Dear All, I experienced the same problem with an other switchable graphics configuration: ATI Radeon HD 3650 discrete and some Intel card. (Lenovo Thinkpad T500)
Boot hangs and I got the same error message, just the pci id was different: udevd-work[86]: '/sbin/modprobe -bv unexpected exit with status 0x0009 Disabling the switchable graphics option in BIOS resulted good boot either using Radeor or Intel video cards. I suggest to include the HD 3650 model to the topic of the bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/727620 Title: [Radeon HD 5650 and 5470] Kernel BUG during recovery boot and in normal boot (Hybrid graphics) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
