jmhogge
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broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

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Hello,

I'm very pleased with my Alienware Aurora ALX purchase, and happy to be a part of this community.  However, I do have this issue:

The Ethernet adapter won't connect at 1Gbps; here is what I've tried so far:

1) Confirmed that my router is capable of supporting Gigabit Ethernet.  I've got two other devices connected at this speed (an older PC and a NAS).

2) When I set the speed and duplex of the adapter to auto negotiate, it will only connect at 10mbps

3) I notice there is no setting for 1000Mbs in the speed and duplex options.

4) I tried 100Mb full duplex, it will connect but my Internet connection slows to less than 1Mbps (I'm on a 15Mbps connection, and testing the other PC it was able to achieve around 14Mbps).

5) I then tried 100Mb half duplex, this will also connect and my overall network performance is good.

6) I confirmed that I have the current driver from Dell. I've had the computer for 3 days (using windows 7 by the way).

7) I tried all the ports on my router and confirmed that the router side was also set to auto negotiate and not trying to force a specific speed.

I'm hoping that someone has a solution or suggestion to fix this.

 

Kind Regards,

Jason

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AZIceman54
1 Copper

Re: broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

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**SOLUTION**  thanks in part to the previous post.

Here's the Giga speed solution that worked for my new Dell Studio 1458.  I read a lot about the slow xfer speeds using the Broadcom NetLink LAN connection.

There were two items I initially did not believe, but were in fact true.

1) You must use a CAT 6 line on ALL of your gigabit capable machines.  I though a good Cat5e line would support giga speeds.  It doesn't.

Apparently, the Dell NetLink card does some initial negotiation with your router (kinda' like a fax machine), then after seeing all your connections,

it will drop the xfer speed down to the lowest common component (i.e. the Cat5e cable).  And;

2) The NetLink card will only give you giga speeds in the auto selection (advanced ethernet properties, speed & duplex).  The speed and duplex window will never

show 1000Mb!  You can verify whether your connection is10/100/1000 by double clicking your Local Area Connection icon.

I verified the speeds of my giga connection via a test utility and by transferring a 200meg file.  The results indicated a speed increase from 12MB/sec to 26MB/sec.

These numbers don't show a factor of ten increase in speeds we would all like to have (too bad), but they are in-line with other people's reported transfer speeds.

 

Hope this helps!

10 Replies
cskenney
1 Copper

Re: broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

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I am really curious if anyone has an answer to you.  I bought an Inspiron 580 desktop and I have the EXACT same problem.

Network adapter says it is a Broadcom Netlink Gigabit Ethernet device.  I loaded the latest driver, but under the Advanced Settings for Speed and duplex, there is no setting for 1000 MB.

I tried using the Dell support Chat today only to be thoroughly disappointed.  They remote connected to my PC to verify the latest driver was installed and then said I could call a pay for support number to continue trouble shooting it.  The PC is new.  This is a problem from the manufacturer.  Why would I pay to fix something that was broke from the beginning?

I hope someone has a suggestion to fix this.

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cskenney
1 Copper

Re: broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

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As a follow up to my earlier reply, I have determined that you can not force a Broadcom device to 1000MB.  It will only connect at this speed using the Auto setting.  This doesn't solve your problem but does explain why you can't find 1000MB speed as a forced setting.

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jmhogge
1 Nickel

Re: broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

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I actually resolved this issue just by trying a different network cable - couldn't tell you whether it was cat5 or cat6 though. Maybe something to try if you haven't. It connects now at 1Gbps. Good Luck!
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AZIceman54
1 Copper

Re: broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

Jump to solution

**SOLUTION**  thanks in part to the previous post.

Here's the Giga speed solution that worked for my new Dell Studio 1458.  I read a lot about the slow xfer speeds using the Broadcom NetLink LAN connection.

There were two items I initially did not believe, but were in fact true.

1) You must use a CAT 6 line on ALL of your gigabit capable machines.  I though a good Cat5e line would support giga speeds.  It doesn't.

Apparently, the Dell NetLink card does some initial negotiation with your router (kinda' like a fax machine), then after seeing all your connections,

it will drop the xfer speed down to the lowest common component (i.e. the Cat5e cable).  And;

2) The NetLink card will only give you giga speeds in the auto selection (advanced ethernet properties, speed & duplex).  The speed and duplex window will never

show 1000Mb!  You can verify whether your connection is10/100/1000 by double clicking your Local Area Connection icon.

I verified the speeds of my giga connection via a test utility and by transferring a 200meg file.  The results indicated a speed increase from 12MB/sec to 26MB/sec.

These numbers don't show a factor of ten increase in speeds we would all like to have (too bad), but they are in-line with other people's reported transfer speeds.

 

Hope this helps!

jurrabi1
1 Nickel

RE: broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

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Just to add up. After detecting the same speed issue in my Alienware Aurora I went to try and find why it wouldn't connect 1gbps (like in the past I know it did).

It is, like previous people said, a matter of cable. But since I didn't have any cat6 at home I tested all I have and I finally got is to 1gbps with one new cat5E cable.

So the afirmation that cat5E can't do 1gbps is not true. maybe a good 5e can work for you to, but any way I also suggest using cat6 to be sure...

PS. The 20MB/s you get I'm sure it's because of HD being the bottleneck. Try transfers from/to fast disk like SATA RAIDs or Solid state. Cheers.

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NemecekCole
1 Copper

RE: broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

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You DO NOT need to use Cat6 for gigabit traffic period.  A good Cat5e cable is sufficient and was used for a long time with gigabit before Cat6 came around.  I've even seen gigabit work over short runs of Cat5.

The real problem appears to be the Broadcom Power Management service, so if you disable that and reboot you will be running at 1Gb/s speeds.

David

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redfishi
1 Copper

RE: broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

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just wanted to say that i had this exact same problem.

here's my setup:

WAN -> 10/100 ROUTER -> 10/100/1000 SWITCH -> MAIN PC / NODE 1 / NODE 2 / NODE 3 / NODE 4.

I use the nodes for my render farm.

Turns out that all I needed to do was put a CAT 6 cable from the main pc to the switch, and all the other cables can be cat 5e.

You *do* need a cat 6 cable going out of the master pc if you want to get a gigabit net that is auto negotiated by the intel or realtek interface on the motherboard, or it won't work.

+1 for cat 6!

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OldSocrates
1 Copper

RE: broadcom gigabit netlink adapter won't connect at 1Gbps, auto negotiate connects at 10Mbps

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I have just switched a cat5 cable for a cat5E cable and the adapter has now successfully negotiated 1Gb speed. I guess that there are a number of factors -

a) length of cable, approx 10m in my situation. Longer distance will involve greater signal loss and that may push you to using a Cat6 cable.

b) ability/quality of the hardware at each end of the cable. I'm going from the Broadcom gigabit adapter in my PC to a Netgear prosafe Gbit switch. I could have plugged into my router which also has a Gb switch built in and perhaps got a different result.

I tried turning off the power management on the broadcom adapter and it made no difference. I'm running Windows 10 on an HP system so again you may have different results on a Dell box with different drivers perhaps.

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kewe65
1 Copper

RE: broadcom gigabit netlink adapter won't connect at 1Gbps,

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My LAN status shows 1.0 Gbps speed.  I have a PC connected with a 35 ft Cat 6 cable to a new gigabit cable modem.  Here's the kicker - when I plug the same cable into a new workstation laptop the internet speed test shows ~985mbs.  But through the PC, again same cable, the PC only gets ~300mps.

I don't trust the speed on the LAN properties to be accurate....

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