It looks like you have one of the new Intel "Sandy Bridge" APU's:
Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz The graphics part of this chip is poorly supported in Ubuntu 11.04. Some people have been able to get the desktop to work but there are graphical errors/glitches, and the system crashes when running a game. Unfortunately, you cannot even get to a desktop, perhaps due to the particular display interface used in your laptop. Things improved in the upstream 2.6.39-rc6 kernel but then regressed in 2.6.39-rc7 - see http://www.phoronix.com/scan.php?page=article&item=intel_2639_borks&num=1 It has been reported that the latest code which will be in the upcoming 2.6.40 kernel (it may possibly become the 3.0 kernel) is working again. In the meantime, if you wish to use the 2.6.39 final kernel (available in a PPA at http://kernel.ubuntu.com/~kernel-ppa/mainline/ with a date of 19-May-2011) you can boot it with the i915.semaphores=1 parameter on the GRUB command-line to avoid the regression. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/777212 Title: [Lenovo L420] System boots to garbled display -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
