12.919882] ------------[ cut here ]------------ [ 12.920016] WARNING: CPU: 1 PID: 1115 at /build/linux-lts-trusty-8sYhvP/linux-lts-trusty-3.13.0/drivers/gpu/drm/drm_crtc.c:87 drm_warn_on_modeset_not_all_locked+0x61/0x80 [drm]() [ 12.920020] Modules linked in: snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_seq_device crc32_pclmul snd_timer ftdi_sio usbserial vboxvideo(OX) aesni_intel snd ttm ablk_helper cryptd drm_kms_helper psmouse drm lrw serio_raw aes_i586 video mac_hid soundcore xts sysimgblt i2c_piix4 gf128mul snd_page_alloc vboxguest(OX) bnep sysfillrect rfcomm bluetooth parport_pc syscopyarea ppdev lp parport binfmt_misc ahci libahci e1000 pata_acpi [ 12.920080] CPU: 1 PID: 1115 Comm: Xorg Tainted: G W OX 3.13.0-85-generic #129~precise1-Ubuntu [ 12.920082] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 12.920089] 00200286 00200286 f0ebfe60 c168d4b5 f86c684c 00000057 f0ebfe90 c105ace4 [ 12.920095] c187fd9c 00000001 0000045b f86c684c 00000057 f86ab7a1 f86ab7a1 f043b000 [ 12.920099] f1b2e9f0 f1b2e800 f0ebfea0 c105ad22 00000009 00000000 f0ebfeb4 f86ab7a1 [ 12.920103] Call Trace: [ 12.920216] [] dump_stack+0x58/0x72 [ 12.920240] [] warn_slowpath_common+0x84/0xa0 [ 12.920256] [] ? drm_warn_on_modeset_not_all_locked+0x61/0x80 [drm] [ 12.920266] [] ? drm_warn_on_modeset_not_all_locked+0x61/0x80 [drm] [ 12.920269] [] warn_slowpath_null+0x22/0x30 [ 12.920276] [] drm_warn_on_modeset_not_all_locked+0x61/0x80 [drm] [ 12.920287] [] drm_fb_helper_restore_fbdev_mode+0x1b/0xc0 [drm_kms_helper] [ 12.920297] [] vbox_driver_lastclose+0x33/0x50 [vboxvideo] [ 12.920306] [] drm_lastclose+0x45/0x180 [drm] [ 12.920315] [] drm_release+0x2fa/0x460 [drm] [ 12.920324] [] __fput+0x98/0x220 [ 12.920326] [] ____fput+0xd/0x10 [ 12.920331] [] task_work_run+0x71/0x90 [ 12.920345] [] do_notify_resume+0x97/0xa0 [ 12.920352] [] work_notifysig+0x30/0x37 [ 12.920355] ---[ end trace 482addcb9cbdf5a2 ]--- [ 13.056981] ------------[ cut here ]------------ [ 13.057022] WARNING: CPU: 1 PID: 1115 at /build/linux-lts-trusty-8sYhvP/linux-lts-trusty-3.13.0/drivers/gpu/drm/drm_crtc.c:87 drm_warn_on_modeset_not_all_locked+0x61/0x80 [drm]() [ 13.057024] Modules linked in: snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_seq_device crc32_pclmul snd_timer ftdi_sio usbserial vboxvideo(OX) aesni_intel snd ttm ablk_helper cryptd drm_kms_helper psmouse drm lrw serio_raw aes_i586 video mac_hid soundcore xts sysimgblt i2c_piix4 gf128mul snd_page_alloc vboxguest(OX) bnep sysfillrect rfcomm bluetooth parport_pc syscopyarea ppdev lp parport binfmt_misc ahci libahci e1000 pata_acpi [ 13.057059] CPU: 1 PID: 1115 Comm: Xorg Tainted: G W OX 3.13.0-85-generic #129~precise1-Ubuntu [ 13.057060] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 13.057062] 00203286 00203286 f0ebfe60 c168d4b5 f86c684c 00000057 f0ebfe90 c105ace4 [ 13.057067] c187fd9c 00000001 0000045b f86c684c 00000057 f86ab7a1 f86ab7a1 f043b000 [ 13.057071] f1b2e9f0 f1b2e800 f0ebfea0 c105ad22 00000009 00000000 f0ebfeb4 f86ab7a1 [ 13.057075] Call Trace: [ 13.057088] [] dump_stack+0x58/0x72 [ 13.057096] [] warn_slowpath_common+0x84/0xa0 [ 13.057113] [] ? drm_warn_on_modeset_not_all_locked+0x61/0x80 [drm] [ 13.057126] [] ? drm_warn_on_modeset_not_all_locked+0x61/0x80 [drm] [ 13.057130] [] warn_slowpath_null+0x22/0x30 [ 13.057140] [] drm_warn_on_modeset_not_all_locked+0x61/0x80 [drm] [ 13.057183] [] drm_fb_helper_restore_fbdev_mode+0x1b/0xc0 [drm_kms_helper] [ 13.057202] [] ? drm_ht_remove+0x35/0x40 [drm] [ 13.057214] [] vbox_driver_lastclose+0x33/0x50 [vboxvideo] [ 13.057227] [] drm_lastclose+0x45/0x180 [drm] [ 13.057237] [] drm_release+0x2fa/0x460 [drm] [ 13.057244] [] __fput+0x98/0x220 [ 13.057247] [] ____fput+0xd/0x10 [ 13.057251] [] task_work_run+0x71/0x90 [ 13.057257] [] do_notify_resume+0x97/0xa0 [ 13.057262] [] work_notifysig+0x30/0x37 [ 13.057265] ---[ end trace 482addcb9cbdf5a3 ]---