Slow / Buggy ethernet connection (17.1 cinm, BCM57781)

[gekko42]

Hello dear mint users!

For several days i am having heavy connections problems with my ethernet cable. It's not an ISP, cable or router problem - I'm using dual boot on the machine and on windows (8.1) everything works perfectly fine.

Speed is horibly slow (about 5 kb/sec); having many package losses and in genarel it's almost imposible to surf the web (for that reason I'm writing this on windows).
-lspci says me i'm using

Ethernet controller: Broadcom Corporation NetLink BCM57781 Gigabit Ethernet PCIe (rev 10)

I tried to find solutions in this forum and the web, but found nothing that helped (tried to deactive ipv6 for example). So I did a complete reinstall of 17.1, but yet while downloading the language packages during the installation i could see that the problem still exists. I cannot even ping google without issues:

ping http://www.google.com -c10
PING http://www.google.com (173.194.113.148) 56(84) bytes of data.
64 bytes from ham02s11-in-f20.1e100.net (173.194.113.148): icmp_seq=1 ttl=54 time=34.9 ms
64 bytes from ham02s11-in-f20.1e100.net (173.194.113.148): icmp_seq=8 ttl=54 time=35.2 ms
64 bytes from ham02s11-in-f20.1e100.net (173.194.113.148): icmp_seq=9 ttl=54 time=35.0 ms

--- http://www.google.com ping statistics ---
10 packets transmitted, 3 received, 70% packet loss, time 9003ms
rtt min/avg/max/mdev = 34.956/35.084/35.236/0.191 ms

I cannot remeber exactly when the problems started, but i guess its because of a new driver or something similar?
If anyone has an idea or suggestion i would be very thankful.

Thank you very much,
Regards,
gekko42

[tuomo]

Hi

I have the same problem. The way how I fixed was changing the connection option from cable to wireless. But this is not a solution for your question, just small help.