Hardware Issues

[Bluefinllama]

I am having trouble with my uploading speeds and I'm unsure if it might be my onboard Ethernet that is giving the problems? When I use a wireless adapter the speeds seem to be fine, as soon as I go back to cable it just doesn't want to do anything. Would the most likely problem be the Modem / the Motherboard? I have installed the latest broadcom netlink drivers for my motherboard.

Have any of you perhaps come across a problem like this where the onboard ethernet doesn't want to upload, but is fine when downloading? I've experienced this problem before with the same motherboard and modem, but it seemed to have fixed itself after I formatted, but I used the same drivers / Windows etc. as before.

I am using Avast free antivirus, but I've turned off all the shields and it didn't make a difference, so doubt it could be this. For a while I had a problem where my monitor didn't pick up a signal from the graphics card at times (random times, there was no discernible pattern to the occurence) but it seems fine now (re-seated all the components including the graphics card).

I have an Asrock Z77 Extreme 4 and I'm using a TP-Link TD-W8960N. I did order a ZyXEL Z-P2812HNU-F1 VDSL modem since I am in an area where I can make use of VDSL, so I'll be able to test as soon as the modem arrives.

Any input / ideas would be welcome.

 

[Pada]

We've had issues at our office where our router's auto-negotiation of the speed and duplex malfunctioned, causing our upload speed to be reduced from like 10Mbps to only like 1Mbps. So now we're forcing it to full-duplex 100Mbps.

MTU (maximum transmission unit) and MSS (maximum segment size) settings can also have an impact, which could lead to unnecessary fragmentation, that can cause up to 3x slower speeds if wrongly configured. For LAN the MTU is by default set to 1500 and for the PPPoE connection it should be 1492 on the modem.
So you may have a slight benefit in speed if you change your MTU on your LAN interface to 1492 - but it would cause that you have slightly slower transfers over your LAN. Check out http://www.richard-slater.co.uk/arc...-your-mtu-under-vista-windows-7-or-windows-8/ for more info.

1) Do you have the same IP range as when you're using WiFi?
2) Have you tried a different cable?
3) What are you using to test the upload speed? www.speedtest.net?

 

[Rickster]

Is the Internet upload speed or PC to device upload speed?

What speed are you getting?

 

[Bluefinllama]

The MTU on the modem was set to 1480, I have gone and changed it to 1492. I have also set the MTU on my LAN interface to 1492, LAN transfer speed is not a concern, a functioning internet connection is however.

1) The IP range for WiFi and LAN is the same, but I have set it up so my LAN Mac address is linked to a statically leased IP.
2) I have tried a different cable, same results
3) I did use www.speedtest.net as a reference yes, I am not looking for accuracy so much as a semblance of an upload speed (my upload speed goes to about 0.07mbps atm, which according to me is non-existent, but this is only after I've changed the MTU as suggested, before it only managed to go up to about 0.04mbps)

 

[Bluefinllama]

A Ping to www.google.com seems to pick up packet loss (about 25%).
http://www.speedtest.net/my-result/3249197280

 

[Pada]

What happens if you ping your router? Do you also get packet loss?

If you do get packet loss to the router, and you've already tried a different port on the router and a different cable, then I would suspect that your LAN card is damaged or the router's LAN is damaged. Use a different PC to determine which one is at fault.

 

[sajunky]

What happens if you ping your router? Do you also get packet loss?

^try this. And also +1 to full duplex manual settings.

 

[Rickster]

Are you using Broadcom Lan driver ver:14.8.4.1?

 

[Bluefinllama]

Are you using Broadcom Lan driver ver:14.8.4.1?

Correct yes.

What happens if you ping your router? Do you also get packet loss?

If you do get packet loss to the router, and you've already tried a different port on the router and a different cable, then I would suspect that your LAN card is damaged or the router's LAN is damaged. Use a different PC to determine which one is at fault.

Seemed fine when I did this, but I've since changed the modem (the ZyXEL arrived today) and it seems I'm still having this problem. I've hooked up a laptop through ethernet with the same cable as the one used with the pc, the laptop's connection is fine which means it's not with the modem (quite unfortunate). I'll have to return the motherboard and suffer without a pc until this has been sorted out. I can't think of anything else it could be.