I'm using 12.04 on an Acer 722, and just after I've installed MESA drivers to use open source graphics drivers, the wireless connection stopped working. As soon as I've removed bcm STA drivers, the adapter came back to life, finds my router, connects, fetches an IP address from the DHCP server (mikrotik) but no browsing.
On terminal, I've ping'd my router (192.168.88.1) and after a good amount of time, it starts answering "unreachable". Through cable everything seems fine. Other devices run fine under this same network (as this same netbook did before with the STA drivers).
Is there a way I can run the previous driver (it fails with blacklist error on jockey log, even after I've put an # mark before the blacklist marking on the blacklist file) or are there any other options?
Update: Yes, everything comes out fine from the DHCP server. When I try to PING the provided address from another station, it goes "unreachable". (that also happens after a good amount of time on the netbook, updated above) Setting all the IPv4 info manually, the same occurs. The addresses are on the accordingly range.
I've posted the question as "last resort" since I've tried everything that I could found on web so far, even issues that weren't like mine but involved similar hardware. With ATI'ś proprietary graphics driver from AMD website I did not have such issues, since the STA driver worked flawlessly. But once MESA drivers were installed, I can't enable it anymore. I'd rather stick with the open source drivers, because the overall machine seems to run faster and there are no hibernation issues.