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#1
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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 |
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#2
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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
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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
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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
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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 |
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