Get this logged on a Ubuntu vivid i386 with 3.19-rc4 kernel and nvidia 346.35 WARNING: CPU: 1 PID: 918 at /build/buildd/linux-3.19.0/drivers/gpu/drm/drm_ioctl.c:143 drm_setversion+0x185/0x190 [drm]() No drm_driver.set_busid() implementation provided by nv_drm_driver [nvidia]. Use drm_dev_set_unique() to set the unique name explicitly. This has been also reported on launchpad: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1413971
Was already reported upstream and needs to be fixed by nvidia: https://devtalk.nvidia.com/default/topic/796559/linux/kernel-3-18-warning-no-drm_driver-set_busid-implementation-provided-by-nvidia_frontend_exit_modu/