guide on CentOS > wiki http://wiki.centos.org/AdditionalResources/HardwareList/RealTekRTL8111b > but still it only get 100Mbps speed. > > I user kernel 2.6.18-274.3.1.el5 and 2.6.18-274.3.1.el5-PAE. on > another machine with the same specs I use kernel 2.6.18-238.9.1.el5 > and the gigabit speed works. > > Any idea why this happened and how to solve it? Thank you. > Regards,If your system is using the r8169 driver for this device then you'll probably need a different driver to get it working? I've got this in my Fedora 15 system and I needed to manually install the r8168 driver to make things work. Check this out for the details: http://wiki.linuxmce.org/index.php/Realtek_8168 Regards, Dennis
From: Muhammad Panji <sumodirjo at gmail.com>> I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv : > 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) > It is detected, but why the speed is always 100Mbps, already change > cable but still no luck. I use ethtool and from the output it seems > that system know that this NIC support gigabit speed : > have change the driver r8169 with r8168 and follow the guide on CentOS > wiki http://wiki.centos.org/AdditionalResources/HardwareList/RealTekRTL8111b > but still it only get 100Mbps speed.Same controller here... and I always get downgraded to 100Mbps... I am using kmod-r8168-8.025.00-1 I have other PCs connected to the same switch and they are in 1000Mbps... # ethtool eth0 Settings for eth0: ??????? Supported ports: [ TP ] ??????? Supported link modes:?? 10baseT/Half 10baseT/Full ??????????????????????????????? 100baseT/Half 100baseT/Full ??????????????????????????????? 1000baseT/Full ??????? Supports auto-negotiation: Yes ??????? Advertised link modes:? 10baseT/Half 10baseT/Full ??????????????????????????????? 100baseT/Half 100baseT/Full ??????????????????????????????? 1000baseT/Full ??????? Advertised auto-negotiation: Yes ??????? Speed: 100Mb/s ??????? Duplex: Full ??????? Port: Twisted Pair ??????? PHYAD: 0 ??????? Transceiver: internal ??????? Auto-negotiation: on ??????? Supports Wake-on: pumbg ??????? Wake-on: g ??????? Current message level: 0x00000033 (51) ??????? Link detected: yes I tried: # ethtool -s eth0 speed 1000 duplex full autoneg off advertise 0x020 but auto-negotiation stays on and I only get 100Mbps... I tried: # ethtool -s eth0 duplex full autoneg off advertise 0x020 auto-negotiation is off but nothing change... JD