I found that, while disabling screen blanking did stop the bug being triggered in certain circumstances, wireless would still be disabled whenever I used the XVideo extension. As most of what I use the laptop for involves a mix of WiFi and XVideo, I reverted to Intrepid for a while...
I've patched the Openchrome package from Jaunty to include the patch from Trac and tested it briefly on my Jaunty install, and I can verify that it fixed the issues I've seen, both with screen blanking and XV and also with suspend/resume. It's in my PPA, for anyone who feels up to trying it -- version 1:0.2.903+svn713-1ubuntu2~ppa3 is identical to 1:0.2.903+svn713-1ubuntu1 (which is the current Jaunty package) apart from the two-line patch. I'm in the process of upgrading to Jaunty again :). I'll attach the debdiff, for reference. ** Attachment added: "Debdiff including the patch from Openchrome Trac 288" http://launchpadlibrarian.net/26438251/xserver-xorg-video-openchrome_0.2.903%2Bsvn713-1ubuntu2%7Eppa3.debdiff -- [HP 2133 MiniNote laptop] Unexpected and unrecoverable wireless disconnect with B43 driver https://bugs.launchpad.net/bugs/331952 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs