[ 30.639562] systemd-logind[1581]: Failed to start unit user@999.service: Unknown unit: user@999.service [ 30.641327] systemd-logind[1581]: Failed to start user service: Unknown unit: user@999.service [ 30.661754] systemd-logind[1581]: New session c1 of user ubuntu-gnome. [ 30.673516] systemd-logind[1581]: New session c2 of user ubuntu-gnome. [ 30.689144] systemd-logind[1581]: New session c3 of user ubuntu-gnome. [ 30.703467] systemd-logind[1581]: New session c4 of user ubuntu-gnome. [ 30.723510] systemd-logind[1581]: New session c5 of user ubuntu-gnome. [ 31.294948] systemd-logind[1581]: New session c6 of user ubuntu-gnome. [ 31.666908] systemd-logind[1581]: New session c7 of user ubuntu-gnome. [ 31.666938] systemd-logind[1581]: Linked /tmp/.X11-unix/X0 to /run/user/999/X11-display. [ 35.830593] sound hdaudioC1D3: hda-codec: out of range cmd 3:5:707:ffffffff [ 39.001383] BTRFS info (device sdb3): disk space caching is enabled [ 39.008008] FAT-fs (sdb1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck. [ 39.028084] EXT4-fs (sdb2): mounted filesystem with ordered data mode. Opts: (null) [ 50.963931] snd_hda_intel 0000:01:00.1: Disabling via VGA-switcheroo [ 51.185175] snd_hda_intel 0000:01:00.1: Cannot lock devices! [ 53.113243] calling mux switch 16 [ 53.113319] mux mutex set switched 0 [ 53.113322] calling mux switch 16 [ 53.113462] mux switched 0 [ 53.113468] ACPI Warning: \_SB_.PCI0.P0P1.PEGP._DSM: Argument #4 type mismatch - Found [Integer], ACPI requires [Package] (20140424/nsarguments-95) [ 53.113689] ACPI: \_SB_.PCI0.P0P1.PEGP: failed to evaluate _DSM [ 53.113693] ACPI Warning: \_SB_.PCI0.P0P1.PEGP._DSM: Argument #4 type mismatch - Found [Integer], ACPI requires [Package] (20140424/nsarguments-95) [ 53.121398] ACPI: \_SB_.PCI0.P0P1.PEGP: failed to evaluate _DSM [ 53.121653] ACPI Warning: \_SB_.PCI0.P0P1.PEGP._DSM: Argument #4 type mismatch - Found [Integer], ACPI requires [Package] (20140424/nsarguments-95) [ 53.537620] ACPI: \_SB_.PCI0.P0P1.PEGP: failed to evaluate _DSM [ 53.800443] snd_hda_intel 0000:01:00.1: Enabling via VGA-switcheroo [ 53.960256] ------------[ cut here ]------------ [ 53.960304] WARNING: CPU: 3 PID: 181 at /build/buildd/linux-3.16.0/drivers/gpu/drm/drm_mm.c:765 drm_mm_takedown+0x2e/0x30 [drm]() [ 53.960307] Memory manager not clean during takedown. [ 53.960309] Modules linked in: nls_iso8859_1 dm_crypt btrfs arc4 brcmsmac cordic brcmutil b43 xor snd_hda_codec_hdmi mac80211 cfg80211 ssb raid6_pq dell_wmi sparse_keymap intel_powerclamp coretemp kvm_intel dell_laptop dcdbas kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper dm_multipath ablk_helper cryptd scsi_dh uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev joydev media serio_raw intel_ips snd_hda_codec_idt snd_hda_codec_generic lpc_ich snd_hda_intel snd_seq_midi rfcomm snd_seq_midi_event bnep bcma snd_hda_controller snd_rawmidi bluetooth snd_hda_codec snd_hwdep 6lowpan_iphc snd_pcm snd_seq snd_seq_device snd_timer snd soundcore dell_smo8800 mei_me mac_hid mei parport_pc ppdev shpchp lp parport squashfs overlayfs [ 53.960353] uas usb_storage nls_utf8 isofs jfs xfs libcrc32c reiserfs dm_mirror dm_region_hash dm_log hid_generic usbhid hid nouveau i915 psmouse mxm_wmi ttm i2c_algo_bit ahci drm_kms_helper libahci r8169 drm mii wmi video [ 53.960372] CPU: 3 PID: 181 Comm: kworker/u8:7 Tainted: G W 3.16.0-23-generic #31-Ubuntu [ 53.960375] Hardware name: Dell Inc. Vostro 3500/ , BIOS A10 10/25/2010 [ 53.960383] Workqueue: kacpi_hotplug acpi_hotplug_work_fn [ 53.960385] 0000000000000009 ffff880036487af0 ffffffff8177fcbc ffff880036487b38 [ 53.960389] ffff880036487b28 ffffffff8106fd8d ffff8800366c45d8 ffff8800366c4170 [ 53.960392] 0000000000000000 0000000000000000 ffff880141732680 ffff880036487b88 [ 53.960395] Call Trace: [ 53.960405] [] dump_stack+0x45/0x56 [ 53.960411] [] warn_slowpath_common+0x7d/0xa0 [ 53.960415] [] warn_slowpath_fmt+0x4c/0x50 [ 53.960431] [] drm_mm_takedown+0x2e/0x30 [drm] [ 53.960450] [] drm_vma_offset_manager_destroy+0x1b/0x30 [drm] [ 53.960461] [] ttm_bo_device_release+0xfa/0x130 [ttm] [ 53.960505] [] nouveau_ttm_fini+0x58/0x80 [nouveau] [ 53.960537] [] nouveau_drm_unload+0x63/0xb0 [nouveau] [ 53.960552] [] drm_dev_unregister+0x29/0xb0 [drm] [ 53.960567] [] drm_put_dev+0x23/0x80 [drm] [ 53.960597] [] nouveau_drm_remove+0x2c/0x40 [nouveau] [ 53.960604] [] pci_device_remove+0x3b/0xc0 [ 53.960612] [] __device_release_driver+0x7f/0xf0 [ 53.960616] [] device_release_driver+0x23/0x30 [ 53.960621] [] pci_stop_bus_device+0x94/0xa0 [ 53.960624] [] pci_stop_and_remove_bus_device+0x12/0x20 [ 53.960629] [] disable_slot+0x57/0xb0 [ 53.960632] [] acpiphp_check_bridge.part.9+0xe8/0x100 [ 53.960636] [] acpiphp_hotplug_notify+0xdc/0x260 [ 53.960639] [] ? acpiphp_post_dock_fixup+0xc0/0xc0 [ 53.960645] [] acpi_device_hotplug+0x39c/0x3e3 [ 53.960648] [] acpi_hotplug_work_fn+0x1e/0x29 [ 53.960652] [] process_one_work+0x182/0x4e0 [ 53.960655] [] worker_thread+0x6b/0x6a0 [ 53.960658] [] ? __schedule+0x39d/0x890 [ 53.960661] [] ? process_one_work+0x4e0/0x4e0 [ 53.960665] [] kthread+0xdb/0x100 [ 53.960669] [] ? kthread_create_on_node+0x1c0/0x1c0 [ 53.960674] [] ret_from_fork+0x7c/0xb0 [ 53.960678] [] ? kthread_create_on_node+0x1c0/0x1c0 [ 53.960680] ---[ end trace 4e49b2fc5def81ec ]--- [ 53.960688] [TTM] Finalizing pool allocator [ 53.960695] [TTM] Finalizing DMA pool allocator [ 53.960702] ------------[ cut here ]------------ [ 53.960713] WARNING: CPU: 3 PID: 181 at /build/buildd/linux-3.16.0/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c:535 ttm_dma_free_pool+0x139/0x140 [ttm]() [ 53.960715] Modules linked in: nls_iso8859_1 dm_crypt btrfs arc4 brcmsmac cordic brcmutil b43 xor snd_hda_codec_hdmi mac80211 cfg80211 ssb raid6_pq dell_wmi sparse_keymap intel_powerclamp coretemp kvm_intel dell_laptop dcdbas kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper dm_multipath ablk_helper cryptd scsi_dh uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev joydev media serio_raw intel_ips snd_hda_codec_idt snd_hda_codec_generic lpc_ich snd_hda_intel snd_seq_midi rfcomm snd_seq_midi_event bnep bcma snd_hda_controller snd_rawmidi bluetooth snd_hda_codec snd_hwdep 6lowpan_iphc snd_pcm snd_seq snd_seq_device snd_timer snd soundcore dell_smo8800 mei_me mac_hid mei parport_pc ppdev shpchp lp parport squashfs overlayfs [ 53.960758] uas usb_storage nls_utf8 isofs jfs xfs libcrc32c reiserfs dm_mirror dm_region_hash dm_log hid_generic usbhid hid nouveau i915 psmouse mxm_wmi ttm i2c_algo_bit ahci drm_kms_helper libahci r8169 drm mii wmi video [ 53.960775] CPU: 3 PID: 181 Comm: kworker/u8:7 Tainted: G W 3.16.0-23-generic #31-Ubuntu [ 53.960777] Hardware name: Dell Inc. Vostro 3500/ , BIOS A10 10/25/2010 [ 53.960780] Workqueue: kacpi_hotplug acpi_hotplug_work_fn [ 53.960781] 0000000000000009 ffff880036487ae0 ffffffff8177fcbc 0000000000000000 [ 53.960784] ffff880036487b18 ffffffff8106fd8d ffff8800366c72b0 ffff880141732780 [ 53.960786] 0000000000000008 ffff88014187a000 ffff880143427050 ffff880036487b28 [ 53.960789] Call Trace: [ 53.960793] [] dump_stack+0x45/0x56 [ 53.960798] [] warn_slowpath_common+0x7d/0xa0 [ 53.960801] [] warn_slowpath_null+0x1a/0x20 [ 53.960812] [] ttm_dma_free_pool+0x139/0x140 [ttm] [ 53.960820] [] ttm_dma_page_alloc_fini+0x8a/0x10e [ttm] [ 53.960828] [] ttm_mem_global_release+0x19/0x90 [ttm] [ 53.960859] [] nouveau_ttm_mem_global_release+0x12/0x20 [nouveau] [ 53.960879] [] drm_global_item_unref+0x68/0x90 [drm] [ 53.960908] [] nouveau_ttm_global_release+0x2f/0x40 [nouveau] [ 53.960938] [] nouveau_ttm_fini+0x60/0x80 [nouveau] [ 53.960969] [] nouveau_drm_unload+0x63/0xb0 [nouveau] [ 53.960983] [] drm_dev_unregister+0x29/0xb0 [drm] [ 53.960996] [] drm_put_dev+0x23/0x80 [drm] [ 53.961025] [] nouveau_drm_remove+0x2c/0x40 [nouveau] [ 53.961030] [] pci_device_remove+0x3b/0xc0 [ 53.961037] [] __device_release_driver+0x7f/0xf0 [ 53.961042] [] device_release_driver+0x23/0x30 [ 53.961046] [] pci_stop_bus_device+0x94/0xa0 [ 53.961049] [] pci_stop_and_remove_bus_device+0x12/0x20 [ 53.961053] [] disable_slot+0x57/0xb0 [ 53.961056] [] acpiphp_check_bridge.part.9+0xe8/0x100 [ 53.961058] [] acpiphp_hotplug_notify+0xdc/0x260 [ 53.961061] [] ? acpiphp_post_dock_fixup+0xc0/0xc0 [ 53.961065] [] acpi_device_hotplug+0x39c/0x3e3 [ 53.961068] [] acpi_hotplug_work_fn+0x1e/0x29 [ 53.961072] [] process_one_work+0x182/0x4e0 [ 53.961075] [] worker_thread+0x6b/0x6a0 [ 53.961078] [] ? __schedule+0x39d/0x890 [ 53.961081] [] ? process_one_work+0x4e0/0x4e0 [ 53.961085] [] kthread+0xdb/0x100 [ 53.961089] [] ? kthread_create_on_node+0x1c0/0x1c0 [ 53.961092] [] ret_from_fork+0x7c/0xb0 [ 53.961095] [] ? kthread_create_on_node+0x1c0/0x1c0 [ 53.961098] ---[ end trace 4e49b2fc5def81ed ]--- [ 53.961161] ------------[ cut here ]------------ [ 53.961176] WARNING: CPU: 3 PID: 181 at /build/buildd/linux-3.16.0/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c:535 ttm_dma_free_pool+0x139/0x140 [ttm]() [ 53.961178] Modules linked in: nls_iso8859_1 dm_crypt btrfs arc4 brcmsmac cordic brcmutil b43 xor snd_hda_codec_hdmi mac80211 cfg80211 ssb raid6_pq dell_wmi sparse_keymap intel_powerclamp coretemp kvm_intel dell_laptop dcdbas kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper dm_multipath ablk_helper cryptd scsi_dh uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev joydev media serio_raw intel_ips snd_hda_codec_idt snd_hda_codec_generic lpc_ich snd_hda_intel snd_seq_midi rfcomm snd_seq_midi_event bnep bcma snd_hda_controller snd_rawmidi bluetooth snd_hda_codec snd_hwdep 6lowpan_iphc snd_pcm snd_seq snd_seq_device snd_timer snd soundcore dell_smo8800 mei_me mac_hid mei parport_pc ppdev shpchp lp parport squashfs overlayfs [ 53.961219] uas usb_storage nls_utf8 isofs jfs xfs libcrc32c reiserfs dm_mirror dm_region_hash dm_log hid_generic usbhid hid nouveau i915 psmouse mxm_wmi ttm i2c_algo_bit ahci drm_kms_helper libahci r8169 drm mii wmi video [ 53.961238] CPU: 3 PID: 181 Comm: kworker/u8:7 Tainted: G W 3.16.0-23-generic #31-Ubuntu [ 53.961240] Hardware name: Dell Inc. Vostro 3500/ , BIOS A10 10/25/2010 [ 53.961244] Workqueue: kacpi_hotplug acpi_hotplug_work_fn [ 53.961246] 0000000000000009 ffff880036487ae0 ffffffff8177fcbc 0000000000000000 [ 53.961250] ffff880036487b18 ffffffff8106fd8d ffff8800366c72b0 ffff8801413ecc00 [ 53.961253] 0000000000000002 ffff88014187a000 ffff880143427050 ffff880036487b28 [ 53.961256] Call Trace: [ 53.961262] [] dump_stack+0x45/0x56 [ 53.961266] [] warn_slowpath_common+0x7d/0xa0 [ 53.961269] [] warn_slowpath_null+0x1a/0x20 [ 53.961279] [] ttm_dma_free_pool+0x139/0x140 [ttm] [ 53.961288] [] ttm_dma_page_alloc_fini+0x8a/0x10e [ttm] [ 53.961297] [] ttm_mem_global_release+0x19/0x90 [ttm] [ 53.961333] [] nouveau_ttm_mem_global_release+0x12/0x20 [nouveau] [ 53.961351] [] drm_global_item_unref+0x68/0x90 [drm] [ 53.961383] [] nouveau_ttm_global_release+0x2f/0x40 [nouveau] [ 53.961417] [] nouveau_ttm_fini+0x60/0x80 [nouveau] [ 53.961450] [] nouveau_drm_unload+0x63/0xb0 [nouveau] [ 53.961466] [] drm_dev_unregister+0x29/0xb0 [drm] [ 53.961481] [] drm_put_dev+0x23/0x80 [drm] [ 53.961511] [] nouveau_drm_remove+0x2c/0x40 [nouveau] [ 53.961516] [] pci_device_remove+0x3b/0xc0 [ 53.961523] [] __device_release_driver+0x7f/0xf0 [ 53.961527] [] device_release_driver+0x23/0x30 [ 53.961531] [] pci_stop_bus_device+0x94/0xa0 [ 53.961535] [] pci_stop_and_remove_bus_device+0x12/0x20 [ 53.961539] [] disable_slot+0x57/0xb0 [ 53.961541] [] acpiphp_check_bridge.part.9+0xe8/0x100 [ 53.961545] [] acpiphp_hotplug_notify+0xdc/0x260 [ 53.961548] [] ? acpiphp_post_dock_fixup+0xc0/0xc0 [ 53.961551] [] acpi_device_hotplug+0x39c/0x3e3 [ 53.961554] [] acpi_hotplug_work_fn+0x1e/0x29 [ 53.961558] [] process_one_work+0x182/0x4e0 [ 53.961561] [] worker_thread+0x6b/0x6a0 [ 53.961565] [] ? __schedule+0x39d/0x890 [ 53.961568] [] ? process_one_work+0x4e0/0x4e0 [ 53.961572] [] kthread+0xdb/0x100 [ 53.961575] [] ? kthread_create_on_node+0x1c0/0x1c0 [ 53.961579] [] ret_from_fork+0x7c/0xb0 [ 53.961582] [] ? kthread_create_on_node+0x1c0/0x1c0 [ 53.961584] ---[ end trace 4e49b2fc5def81ee ]--- [ 53.961724] [TTM] Zone kernel: Used memory at exit: 3794 kiB [ 53.961732] vga_switcheroo: disabled [ 53.961944] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=none,decodes=io+mem:owns=none [ 53.963119] pci 0000:01:00.0: [10de:0a75] type 00 class 0x030000 [ 53.963140] pci 0000:01:00.0: reg 0x10: [mem 0xf9000000-0xf9ffffff] [ 53.963152] pci 0000:01:00.0: reg 0x14: [mem 0xc0000000-0xcfffffff 64bit pref] [ 53.963163] pci 0000:01:00.0: reg 0x1c: [mem 0xd0000000-0xd1ffffff 64bit pref] [ 53.963172] pci 0000:01:00.0: reg 0x24: [io 0xe000-0xe07f] [ 53.963181] pci 0000:01:00.0: reg 0x30: [mem 0xfa000000-0xfa07ffff pref] [ 53.963481] vgaarb: device added: PCI:0000:01:00.0,decodes=io+mem,owns=none,locks=none [ 53.963486] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=none:owns=none [ 53.963529] pci 0000:01:00.1: [10de:0be3] type 00 class 0x040300 [ 53.963543] pci 0000:01:00.1: reg 0x10: [mem 0xfa080000-0xfa083fff] [ 53.963690] pci 0000:01:00.0: BAR 1: assigned [mem 0xc0000000-0xcfffffff 64bit pref] [ 53.963700] pci 0000:01:00.0: BAR 3: assigned [mem 0xd0000000-0xd1ffffff 64bit pref] [ 53.963709] pci 0000:01:00.0: BAR 0: assigned [mem 0xf9000000-0xf9ffffff] [ 53.963714] pci 0000:01:00.0: BAR 6: assigned [mem 0xfa000000-0xfa07ffff pref] [ 53.963718] pci 0000:01:00.1: BAR 0: assigned [mem 0xfa080000-0xfa083fff] [ 53.963722] pci 0000:01:00.0: BAR 5: assigned [io 0xe000-0xe07f] [ 53.963739] pci 0000:01:00.0: no hotplug settings from platform [ 53.963748] pci 0000:01:00.1: no hotplug settings from platform [ 53.964075] nouveau: probe of 0000:01:00.0 failed with error -17 [ 53.965233] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 [ 53.966321] IP: [] nv84_fence_read+0x25/0x30 [nouveau] [ 53.967502] PGD 0 [ 53.968648] Oops: 0000 [#1] SMP [ 53.969759] Modules linked in: nls_iso8859_1 dm_crypt btrfs arc4 brcmsmac cordic brcmutil b43 xor snd_hda_codec_hdmi mac80211 cfg80211 ssb raid6_pq dell_wmi sparse_keymap intel_powerclamp coretemp kvm_intel dell_laptop dcdbas kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper dm_multipath ablk_helper cryptd scsi_dh uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev joydev media serio_raw intel_ips snd_hda_codec_idt snd_hda_codec_generic lpc_ich snd_hda_intel snd_seq_midi rfcomm snd_seq_midi_event bnep bcma snd_hda_controller snd_rawmidi bluetooth snd_hda_codec snd_hwdep 6lowpan_iphc snd_pcm snd_seq snd_seq_device snd_timer snd soundcore dell_smo8800 mei_me mac_hid mei parport_pc ppdev shpchp lp parport squashfs overlayfs [ 53.975225] uas usb_storage nls_utf8 isofs jfs xfs libcrc32c reiserfs dm_mirror dm_region_hash dm_log hid_generic usbhid hid nouveau i915 psmouse mxm_wmi ttm i2c_algo_bit ahci drm_kms_helper libahci r8169 drm mii wmi video [ 53.979472] CPU: 3 PID: 2121 Comm: Xorg Tainted: G W 3.16.0-23-generic #31-Ubuntu [ 53.980656] Hardware name: Dell Inc. Vostro 3500/ , BIOS A10 10/25/2010 [ 53.981861] task: ffff8800a651d180 ti: ffff88013f4d8000 task.ti: ffff88013f4d8000 [ 53.982779] snd_hda_intel 0000:01:00.1: Disabling MSI [ 53.982798] snd_hda_intel 0000:01:00.1: Handle VGA-switcheroo audio client [ 53.985621] RIP: 0010:[] [] nv84_fence_read+0x25/0x30 [nouveau] [ 53.986912] RSP: 0018:ffff88013f4dbcb0 EFLAGS: 00010202 [ 53.988144] RAX: 0000000000000000 RBX: ffff88000cb95700 RCX: 00000000000000a0 [ 53.989397] RDX: 0000000000000002 RSI: 0000000000000010 RDI: ffff8800a5ac66c0 [ 53.990864] RBP: ffff88013f4dbcb0 R08: 00000000000175e0 R09: ffff88000cb95700 [ 53.992149] R10: ffffffffc02dc36f R11: ffff88013f4dbdf0 R12: ffff88013f8e1c00 [ 53.993438] R13: ffff88013f8e1c00 R14: ffff8800a5ac66c0 R15: ffff88013f8e1c48 [ 53.994733] FS: 00007f8b9e3c39c0(0000) GS:ffff880147d80000(0000) knlGS:0000000000000000 [ 53.996042] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.997355] CR2: 0000000000000048 CR3: 00000000a6379000 CR4: 00000000000007e0 [ 53.998892] Stack: [ 54.000251] ffff88013f4dbce8 ffffffffc02db956 ffff88000cb95700 0000000000000000 [ 54.001655] 0000000000000000 0000000000000000 ffff8800a651d180 ffff88013f4dbd38 [ 54.003084] ffffffffc02dbff6 ffff8800a651d180 00000000000003e8 ffffffffc02dc399 [ 54.004521] Call Trace: [ 54.006018] [] nouveau_fence_update+0x66/0x90 [nouveau] [ 54.007507] [] nouveau_fence_wait+0xe6/0x1e0 [nouveau] [ 54.008975] [] ? nouveau_fence_new+0x69/0xb0 [nouveau] [ 54.010453] [] nouveau_channel_idle+0x6d/0x90 [nouveau] [ 54.011934] [] nouveau_abi16_ioctl_gpuobj_free+0x9e/0x180 [nouveau] [ 54.013429] [] drm_ioctl+0x1df/0x680 [drm] [ 54.014938] [] ? __do_page_fault+0x284/0x580 [ 54.016440] [] nouveau_drm_ioctl+0x65/0xa0 [nouveau] [ 54.017939] [] do_vfs_ioctl+0x2c8/0x4a0 [ 54.019431] [] SyS_ioctl+0x81/0xa0 [ 54.020928] [] system_call_fastpath+0x1a/0x1f [ 54.022427] Code: 84 00 00 00 00 00 66 66 66 66 90 55 48 8b 87 a8 00 00 00 48 89 e5 0f b7 b0 84 00 00 00 48 8b 47 08 48 8b 80 68 07 00 00 c1 e6 02 <48> 8b 78 48 e8 02 a5 ff ff 5d c3 66 66 66 66 90 55 48 89 e5 41 [ 54.026112] RIP [] nv84_fence_read+0x25/0x30 [nouveau] [ 54.027862] RSP [ 54.029537] CR2: 0000000000000048 [ 54.031271] ---[ end trace 4e49b2fc5def81ef ]--- [ 54.770975] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input20 [ 54.772812] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input21 [ 54.775121] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input22 [ 54.777417] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input23