I updated via the intrepid PPA mentioned above and nothing changed. The system booted up and "Ubuntu" went into Failsafe low graphics mode. I hit the OK button on "Please wait, the display will restart in a minute" (weird dialogue ?) and got to a shell prompt.
I tried moving aside my plasma* files in share/config but no change. I changed the X driver from nvidia to nv and got a KDE session but of course KDE without nvidia driver doesn't understand multiple screens so I set the driver back to nvidia, with the nvidia twinview settings and rebooted, same problem. Weirdly after that when I logged in at the shell, x suddenly started without me requesting it and I got a full KDE session back again, with nvidia and twinview settings working. I know that nvidia is binary driver but this worked fine pre 4.2.1 specs: Kubuntu 8.10 nvidia geforce 8400M twinview enabled, using nvidia glx driver (both 173, 177 and 180 show the problem) screen 1: 1280x800 laptop panel screen 2: 1680x1050 DFP via HDMI port. Is it possible the fix only addresses single screen setups ? attached a snipped dump of the .xsession-errors on initial boot up: at the moment I am not shutting down my PC as I can't afford an hour a day booting my computer. ** Attachment added: "snipped.xsessionerrors.txt" http://launchpadlibrarian.net/24025512/snipped.xsessionerrors.txt -- [jaunty] plasma crashes on start with SIGSEGV https://bugs.launchpad.net/bugs/338205 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