apport information ** Attachment added: "Lsusb.txt" http://launchpadlibrarian.net/48255385/Lsusb.txt -- X hanging | radeon:radeon_read_ring_rptr: NULL pointer dereference at (null) https://bugs.launchpad.net/bugs/496566 You received this bug notification because you are a member of Kernel Bugs, which is subscribed to linux in ubuntu.