It looks if events are preceeding me, but here is what I've found so far: 1. The earlier comments about using a custom kernel are just a red herring. I build a custom kernel using the standard lowlatency configuration and (not surprisingly) the bcmwl dkms module failed to compile.
2. A diff between the distro /boot/config-3.8.0-27-lowlatency and config-3.8.0-27-generic shows VERY few changes, mainly PREEMPT stuff and (probably) consequential LOCK variables - see attachment for full diff. 3. I built my custom kernel from the distro source package, not git. I intend to hack the patch proposed in https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1154036 (posted in march 2013!!) and try to apply it to my kernel source. ** Patch added: "diff between lowlatency and generic configs" https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1156138/+attachment/3759028/+files/config-standard.diff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156138 Title: bcmwl-kernel-source fails to build on lowlatency kernel [FATAL: modpost: GPL-incompatible module wl.ko uses GPL-only symbol '__rcu_read_unlock'] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1156138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
