Okay, that also explains why it happens only when my graphics card is locking up.
So to summarise, this is my case: My graphics card is broken (obviously a hardware defect) and it makes my computer hang sometimes for a short period of time. When my computer hangs for some time the wireless connection crashes and the Microcode SW error appears. So these are two different problems in my case, but one of the problems (nvidia graphics card hangs) causes the second problem (ipw3945 error) to appear. -- ipw3945: Microcode SW error detected. https://bugs.launchpad.net/bugs/118110 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs