The problem just happened again. I am enclosing below information obtained from dmesg.
[54069.332038] CPU3 is up [54069.335595] ACPI: Waking up from system sleep state S3 [54070.521751] ehci-pci 0000:00:1d.0: System wakeup disabled by ACPI [54070.522779] xhci_hcd 0000:00:14.0: System wakeup disabled by ACPI [54070.522842] PM: noirq resume of devices complete after 17.080 msecs [54070.545697] PM: early resume of devices complete after 22.808 msecs [54070.545796] usb usb1: root hub lost power or was reset [54070.545798] usb usb2: root hub lost power or was reset [54070.547460] rtc_cmos 00:01: System wakeup disabled by ACPI [54070.561611] sd 3:0:0:0: [sda] Starting disk [54070.730554] cfg80211: Calling CRDA to update world regulatory domain [54070.781847] usb 3-1: reset high-speed USB device number 2 using ehci-pci [54070.881907] ata4: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [54070.884034] ata4.00: failed to get NCQ Send/Recv Log Emask 0x1 [54070.884415] ata4.00: failed to get NCQ Send/Recv Log Emask 0x1 [54070.884447] ata4.00: configured for UDMA/133 [54071.050074] usb 1-5: reset high-speed USB device number 4 using xhci_hcd [54071.288028] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800d8fb2f60 [54071.288029] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800d8fb2f00 [54071.402440] usb 1-3: reset full-speed USB device number 2 using xhci_hcd [54071.531804] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8802149b9e00 [54071.531806] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8802149b9e90 [54071.531806] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8802149b9e48 [54071.531807] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880212979948 [54071.531808] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880212979900 [54071.531808] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880212979288 [54071.531809] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880212979240 [54071.642640] usb 1-4: reset full-speed USB device number 3 using xhci_hcd [54071.771282] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800d90cd3c0 [54071.771283] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800d90cd408 [54071.771291] usb 1-4: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes [54071.776773] PM: resume of devices complete after 1230.077 msecs [54071.777403] PM: Finishing wakeup. [54071.777404] Restarting tasks ... [54071.777731] pci_bus 0000:01: Allocating resources [54071.777846] pci_bus 0000:02: Allocating resources [54071.777890] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.779421] pci_bus 0000:01: Allocating resources [54071.779540] pci_bus 0000:02: Allocating resources [54071.779584] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.779658] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.779754] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.779835] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.780169] pci_bus 0000:01: Allocating resources [54071.780187] pci_bus 0000:02: Allocating resources [54071.780228] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.780893] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.780960] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.781056] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.781071] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.781088] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [54071.781106] Bluetooth: hci0: BCM: patching hci_ver=06 hci_rev=1000 lmp_ver=06 lmp_subver=220e [54071.782857] done. [54071.785656] cfg80211: World regulatory domain updated: [54071.785660] cfg80211: DFS Master region: unset [54071.785661] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time) [54071.785664] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [54071.785666] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [54071.785668] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A) [54071.785670] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [54071.785671] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [54072.397622] Bluetooth: hci0: BCM: firmware hci_ver=06 hci_rev=1624 lmp_ver=06 lmp_subver=220e [54086.545625] hid-generic 0005:046D:B00E.0009: unknown main item tag 0x0 [54086.584968] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:11/0005:046D:B00E.0009/input/input29 [54086.585178] hid-generic 0005:046D:B00E.0009: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c [55401.421090] ------------[ cut here ]------------ [55401.421112] WARNING: CPU: 1 PID: 366 at /build/buildd/linux-3.19.0/net/wireless/sme.c:800 cfg80211_roamed+0x91/0xa0 [cfg80211]() [55401.421113] Modules linked in: btusb cpuid mmc_block ses enclosure uas usb_storage hid_generic hidp binfmt_misc rfcomm bnep nls_iso8859_1 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core bluetooth v4l2_common videodev usbhid media dell_led joydev dell_wmi hid_multitouch sparse_keymap dell_laptop dcdbas intel_rapl iosf_mbi x86_pkg_temp_thermal snd_hda_codec_realtek i915_bpo intel_powerclamp coretemp wl(POE) snd_hda_codec_generic intel_ips kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd cfg80211 snd_hda_intel rtsx_pci_ms snd_hda_controller serio_raw snd_hda_codec memstick lpc_ich snd_hwdep snd_seq_midi snd_soc_rt286 snd_seq_midi_event snd_soc_core snd_rawmidi snd_compress snd_pcm_dmaengine i915 snd_pcm snd_seq [55401.421136] i2c_hid snd_seq_device hid drm_kms_helper drm snd_timer mei_me snd mei shpchp soundcore i2c_algo_bit wmi soc_button_array snd_soc_sst_acpi i2c_designware_platform int3403_thermal i2c_designware_core dw_dmac video 8250_dw dw_dmac_core int3400_thermal int3402_thermal acpi_thermal_rel spi_pxa2xx_platform processor_thermal_device acpi_pad mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc ahci psmouse libahci rtsx_pci sdhci_acpi sdhci [last unloaded: btusb] [55401.421157] CPU: 1 PID: 366 Comm: wl_event_handle Tainted: P W OE 3.19.0-18-generic #18-Ubuntu [55401.421158] Hardware name: Dell Inc. XPS 13 9343/0310JH, BIOS A03 03/25/2015 [55401.421159] ffffffffc0528a78 ffff8800d9ffbda8 ffffffff817c27cd 0000000000000007 [55401.421160] 0000000000000000 ffff8800d9ffbde8 ffffffff8107593a ffff8800da2a0c78 [55401.421162] ffff880214639000 ffff88017adac9c0 0000000000000098 ffff88017adacd80 [55401.421164] Call Trace: [55401.421169] [<ffffffff817c27cd>] dump_stack+0x45/0x57 [55401.421172] [<ffffffff8107593a>] warn_slowpath_common+0x8a/0xc0 [55401.421173] [<ffffffff81075a2a>] warn_slowpath_null+0x1a/0x20 [55401.421181] [<ffffffffc0504aa1>] cfg80211_roamed+0x91/0xa0 [cfg80211] [55401.421209] [<ffffffffc09bf9fb>] wl_notify_roaming_status+0xcb/0x150 [wl] [55401.421232] [<ffffffffc09bc75a>] wl_event_handler+0x6a/0x230 [wl] [55401.421255] [<ffffffffc09bc6f0>] ? wl_free_wdev.isra.23+0x80/0x80 [wl] [55401.421258] [<ffffffff81094739>] kthread+0xc9/0xe0 [55401.421260] [<ffffffff81094670>] ? kthread_create_on_node+0x1c0/0x1c0 [55401.421263] [<ffffffff817c9858>] ret_from_fork+0x58/0x90 [55401.421265] [<ffffffff81094670>] ? kthread_create_on_node+0x1c0/0x1c0 [55401.421267] ---[ end trace 65c9a7c064322ff3 ]--- [57279.096393] usb 2-2: new SuperSpeed USB device number 5 using xhci_hcd [57279.113028] usb 2-2: New USB device found, idVendor=1058, idProduct=0820 [57279.113032] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=5 [57279.113035] usb 2-2: Product: My Passport 0820 [57279.113037] usb 2-2: Manufacturer: Western Digital [57279.113038] usb 2-2: SerialNumber: 575836314142334E30303337 [57279.113655] usb-storage 2-2:1.0: USB Mass Storage device detected [57279.113850] scsi host7: usb-storage 2-2:1.0 [57280.113371] scsi 7:0:0:0: Direct-Access WD My Passport 0820 1007 PQ: 0 ANSI: 6 [57280.113526] scsi 7:0:0:1: Enclosure WD SES Device 1007 PQ: 0 ANSI: 6 [57280.114364] sd 7:0:0:0: Attached scsi generic sg1 type 0 [57280.114471] ses 7:0:0:1: Attached Enclosure device [57280.114540] ses 7:0:0:1: Attached scsi generic sg2 type 13 [57286.175048] sd 7:0:0:0: [sdb] 3906963456 512-byte logical blocks: (2.00 TB/1.81 TiB) [57286.175450] sd 7:0:0:0: [sdb] Write Protect is off [57286.175452] sd 7:0:0:0: [sdb] Mode Sense: 47 00 10 08 [57286.175777] sd 7:0:0:0: [sdb] No Caching mode page found [57286.175779] sd 7:0:0:0: [sdb] Assuming drive cache: write through [57286.191620] sdb: sdb1 [57286.192832] sd 7:0:0:0: [sdb] Attached SCSI disk [57286.492531] EXT4-fs (sdb1): warning: mounting fs with errors, running e2fsck is recommended [57286.521799] EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null) [57586.933482] EXT4-fs (sdb1): error count since last fsck: 209 [57586.933485] EXT4-fs (sdb1): initial error at time 1398807691: ext4_mb_generate_buddy:756 [57586.933487] EXT4-fs (sdb1): last error at time 1432231433: ext4_mb_generate_buddy:757 [62085.839945] cfg80211: Calling CRDA to update world regulatory domain [62085.873568] cfg80211: World regulatory domain updated: [62085.873571] cfg80211: DFS Master region: unset [62085.873573] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time) [62085.873575] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [62085.873577] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [62085.873579] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A) [62085.873580] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [62085.873582] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [62185.785646] cfg80211: Calling CRDA to update world regulatory domain [62185.788212] cfg80211: World regulatory domain updated: [62185.788215] cfg80211: DFS Master region: unset [62185.788217] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time) [62185.788219] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [62185.788221] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [62185.788223] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A) [62185.788224] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [62185.788226] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [66297.170508] ------------[ cut here ]------------ [66297.170529] WARNING: CPU: 2 PID: 366 at /build/buildd/linux-3.19.0/net/wireless/sme.c:800 cfg80211_roamed+0x91/0xa0 [cfg80211]() [66297.170530] Modules linked in: btusb cpuid mmc_block ses enclosure uas usb_storage hid_generic hidp binfmt_misc rfcomm bnep nls_iso8859_1 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core bluetooth v4l2_common videodev usbhid media dell_led joydev dell_wmi hid_multitouch sparse_keymap dell_laptop dcdbas intel_rapl iosf_mbi x86_pkg_temp_thermal snd_hda_codec_realtek i915_bpo intel_powerclamp coretemp wl(POE) snd_hda_codec_generic intel_ips kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd cfg80211 snd_hda_intel rtsx_pci_ms snd_hda_controller serio_raw snd_hda_codec memstick lpc_ich snd_hwdep snd_seq_midi snd_soc_rt286 snd_seq_midi_event snd_soc_core snd_rawmidi snd_compress snd_pcm_dmaengine i915 snd_pcm snd_seq [66297.170552] i2c_hid snd_seq_device hid drm_kms_helper drm snd_timer mei_me snd mei shpchp soundcore i2c_algo_bit wmi soc_button_array snd_soc_sst_acpi i2c_designware_platform int3403_thermal i2c_designware_core dw_dmac video 8250_dw dw_dmac_core int3400_thermal int3402_thermal acpi_thermal_rel spi_pxa2xx_platform processor_thermal_device acpi_pad mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc ahci psmouse libahci rtsx_pci sdhci_acpi sdhci [last unloaded: btusb] [66297.170571] CPU: 2 PID: 366 Comm: wl_event_handle Tainted: P W OE 3.19.0-18-generic #18-Ubuntu [66297.170572] Hardware name: Dell Inc. XPS 13 9343/0310JH, BIOS A03 03/25/2015 [66297.170573] ffffffffc0528a78 ffff8800d9ffbda8 ffffffff817c27cd 0000000000000007 [66297.170574] 0000000000000000 ffff8800d9ffbde8 ffffffff8107593a ffff8800da2a0c78 [66297.170576] ffff880214639000 ffff8801fd72ba80 0000000000000098 ffff8801fd72bcc0 [66297.170578] Call Trace: [66297.170582] [<ffffffff817c27cd>] dump_stack+0x45/0x57 [66297.170585] [<ffffffff8107593a>] warn_slowpath_common+0x8a/0xc0 [66297.170586] [<ffffffff81075a2a>] warn_slowpath_null+0x1a/0x20 [66297.170593] [<ffffffffc0504aa1>] cfg80211_roamed+0x91/0xa0 [cfg80211] [66297.170619] [<ffffffffc09bf9fb>] wl_notify_roaming_status+0xcb/0x150 [wl] [66297.170640] [<ffffffffc09bc75a>] wl_event_handler+0x6a/0x230 [wl] [66297.170660] [<ffffffffc09bc6f0>] ? wl_free_wdev.isra.23+0x80/0x80 [wl] [66297.170662] [<ffffffff81094739>] kthread+0xc9/0xe0 [66297.170665] [<ffffffff81094670>] ? kthread_create_on_node+0x1c0/0x1c0 [66297.170667] [<ffffffff817c9858>] ret_from_fork+0x58/0x90 [66297.170669] [<ffffffff81094670>] ? kthread_create_on_node+0x1c0/0x1c0 [66297.170670] ---[ end trace 65c9a7c064322ff4 ]--- [71669.005535] usb 2-2: USB disconnect, device number 5 [71685.823238] cfg80211: Calling CRDA to update world regulatory domain [71685.829498] cfg80211: World regulatory domain updated: [71685.829502] cfg80211: DFS Master region: unset [71685.829503] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time) [71685.829506] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [71685.829508] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [71685.829510] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A) [71685.829512] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [71685.829514] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [71685.831602] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [71686.257904] PM: Syncing filesystems ... done. [71686.274884] PM: Preparing system for mem sleep [71686.275051] Freezing user space processes ... (elapsed 0.002 seconds) done. [71686.278046] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [71686.279261] PM: Entering mem sleep [71686.279282] Suspending console(s) (use no_console_suspend to debug) [71686.280730] sd 3:0:0:0: [sda] Synchronizing SCSI cache [71686.282784] sd 3:0:0:0: [sda] Stopping disk [71687.300421] [drm:stop_ring [i915]] *ERROR* render ring : timed out trying to stop ring [71687.308453] PM: suspend of devices complete after 1028.097 msecs [71687.348442] PM: late suspend of devices complete after 39.952 msecs [71687.348916] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI [71687.349021] xhci_hcd 0000:00:14.0: System wakeup enabled by ACPI [71687.364601] PM: noirq suspend of devices complete after 16.143 msecs [71687.364875] ACPI: Preparing to enter system sleep state S3 [71687.384490] PM: Saving platform NVS memory [71687.384507] Disabling non-boot CPUs ... [71687.384535] intel_pstate CPU 1 exiting [71687.385670] kvm: disabling virtualization on CPU1 [71687.385677] smpboot: CPU 1 is now offline [71687.385983] intel_pstate CPU 2 exiting [71687.387119] kvm: disabling virtualization on CPU2 [71687.387126] smpboot: CPU 2 is now offline [71687.387405] intel_pstate CPU 3 exiting [71687.387493] Broke affinity for irq 21 [71687.387498] Broke affinity for irq 43 [71687.387500] Broke affinity for irq 44 [71687.387502] Broke affinity for irq 46 [71687.388507] kvm: disabling virtualization on CPU3 [71687.388518] smpboot: CPU 3 is now offline [71687.390177] ACPI: Low-level resume complete [71687.390228] PM: Restoring platform NVS memory [71687.390641] Enabling non-boot CPUs ... [71687.390676] x86: Booting SMP configuration: [71687.390676] smpboot: Booting Node 0 Processor 1 APIC 0x2 [71687.402691] kvm: enabling virtualization on CPU1 [71687.404922] CPU1 is up [71687.404940] smpboot: Booting Node 0 Processor 2 APIC 0x1 [71687.416935] kvm: enabling virtualization on CPU2 [71687.419136] CPU2 is up [71687.419149] smpboot: Booting Node 0 Processor 3 APIC 0x3 [71687.431141] kvm: enabling virtualization on CPU3 [71687.433338] CPU3 is up [71687.436915] ACPI: Waking up from system sleep state S3 [71688.623573] ehci-pci 0000:00:1d.0: System wakeup disabled by ACPI [71688.623679] xhci_hcd 0000:00:14.0: System wakeup disabled by ACPI [71688.623733] PM: noirq resume of devices complete after 16.431 msecs [71688.647333] PM: early resume of devices complete after 23.528 msecs [71688.647488] usb usb1: root hub lost power or was reset [71688.647491] usb usb2: root hub lost power or was reset [71688.649169] rtc_cmos 00:01: System wakeup disabled by ACPI [71688.659974] sd 3:0:0:0: [sda] Starting disk [71688.832725] cfg80211: Calling CRDA to update world regulatory domain [71688.875387] usb 3-1: reset high-speed USB device number 2 using ehci-pci [71688.967367] ata4: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [71688.969288] ata4.00: failed to get NCQ Send/Recv Log Emask 0x1 [71688.969482] ata4.00: failed to get NCQ Send/Recv Log Emask 0x1 [71688.969514] ata4.00: configured for UDMA/133 [71689.151686] usb 1-3: reset full-speed USB device number 2 using xhci_hcd [71689.281035] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8802149b9e00 [71689.281036] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8802149b9e90 [71689.281037] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8802149b9e48 [71689.281038] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880212979948 [71689.281038] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880212979900 [71689.281039] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880212979288 [71689.281040] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880212979240 [71689.391896] usb 1-4: reset full-speed USB device number 3 using xhci_hcd [71689.520534] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800d90cd3c0 [71689.520535] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800d90cd408 [71689.520542] usb 1-4: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes [71689.632075] usb 1-5: reset high-speed USB device number 4 using xhci_hcd [71689.869948] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800d8fb2f60 [71689.869949] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800d8fb2f00 [71689.912810] PM: resume of devices complete after 1264.439 msecs [71689.913180] ------------[ cut here ]------------ [71689.913183] WARNING: CPU: 2 PID: 11880 at /build/buildd/linux-3.19.0/drivers/base/firmware_class.c:1126 _request_firmware+0x72e/0xbd0() [71689.913208] Modules linked in: btusb cpuid mmc_block ses enclosure uas usb_storage hid_generic hidp binfmt_misc rfcomm bnep nls_iso8859_1 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core bluetooth v4l2_common videodev usbhid media dell_led joydev dell_wmi hid_multitouch sparse_keymap dell_laptop dcdbas intel_rapl iosf_mbi x86_pkg_temp_thermal snd_hda_codec_realtek i915_bpo intel_powerclamp coretemp wl(POE) snd_hda_codec_generic intel_ips kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd cfg80211 snd_hda_intel rtsx_pci_ms snd_hda_controller serio_raw snd_hda_codec memstick lpc_ich snd_hwdep snd_seq_midi snd_soc_rt286 snd_seq_midi_event snd_soc_core snd_rawmidi snd_compress snd_pcm_dmaengine i915 snd_pcm snd_seq [71689.913221] i2c_hid snd_seq_device hid drm_kms_helper drm snd_timer mei_me snd mei shpchp soundcore i2c_algo_bit wmi soc_button_array snd_soc_sst_acpi i2c_designware_platform int3403_thermal i2c_designware_core dw_dmac video 8250_dw dw_dmac_core int3400_thermal int3402_thermal acpi_thermal_rel spi_pxa2xx_platform processor_thermal_device acpi_pad mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc ahci psmouse libahci rtsx_pci sdhci_acpi sdhci [last unloaded: btusb] [71689.913223] CPU: 2 PID: 11880 Comm: kworker/u9:0 Tainted: P W OE 3.19.0-18-generic #18-Ubuntu [71689.913224] Hardware name: Dell Inc. XPS 13 9343/0310JH, BIOS A03 03/25/2015 [71689.913232] Workqueue: hci0 hci_power_on [bluetooth] [71689.913233] ffffffff81b10ca0 ffff8801240cfb78 ffffffff817c27cd ffffffff81c54db8 [71689.913234] 0000000000000000 ffff8801240cfbb8 ffffffff8107593a ffffffff815196ca [71689.913235] ffff8801240cfcd0 ffff88009e34ac40 ffff8800c4b34480 00000000fffffff5 [71689.913235] Call Trace: [71689.913239] [<ffffffff817c27cd>] dump_stack+0x45/0x57 [71689.913241] [<ffffffff8107593a>] warn_slowpath_common+0x8a/0xc0 [71689.913243] [<ffffffff815196ca>] ? _request_firmware+0x5a/0xbd0 [71689.913244] [<ffffffff81075a2a>] warn_slowpath_null+0x1a/0x20 [71689.913245] [<ffffffff81519d9e>] _request_firmware+0x72e/0xbd0 [71689.913246] [<ffffffff8151a275>] request_firmware+0x35/0x50 [71689.913247] [<ffffffffc07f1869>] btusb_setup_bcm_patchram+0x89/0x570 [btusb] [71689.913249] [<ffffffff81510f46>] ? rpm_idle+0xd6/0x230 [71689.913254] [<ffffffffc0e6a561>] hci_dev_do_open+0xe1/0xa90 [bluetooth] [71689.913259] [<ffffffffc0e6b6f0>] hci_power_on+0x40/0x200 [bluetooth] [71689.913263] [<ffffffff8108eb58>] process_one_work+0x158/0x430 [71689.913264] [<ffffffff8108f69b>] worker_thread+0x5b/0x530 [71689.913266] [<ffffffff8108f640>] ? rescuer_thread+0x3a0/0x3a0 [71689.913269] [<ffffffff81094739>] kthread+0xc9/0xe0 [71689.913271] [<ffffffff81094670>] ? kthread_create_on_node+0x1c0/0x1c0 [71689.913274] [<ffffffff817c9858>] ret_from_fork+0x58/0x90 [71689.913276] [<ffffffff81094670>] ? kthread_create_on_node+0x1c0/0x1c0 [71689.913277] ---[ end trace 65c9a7c064322ff5 ]--- [71689.913279] bluetooth hci0: firmware: brcm/BCM20702A0-0a5c-216f.hcd will not be loaded [71689.913281] Bluetooth: hci0: BCM: patch brcm/BCM20702A0-0a5c-216f.hcd not found [71689.913431] PM: Finishing wakeup. [71689.913432] Restarting tasks ... [71689.913842] pci_bus 0000:01: Allocating resources [71689.913960] pci_bus 0000:02: Allocating resources [71689.914005] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.914240] pci_bus 0000:01: Allocating resources [71689.914359] pci_bus 0000:02: Allocating resources [71689.914405] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.914536] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.914659] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.914782] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.915157] pci_bus 0000:01: Allocating resources [71689.915281] pci_bus 0000:02: Allocating resources [71689.915326] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.916397] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.916502] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.916639] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.916669] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.916693] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [71689.923762] cfg80211: World regulatory domain updated: [71689.923765] cfg80211: DFS Master region: unset [71689.923766] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time) [71689.923768] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [71689.923769] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [71689.923770] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A) [71689.923771] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [71689.923772] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [71689.924176] done. [71690.224385] systemd[1]: Unit suspend.target is bound to inactive unit systemd-suspend.service. Stopping, too. [71710.852638] hid-generic 0005:046D:B00E.000A: unknown main item tag 0x0 [71711.232246] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:12/0005:046D:B00E.000A/input/input32 [71711.232553] hid-generic 0005:046D:B00E.000A: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1454450 Title: Bluetooth mouse laggy and erratic To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1454450/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
