Hello to all,
I have a DH67BL motherboard and it seems that the Intel 82579V LAN controller mounted on board has some problems that need to be fixed by Intel...
The problem is related to link speed. I've connected it to a 10/100 switch with a cat.5 cable and if I set the link speed (from Intel driver) to:
- "autonegotiate": the OS says me that the cable is disconnected.
- 100 Mb/s: OS says again cable disconnected but then PC becomes locked for 10-20 sec and responsive for 1-2 sec and so on. Eventually there comes out a popup saying that video car stopped to respond and it was recovered (seems some IRQ or phisical address problem?!?!). It remain so until I can, in those 1-2 sec. of responsiveness with much patience, change the link speed settings.
- 10 Mb/s full duplex or half duplex: it works correctly, but on the detected speed it says 10 Mb/s Half duplex, even when set Full duplex.
- 1000 Mb/s: not tested, I don't have gigabit hardware to test with.
That said here some fact:
- OS: Windows 7 64bit but tested with a live cd of Ubuntu 10.10 64 bit and it does exactly the same things.
- Drivers and BIOS: all the latest, updated the 25th march 2011 with latest releases found on Intel website (they where all 1-2 days old!)
- The cable is a cat.5 connected to the main company switch.
- If I connect another PC to the same ethernet cable it works without problems at 100 Mb/s Full Duplex
- I've tested to connect the same PC in cross to an Asus laptop and the problems remains the same. The strange thing is that even the laptop says that there is no cable...
- I've tried to disable al power management features from the intel driver as I've read that there could be incompatibilities but nothing changes
- I've had those problems with the first DH67BL, then I've managed to change it in warranty from the reseller (getting also the new batch without the infamous SATA problem...) and the symptoms of LAN controller are the same! So we cannot says that it's an hardware defect, it's the same with two different motherboards.
It seems so strange to me that no one wrote that before, it should be so for all boards? Isn't it?
Can someone help me to understand what's going on? Must I buy a PCI lan adapter because the internal one is buggy?
Thank you in advance to all that want to help me!