Gigabit Realtek card only detects as 10/100 [Solved PEBKAC]

xgregx · Last edited by xgregx on Mon Apr 27, 2009 6:57 pm; edited 1 time in total

Hey all, I could have sworn my Realtek NIC was running at 1000 mbps when I first setup this box, but now it only detects as being cable of 10/100 by ethtool.

The card is a pci-e built in to my mobo :
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)

It's on a Jetway Intel Atom mobo.

I'm using the r8169 driver as a module from the Device Drivers -> Networking -> 1000M section of the kernel config.

I have this same problem with it on 2.6.27 kernel (built into the kernel, not module) and a 2.6.29 kernel (module).

Here is what ethtool says:

ziggysquatch · Posted: Mon Apr 27, 2009 6:03 pm Post subject:

Are you able to turn off autonegotiation and set it to 1000 manually?

something like:

Nijinski · Posted: Mon Apr 27, 2009 6:12 pm Post subject:

If the lspci notes it as being "fast ethernet" then it'll only do 100M max.

Realtek website lists that part as 100M as well

http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=7&Level=5&Conn=4&ProdID=19
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xgregx · Posted: Mon Apr 27, 2009 6:56 pm Post subject:

Ah - what a fool I am. It is only 100 - Even the item desc on New Egg Says it's 100.

They must have mislabled it when I bought it, because I was always under the impression I had a 1Gb card, which is why I updated my network to 1Gb.

Oh well - thanks for pointing that out. I'll mark this one as solved - dumb user error, PEBKAC (problem exists between keyboard and chair)

Thanks for your help.
Greg
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