If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Realtek onboard LAN doesn't work above 10 Mbps
Issue affects Windows 7, Windows XP, and Ubuntu Linux.
As of yesterday, my onboard Realtek Gigabit Ethernet NIC stopped working fully. It's a "Realtek PCIe GBE Family Controller", model RTL8167. It was the NIC built into the motherboard of my PC, which is an ASUS M4A785-M. Initially, it wasn't working at all when plugged into my router, so I plugged it into a separate hub, and it somehow got working at the lowest possible speed of 10 Mbps. This NIC has previously worked both at 100 Mbps, and 1 Gbps! I also tried this under Ubuntu Linux, thinking maybe it's a Windows driver problem, but the same problem occurs under Linux, so it's looking like a real hardware problem. Perhaps it's an autodetect issue, is there some way to hard-code it to run at 100 Mbps or 1 Gbps, without going through autodetection? Yousuf Khan |
#2
|
|||
|
|||
Realtek onboard LAN doesn't work above 10 Mbps
On Thu, 30 Dec 2010 15:06:31 -0500, Yousuf Khan
wrote: Issue affects Windows 7, Windows XP, and Ubuntu Linux. As of yesterday, my onboard Realtek Gigabit Ethernet NIC stopped working fully. It's a "Realtek PCIe GBE Family Controller", model RTL8167. It was the NIC built into the motherboard of my PC, which is an ASUS M4A785-M. Initially, it wasn't working at all when plugged into my router, so I plugged it into a separate hub, and it somehow got working at the lowest possible speed of 10 Mbps. This NIC has previously worked both at 100 Mbps, and 1 Gbps! I also tried this under Ubuntu Linux, thinking maybe it's a Windows driver problem, but the same problem occurs under Linux, so it's looking like a real hardware problem. Perhaps it's an autodetect issue, is there some way to hard-code it to run at 100 Mbps or 1 Gbps, without going through autodetection? It doesn't make a difference if you hard code or not. If it's defective, then it's defective. -- posted with a Droid |
#3
|
|||
|
|||
Realtek onboard LAN doesn't work above 10 Mbps
"Yousuf Khan" wrote:
Issue affects Windows 7, Windows XP, and Ubuntu Linux. As of yesterday, my onboard Realtek Gigabit Ethernet NIC stopped working fully. It's a "Realtek PCIe GBE Family Controller", model RTL8167. It was the NIC built into the motherboard of my PC, which is an ASUS M4A785-M. Initially, it wasn't working at all when plugged into my router, so I plugged it into a separate hub, and it somehow got working at the lowest possible speed of 10 Mbps. This NIC has previously worked both at 100 Mbps, and 1 Gbps! I also tried this under Ubuntu Linux, thinking maybe it's a Windows driver problem, but the same problem occurs under Linux, so it's looking like a real hardware problem. Perhaps it's an autodetect issue, is there some way to hard-code it to run at 100 Mbps or 1 Gbps, without going through autodetection? Assuming that the NIC hasn't experienced a hardware failure, try using a different cable. Bad network cables (open/short/noisy/whatever) can cause all sorts of "interesting" symptoms. For the same reason, examine the sockets on both the NIC and the router for damage. Joe Morris |
#4
|
|||
|
|||
Realtek onboard LAN doesn't work above 10 Mbps
On Thu, 30 Dec 2010 15:06:31 -0500, Yousuf Khan
wrote: Issue affects Windows 7, Windows XP, and Ubuntu Linux. As of yesterday, my onboard Realtek Gigabit Ethernet NIC stopped working fully. It's a "Realtek PCIe GBE Family Controller", model RTL8167. It was the NIC built into the motherboard of my PC, which is an ASUS M4A785-M. Initially, it wasn't working at all when plugged into my router, so I plugged it into a separate hub, and it somehow got working at the lowest possible speed of 10 Mbps. This NIC has previously worked both at 100 Mbps, and 1 Gbps! I also tried this under Ubuntu Linux, thinking maybe it's a Windows driver problem, but the same problem occurs under Linux, so it's looking like a real hardware problem. Perhaps it's an autodetect issue, is there some way to hard-code it to run at 100 Mbps or 1 Gbps, without going through autodetection? Yousuf Khan Under Windows Device Manager you can find adapter-specific settings that may include the ability to force a specific speed. It won't fix a hardware problem but it might be useful in diagnosis. As for your specific problem, presuming you've eliminated the network cable and any other external influences such that the problem is at or behind the IO panel connector for the nic, one common failure mode - and frankly about the only one a user has much chance of fixing in the field - is a solder joint gone bad, which can often be diagnosed by gently flexing the connector body while the nic is cabled to a working 100Mbit or Gbit port, and checking to see if the status LEDs change state... /daytripper |
#5
|
|||
|
|||
Realtek onboard LAN doesn't work above 10 Mbps
On 30/12/2010 3:44 PM, Joe Morris wrote:
Assuming that the NIC hasn't experienced a hardware failure, try using a different cable. Bad network cables (open/short/noisy/whatever) can cause all sorts of "interesting" symptoms. For the same reason, examine the sockets on both the NIC and the router for damage. Already tried that. Tried about 3 different cables lying around here. Yousuf Khan |
#6
|
|||
|
|||
Realtek onboard LAN doesn't work above 10 Mbps
Yousuf Khan writes:
Issue affects Windows 7, Windows XP, and Ubuntu Linux. As of yesterday, my onboard Realtek Gigabit Ethernet NIC stopped working fully. It's a "Realtek PCIe GBE Family Controller", model RTL8167. It was the NIC built into the motherboard of my PC, which is an ASUS M4A785-M. Initially, it wasn't working at all when plugged into my router, so I plugged it into a separate hub, and it somehow got working at the lowest possible speed of 10 Mbps. This NIC has previously worked both at 100 Mbps, and 1 Gbps! Sounds like going into a fall-back mode. Have you tried a third switch/router? - or just connecting it directly to another computer? You might not get an IP address, but the auto-negotiation should still work and give you a link speed/mode. Perhaps it's an autodetect issue, is there some way to hard-code it to run at 100 Mbps or 1 Gbps, without going through autodetection? Yes, through the PHY. But in that case you MUST disable auto-negotiation at both ends of the link (and set them to the same mode). Good luck, Kai -- Kai Harrekilde-Petersen khp(at)harrekilde(dot)dk |
#7
|
|||
|
|||
Realtek onboard LAN doesn't work above 10 Mbps
On 31/12/2010 4:50 AM, Kai Harrekilde-Petersen wrote:
Yousuf writes: Issue affects Windows 7, Windows XP, and Ubuntu Linux. As of yesterday, my onboard Realtek Gigabit Ethernet NIC stopped working fully. It's a "Realtek PCIe GBE Family Controller", model RTL8167. It was the NIC built into the motherboard of my PC, which is an ASUS M4A785-M. Initially, it wasn't working at all when plugged into my router, so I plugged it into a separate hub, and it somehow got working at the lowest possible speed of 10 Mbps. This NIC has previously worked both at 100 Mbps, and 1 Gbps! Sounds like going into a fall-back mode. Have you tried a third switch/router? - or just connecting it directly to another computer? You might not get an IP address, but the auto-negotiation should still work and give you a link speed/mode. Well, I did try connecting the interface directly into the broadband modem, bypassing the routers, switches, etc. It wouldn't work there either with autonegotiate on. However, a strange development happened last night. I bought a new gigabit network card for the machine, and got it working, moved the cable from the onboard NIC to the add-in NIC, etc. Everything was working like normal with the new NIC. Then a couple of hours later, I tried the onboard NIC again, by plugging a second cable into it, and strangely enough it worked again! I'm not saying that the addition of the add-in NIC caused the onboard NIC to work again, it's just a coincidence. Perhaps it required a few hours of "rest"? In fact, both NICs were working simultaneously at gigabit speeds! Gremlins in the system. Perhaps it's an autodetect issue, is there some way to hard-code it to run at 100 Mbps or 1 Gbps, without going through autodetection? Yes, through the PHY. But in that case you MUST disable auto-negotiation at both ends of the link (and set them to the same mode). Good luck, Ah, okay that might explain why non-autonegotiate never worked, as I didn't hard code it into the switcher end too. I just changed it at the computer end, that's all. Yousuf Khan |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Gigabyte GA-EP45-UD3L (rev. 1.0) onboard LAN just doesn't work? | John Doe | Homebuilt PC's | 4 | April 14th 10 08:24 PM |
help! dual onboard lan won't work | arnulfo | Homebuilt PC's | 1 | January 25th 05 05:22 AM |
asus a7n8x-e onboard lan doesnt work | nmx | Homebuilt PC's | 1 | July 10th 04 03:55 AM |
wake-on-lan after power loss ( doesn't work). | H Brett Bolen | General | 42 | January 12th 04 11:43 PM |
Anyone got a working lan with A7N8X-X onboard lan chip? | Bob H | Asus Motherboards | 3 | January 9th 04 11:43 PM |