I have been using it for a while now and I manage to reproduce the problem with the mainline kernel : uname ouput: Linux DEM-RSZABO-U20 5.7.0-050700rc7-generic #202005242331 SMP Sun May 24 23:33:19 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
dmesg output: [ 172.040868] firewire_ohci 0000:27:00.0: enabling device (0000 -> 0002) [ 172.045220] usb 7-1.4.2: New USB device found, idVendor=0b0e, idProduct=1113, bcdDevice= 3.04 [ 172.045221] usb 7-1.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 172.045222] usb 7-1.4.2: Product: Jabra Engage 75 [ 172.045223] usb 7-1.4.2: Manufacturer: GN Audio A/S [ 172.045224] usb 7-1.4.2: SerialNumber: 033DCCC2D80F [ 172.098317] firewire_ohci 0000:27:00.0: isochronous cycle inconsistent [ 172.098355] firewire_ohci 0000:27:00.0: added OHCI v1.10 device as card 1, 8 IR + 8 IT contexts, quirks 0x0, physUB [ 172.216832] input: GN Audio A/S Jabra Engage 75 as /devices/pci0000:00/0000:00:1c.0/0000:04:00.0/0000:05:01.0/0000:07:00.0/0000:08:02.0/0000:0b:00.0/usb7/7-1/7-1.4/7-1.4.2/7-1.4.2:1.3/0003:0B0E:1113.0013/input/input52 [ 172.274621] jabra 0003:0B0E:1113.0013: input,hiddev2,hidraw7: USB HID v1.11 Device [GN Audio A/S Jabra Engage 75] on usb-0000:0b:00.0-1.4.2/input3 [ 172.518897] igb 0000:0c:00.0 ens1: igb: ens1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX [ 172.618312] firewire_core 0000:27:00.0: created device fw0: GUID 000a2702007351d1, S800 [ 172.625488] firewire_core 0000:27:00.0: created device fw1: GUID 00022e0200000007, S400 [ 172.625489] firewire_core 0000:27:00.0: phy config: new root=ffc0, gap_count=5 [ 172.626660] IPv6: ADDRCONF(NETDEV_CHANGE): ens1: link becomes ready [ 172.739267] thunderbolt 0-1: new device found, vendor=0x5a device=0xde21 [ 172.739268] thunderbolt 0-1: Other World Computing Thunderbolt 3 Dock [ 173.131591] thunderbolt 0-101: new device found, vendor=0x1e device=0x1 [ 173.131592] thunderbolt 0-101: LG Electronics 34UM95 [ 173.571435] thunderbolt 0-10101: new device found, vendor=0x1 device=0x8004 [ 173.571436] thunderbolt 0-10101: Apple, Inc. Thunderbolt to FireWire Adapter [ 178.864484] ACPI: button: The lid device is not compliant to SW_LID. [ 182.938764] logitech-hidpp-device 0003:046D:406D.000E: HID++ 4.5 device connected. [ 183.180829] logitech-hidpp-device 0003:046D:406D.000E: multiplier = 8 [ 484.390178] INFO: task pulseaudio:2213 blocked for more than 120 seconds. [ 484.390181] Tainted: P OE 5.7.0-050700rc7-generic #202005242331 [ 484.390182] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 484.390182] pulseaudio D 0 2213 2190 0x00004120 [ 484.390184] Call Trace: [ 484.390188] __schedule+0x2dd/0x780 [ 484.390190] ? dma_pte_clear_level+0x148/0x1a0 [ 484.390191] schedule+0x55/0xc0 [ 484.390192] schedule_timeout+0x207/0x2f0 [ 484.390194] ? at_context_transmit+0x66/0x1a0 [firewire_ohci] [ 484.390195] wait_for_completion+0x94/0x100 [ 484.390198] fw_run_transaction+0xdc/0x110 [firewire_core] [ 484.390200] ? fw_core_handle_bus_reset+0x470/0x470 [firewire_core] [ 484.390202] ? free_iova_fast+0x18/0x30 [ 484.390204] ? close_transaction+0x110/0x110 [firewire_core] [ 484.390205] ? free_one_page+0xb5/0x490 [ 484.390206] ? transmit_phy_packet_callback+0x20/0x20 [firewire_core] [ 484.390209] snd_fw_transaction+0xbc/0x110 [snd_firewire_lib] [ 484.390210] ? avc_general_get_plug_info+0x100/0x100 [snd_firewire_lib] [ 484.390212] pcr_modify+0x65/0x100 [snd_firewire_lib] [ 484.390213] cmp_connection_break+0x37/0x50 [snd_firewire_lib] [ 484.390215] snd_oxfw_stream_start_duplex+0x1f0/0x2e0 [snd_oxfw] [ 484.390217] ? wait_woken+0x80/0x80 [ 484.390218] pcm_capture_prepare+0x26/0x50 [snd_oxfw] [ 484.390221] snd_pcm_do_prepare+0x2c/0x50 [snd_pcm] [ 484.390223] snd_pcm_action_single+0x3c/0x80 [snd_pcm] [ 484.390225] snd_pcm_action_nonatomic+0x6e/0x80 [snd_pcm] [ 484.390226] snd_pcm_prepare+0x6a/0x90 [snd_pcm] [ 484.390228] snd_pcm_common_ioctl+0xb3b/0xed0 [snd_pcm] [ 484.390230] ? vm_mmap_pgoff+0xe6/0x120 [ 484.390232] snd_pcm_ioctl+0x27/0x40 [snd_pcm] [ 484.390233] ksys_ioctl+0x9d/0xd0 [ 484.390235] __x64_sys_ioctl+0x1a/0x20 [ 484.390236] do_syscall_64+0x57/0x1d0 [ 484.390237] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 484.390238] RIP: 0033:0x7fde5b6e037b [ 484.390241] Code: Bad RIP value. [ 484.390241] RSP: 002b:00007ffd5367a8f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 484.390242] RAX: ffffffffffffffda RBX: 0000561a0e3352f0 RCX: 00007fde5b6e037b [ 484.390243] RDX: 0000000000000001 RSI: 0000000000004140 RDI: 0000000000000047 [ 484.390243] RBP: 0000561a0e348840 R08: 0000000000000000 R09: 0000000000001000 [ 484.390243] R10: 0000000000000004 R11: 0000000000000206 R12: 00000000ffffffda [ 484.390244] R13: 00007ffd5367ad20 R14: 0000000000000000 R15: 00007ffd5367aab0 [ 484.390287] INFO: task skypeforlinux:8637 blocked for more than 120 seconds. [ 484.390287] Tainted: P OE 5.7.0-050700rc7-generic #202005242331 [ 484.390288] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 484.390289] skypeforlinux D 0 8637 2962 0x00000000 [ 484.390289] Call Trace: [ 484.390291] __schedule+0x2dd/0x780 [ 484.390292] schedule+0x55/0xc0 [ 484.390293] schedule_preempt_disabled+0xe/0x10 [ 484.390293] __mutex_lock.isra.0+0x182/0x4f0 [ 484.390294] __mutex_lock_slowpath+0x13/0x20 [ 484.390295] mutex_lock+0x2e/0x40 [ 484.390296] pcm_open+0x1a6/0x2d0 [snd_oxfw] [ 484.390299] snd_pcm_open_substream+0x94/0x340 [snd_pcm] [ 484.390301] snd_pcm_open+0xee/0x230 [snd_pcm] [ 484.390302] ? wake_up_q+0xa0/0xa0 [ 484.390304] snd_pcm_playback_open+0x42/0x70 [snd_pcm] [ 484.390307] snd_open+0xb4/0x1a0 [snd] [ 484.390308] chrdev_open+0xd3/0x1c0 [ 484.390309] ? cdev_default_release+0x20/0x20 [ 484.390310] do_dentry_open+0x143/0x3a0 [ 484.390311] vfs_open+0x2d/0x30 [ 484.390312] path_openat+0xb1c/0x10f0 [ 484.390313] do_filp_open+0x91/0x100 [ 484.390315] ? __alloc_fd+0x46/0x150 [ 484.390316] do_sys_openat2+0x210/0x2d0 [ 484.390316] do_sys_open+0x46/0x80 [ 484.390317] __x64_sys_openat+0x20/0x30 [ 484.390318] do_syscall_64+0x57/0x1d0 [ 484.390320] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 484.390320] RIP: 0033:0x7f31f1973d94 [ 484.390321] Code: Bad RIP value. [ 484.390321] RSP: 002b:00007f31bf7f9eb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 [ 484.390322] RAX: ffffffffffffffda RBX: 0000000000080802 RCX: 00007f31f1973d94 [ 484.390322] RDX: 0000000000080802 RSI: 00007f31bf7fa070 RDI: 00000000ffffff9c [ 484.390323] RBP: 00007f31bf7fa070 R08: 0000000000000000 R09: 0000000000000011 [ 484.390323] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080802 [ 484.390324] R13: 0000000000000004 R14: 0000000000000006 R15: 00007f31bf7fa070 [ 489.501821] SGI_video_sync[10387]: segfault at e6 ip 00005569798bef92 sp 00007fd99d7f8680 error 6 in teams[556976ddb000+4bf6000] [ 489.501825] Code: e8 43 00 00 00 4c 89 f7 e8 db 01 00 00 41 8b 46 10 41 8b 4e 18 c1 e0 0c 25 00 f0 0f 00 c1 e1 14 81 e1 00 00 f0 0f 09 c1 09 d9 <c6> 01 00 81 e3 ff 0f 00 00 c6 03 00 bf 01 00 00 00 e8 38 d0 10 02 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1880835 Title: pulse audio hangs in kernel call Status in linux package in Ubuntu: Incomplete Bug description: there is no audio device accessible any more and pulse-audio process can not be terminated in kernel log there is such a output: This makes the complete audio unstable in the laptop. I think it is started to happen when I installed Nvidia driver and there is an external monitor attached with DP audio device. [ 364.150644] INFO: task pulseaudio:2183 blocked for more than 120 seconds. [ 364.150646] Tainted: P OE 5.4.0-31-generic #35-Ubuntu [ 364.150647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 364.150647] pulseaudio D 0 2183 2175 0x00004120 [ 364.150649] Call Trace: [ 364.150653] __schedule+0x2e3/0x740 [ 364.150655] ? dma_pte_clear_level+0x142/0x190 [ 364.150655] schedule+0x42/0xb0 [ 364.150656] schedule_timeout+0x203/0x2f0 [ 364.150657] wait_for_completion+0xb1/0x120 [ 364.150659] ? wake_up_q+0x70/0x70 [ 364.150663] fw_run_transaction+0xdc/0x110 [firewire_core] [ 364.150665] ? fw_core_handle_bus_reset+0x440/0x440 [firewire_core] [ 364.150666] ? free_iova_fast+0x18/0x30 [ 364.150667] ? close_transaction+0x110/0x110 [firewire_core] [ 364.150668] ? intel_unmap+0xd9/0x1c0 [ 364.150670] ? transmit_phy_packet_callback+0x20/0x20 [firewire_core] [ 364.150671] snd_fw_transaction+0xbc/0x110 [snd_firewire_lib] [ 364.150673] ? avc_general_get_plug_info+0x100/0x100 [snd_firewire_lib] [ 364.150674] pcr_modify+0x65/0x100 [snd_firewire_lib] [ 364.150675] cmp_connection_break+0x37/0x50 [snd_firewire_lib] [ 364.150677] snd_oxfw_stream_start_duplex+0x1ee/0x2e0 [snd_oxfw] [ 364.150678] ? wait_woken+0x80/0x80 [ 364.150679] pcm_capture_prepare+0x26/0x50 [snd_oxfw] [ 364.150682] snd_pcm_do_prepare+0x1e/0x30 [snd_pcm] [ 364.150684] snd_pcm_action_single+0x3c/0x80 [snd_pcm] [ 364.150686] snd_pcm_action_nonatomic+0x6e/0x80 [snd_pcm] [ 364.150687] snd_pcm_prepare+0x6a/0x90 [snd_pcm] [ 364.150689] snd_pcm_common_ioctl+0x28c/0xc00 [snd_pcm] [ 364.150691] snd_pcm_ioctl+0x27/0x40 [snd_pcm] [ 364.150692] do_vfs_ioctl+0x407/0x670 [ 364.150694] ? __secure_computing+0x42/0xe0 [ 364.150694] ksys_ioctl+0x67/0x90 [ 364.150695] __x64_sys_ioctl+0x1a/0x20 [ 364.150697] do_syscall_64+0x57/0x190 [ 364.150698] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 364.150699] RIP: 0033:0x7f0bbfa1a37b [ 364.150701] Code: Bad RIP value. [ 364.150701] RSP: 002b:00007ffed915d308 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 364.150702] RAX: ffffffffffffffda RBX: 00005607c7b63de0 RCX: 00007f0bbfa1a37b [ 364.150703] RDX: 0000000000000000 RSI: 0000000000004140 RDI: 000000000000006e [ 364.150703] RBP: 00005607c7b63bb0 R08: 0000000000000000 R09: 0000000000001000 [ 364.150703] R10: 0000000000000004 R11: 0000000000000202 R12: 00005607c7b63de0 [ 364.150704] R13: 00007ffed915d6f0 R14: 0000000000000000 R15: 00007ffed915d480 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-31-generic 5.4.0-31.35 ProcVersionSignature: Ubuntu 5.4.0-31.35-generic 5.4.34 Uname: Linux 5.4.0-31-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed May 27 10:07:13 2020 InstallationDate: Installed on 2020-02-22 (94 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200220) MachineType: Dell Inc. Precision 7540 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-31-generic root=UUID=7a5890f6-2724-480a-8fa7-778d07cd929d ro quiet splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Daemon not responding. RelatedPackageVersions: linux-restricted-modules-5.4.0-31-generic N/A linux-backports-modules-5.4.0-31-generic N/A linux-firmware 1.187 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/12/2020 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.8.2 dmi.board.name: 0T2FXT dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.8.2:bd03/12/2020:svnDellInc.:pnPrecision7540:pvr:rvnDellInc.:rn0T2FXT:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Precision dmi.product.name: Precision 7540 dmi.product.sku: 0926 dmi.sys.vendor: Dell Inc. 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