@Christopher > so the default Trusty kernel crashes immediately
Yes. According to the backtrace, it's due to the Radeon driver (there are some lines with 'r600_pcie(...)'). I can take a picture but should I open a new bug report? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1170917 Title: IP: [<ffffffffa01b6c05>] r600_pcie_gart_tlb_flush+0xf5/0x110 [radeon]; RIP: 0010:[<ffffffffa01b6c05>] [<ffffffffa01b6c05>] r600_pcie_gart_tlb_flush+0xf5/0x110 [radeon] To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1170917/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs