I run a home wlan and a few days ago I upgraded a hp dv7 pavilion laptop from Oneiric to Precise. I had the proprietary Broadcom STA driver (wl module) activated.
Whenever this laptop was connected to WiFi had speedtest.net result of 8 Mbps (down) and all other machines (laptops, smartphones) could only get speedtest.net results well below 1 Mbps (mostly 500 Kbps) with severe ping problems and other bizarre effects. When the laptop was off everything was OK for the other machines.
Thinking about this a little I decided to remove the STA proprietary driver and use the opensource one. Everything works perfectly now for all the machines on the Wifi.
I wonder if the STA driver update in precise is rotten since it appears that it transformed my machine into a WiFi jammer. Is this possible ?
It seems that this issue is lined to the BCM 4314 itself, not a particular laptop.
What may be the possible reason for such a peculiar behavior? Can I overcome it without disabling the proprietary driver? What can I do to troubleshoot this problem?
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