WARNING: CPU: 1 PID: 54 at /build/linux-qOmAV7/linux-3.19.0/sound/pci/hda/hda_i915.c:115 snd_hdac_i915_register_notifier+0x35/0x40 [snd_hda_intel]()

[trombetta danielle]

I have found this warning in dmesg at each start, even if sound seems to work properly :

[ 11.127798] sound hdaudioC0D0: autoconfig: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
[ 11.127805] sound hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 11.127808] sound hdaudioC0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
[ 11.127811] sound hdaudioC0D0: mono: mono_out=0x0
[ 11.127813] sound hdaudioC0D0: inputs:
[ 11.127817] sound hdaudioC0D0: Mic=0x19
[ 11.127820] sound hdaudioC0D0: Internal Mic=0x12
[ 11.155157] intel_soc_dts_thermal: request_threaded_irq ret -22
[ 11.170699] intel_soc_dts_thermal: request_threaded_irq ret -22
[ 11.190674] intel_rapl: Found RAPL domain package
[ 11.190680] intel_rapl: Found RAPL domain core
[ 11.324236] ------------[ cut here ]------------
[ 11.324247] WARNING: CPU: 1 PID: 54 at /build/linux-qOmAV7/linux-3.19.0/sound/pci/hda/hda_i915.c:115 snd_hdac_i915_register_notifier+0x35/0x40 [snd_hda_intel]()
[ 11.324250] Modules linked in: snd_hda_codec_hdmi intel_rapl snd_hda_codec_realtek snd_hda_codec_generic intel_powerclamp hp_wmi(+) sparse_keymap coretemp snd_hda_intel snd_hda_controller rfkill_gpio kvm_intel uvcvideo kvm crct10dif_pclmul crc32_pclmul videobuf2_vmalloc videobuf2_memops ghash_clmulni_intel videobuf2_core v4l2_common videodev media cryptd joydev serio_raw arc4 btusb bluetooth rtl8723be(OE) rtsx_pci_ms memstick btcoexist(OE) rtl_pci(OE) rtlwifi(OE) mac80211 cfg80211 snd_intel_sst_acpi snd_intel_sst_core snd_soc_sst_mfld_platform snd_hda_codec snd_soc_core wmi snd_compress hp_accel snd_hwdep snd_pcm_dmaengine lis3lv02d i915 snd_pcm input_polldev 8250_fintek dw_dmac dw_dmac_core video hp_wireless snd_seq_midi intel_smartconnect snd_seq_midi_event snd_rawmidi drm_kms_helper snd_seq i2c_hid
[ 11.324297] snd_seq_device snd_timer drm hid mei_txe i2c_designware_platform i2c_designware_core i2c_algo_bit mei snd pwm_lpss_platform iosf_mbi soundcore snd_soc_sst_acpi spi_pxa2xx_platform 8250_dw lpc_ich shpchp pwm_lpss mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc psmouse r8169 mii rtsx_pci ahci libahci sdhci_acpi sdhci
[ 11.324325] CPU: 1 PID: 54 Comm: kworker/1:1 Tainted: G OE 3.19.0-30-generic #34-Ubuntu
[ 11.324327] Hardware name: Hewlett-Packard HP 15 Notebook PC/2213, BIOS F.36 12/18/2014
[ 11.324332] Workqueue: events azx_probe_work [snd_hda_intel]
[ 11.324334] ffffffffc081c838 ffff8801786e3bf8 ffffffff817c4d5f 0000000000000007
[ 11.324338] 0000000000000000 ffff8801786e3c38 ffffffff81076a8a ffff8801786e3c08
[ 11.324342] ffffffffc0891b28 ffff880178244000 ffff88017841e000 00000000ffffffff
[ 11.324346] Call Trace:
[ 11.324354] [<ffffffff817c4d5f>] dump_stack+0x45/0x57
[ 11.324360] [<ffffffff81076a8a>] warn_slowpath_common+0x8a/0xc0
[ 11.324364] [<ffffffff81076b7a>] warn_slowpath_null+0x1a/0x20
[ 11.324369] [<ffffffffc0819af5>] snd_hdac_i915_register_notifier+0x35/0x40 [snd_hda_intel]
[ 11.324375] [<ffffffffc088f01d>] patch_generic_hdmi+0x58d/0x6c0 [snd_hda_codec_hdmi]
[ 11.324380] [<ffffffff811da145>] ? __kmalloc_track_caller+0x1a5/0x260
[ 11.324393] [<ffffffffc04bd359>] ? snd_hda_codec_configure+0x409/0x5a0 [snd_hda_codec]
[ 11.324401] [<ffffffffc04bd152>] snd_hda_codec_configure+0x202/0x5a0 [snd_hda_codec]
[ 11.324407] [<ffffffffc080c5e0>] ? azx_bus_reset+0xb0/0xb0 [snd_hda_controller]
[ 11.324412] [<ffffffffc080b940>] ? azx_halt+0x40/0x40 [snd_hda_controller]
[ 11.324416] [<ffffffffc080ae40>] ? azx_pcm_prepare+0x510/0x510 [snd_hda_controller]
[ 11.324421] [<ffffffffc0809c50>] ? azx_pcm_hw_params+0xa0/0xa0 [snd_hda_controller]
[ 11.324425] [<ffffffffc0809f98>] azx_codec_configure+0x38/0x60 [snd_hda_controller]
[ 11.324430] [<ffffffffc08185d4>] azx_probe_continue+0x4f4/0x810 [snd_hda_intel]
[ 11.324435] [<ffffffffc0818985>] azx_probe_work+0x15/0x20 [snd_hda_intel]
[ 11.324439] [<ffffffff8108fd78>] process_one_work+0x158/0x430
[ 11.324443] [<ffffffff810908bb>] worker_thread+0x5b/0x530
[ 11.324446] [<ffffffff81090860>] ? rescuer_thread+0x3a0/0x3a0
[ 11.324450] [<ffffffff81095959>] kthread+0xc9/0xe0
[ 11.324454] [<ffffffff81095890>] ? kthread_create_on_node+0x1c0/0x1c0
[ 11.324458] [<ffffffff817cbdd8>] ret_from_fork+0x58/0x90
[ 11.324462] [<ffffffff81095890>] ? kthread_create_on_node+0x1c0/0x1c0
[ 11.324464] ---[ end trace d1b84d1b0caf45e9 ]---

it's a uefi simple boot install of Ubuntu 15.04 on a new hp 15 r248nf
kernel is 3.19.0-30-generic

please let me know if more details are needed

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[fmaste (fmaste)]

Same here

[ 18.202308] sound hdaudioC0D0: autoconfig: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:line
[ 18.202315] sound hdaudioC0D0: speaker_outs=1 (0x15/0x0/0x0/0x0/0x0)
[ 18.202319] sound hdaudioC0D0: hp_outs=1 (0x1b/0x0/0x0/0x0/0x0)
[ 18.202322] sound hdaudioC0D0: mono: mono_out=0x0
[ 18.202325] sound hdaudioC0D0: inputs:
[ 18.202329] sound hdaudioC0D0: Front Mic=0x19
[ 18.202332] sound hdaudioC0D0: Rear Mic=0x18
[ 18.202335] sound hdaudioC0D0: Line=0x1a
[ 18.235706] ------------[ cut here ]------------
[ 18.235730] WARNING: CPU: 2 PID: 141 at /build/linux-S798Ny/linux-3.19.0/sound/pci/hda/hda_i915.c:115 snd_hdac_i915_register_notifier+0x35/0x40 [snd_hda_intel]()
[ 18.235733] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek joydev snd_hda_codec_generic snd_intel_sst_core serio_raw snd_soc_rt5640 snd_soc_sst_mfld_platform snd_hda_intel snd_hda_controller snd_soc_rl6231 parport_pc parport snd_hda_codec snd_soc_core 8250_fintek snd_hwdep snd_compress dw_dmac i2c_hid snd_pcm_dmaengine snd_pcm spi_pxa2xx_platform dw_dmac_core snd_timer i2c_designware_platform i2c_designware_core lpc_ich rfkill_gpio snd mei_txe snd_soc_sst_acpi 8250_dw mei shpchp pwm_lpss_platform soundcore iosf_mbi pwm_lpss mac_hid autofs4 btrfs xor raid6_pq xts gf128mul dm_crypt hid_generic usbhid hid crct10dif_pclmul i915 crc32_pclmul ghash_clmulni_intel cryptd i2c_algo_bit drm_kms_helper psmouse r8169 ahci drm mii libahci video sdhci_acpi sdhci
[ 18.235796] CPU: 2 PID: 141 Comm: kworker/2:2 Not tainted 3.19.0-31-generic #36-Ubuntu
[ 18.235799] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./Q1900B-ITX, BIOS P1.70 11/04/2014
[ 18.235805] Workqueue: events azx_probe_work [snd_hda_intel]
[ 18.235809] ffffffffc089a838 ffff8800363c3bf8 ffffffff817c4e0f 0000000000000007
[ 18.235813] 0000000000000000 ffff8800363c3c38 ffffffff81076a8a ffff8800363c3c08
[ 18.235817] ffffffffc0908b28 ffff880000053000 ffff88013a4a3800 00000000ffffffff
[ 18.235821] Call Trace:
[ 18.235832] [<ffffffff817c4e0f>] dump_stack+0x45/0x57
[ 18.235839] [<ffffffff81076a8a>] warn_slowpath_common+0x8a/0xc0
[ 18.235844] [<ffffffff81076b7a>] warn_slowpath_null+0x1a/0x20
[ 18.235849] [<ffffffffc0897af5>] snd_hdac_i915_register_notifier+0x35/0x40 [snd_hda_intel]
[ 18.235856] [<ffffffffc090601d>] patch_generic_hdmi+0x58d/0x6c0 [snd_hda_codec_hdmi]
[ 18.235864] [<ffffffff811da205>] ? __kmalloc_track_caller+0x1a5/0x260
[ 18.235878] [<ffffffffc084c359>] ? snd_hda_codec_configure+0x409/0x5a0 [snd_hda_codec]
[ 18.235887] [<ffffffffc084c152>] snd_hda_codec_configure+0x202/0x5a0 [snd_hda_codec]
[ 18.235894] [<ffffffffc07885e0>] ? azx_bus_reset+0xb0/0xb0 [snd_hda_controller]
[ 18.235899] [<ffffffffc0787940>] ? azx_halt+0x40/0x40 [snd_hda_controller]
[ 18.235905] [<ffffffffc0786e40>] ? azx_pcm_prepare+0x510/0x510 [snd_hda_controller]
[ 18.235909] [<ffffffffc0785c50>] ? azx_pcm_hw_params+0xa0/0xa0 [snd_hda_controller]
[ 18.235915] [<ffffffffc0785f98>] azx_codec_configure+0x38/0x60 [snd_hda_controller]
[ 18.235920] [<ffffffffc08965d4>] azx_probe_continue+0x4f4/0x810 [snd_hda_intel]
[ 18.235925] [<fff...

[Nitrometanol (perez-brun)]

affect the same way:
[ 4.266325] ------------[ cut here ]------------
[ 4.266339] WARNING: CPU: 0 PID: 68 at /build/linux-TgZcQQ/linux-3.19.0/sound/pci/hda/hda_i915.c:115 snd_hdac_i915_register_notifier+0x35/0x40 [snd_hda_intel]()
[ 4.266341] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_intel_sst_acpi snd_intel_sst_core snd_soc_sst_mfld_platform snd_hda_intel snd_soc_core snd_hda_controller snd_hda_codec snd_compress intel_rapl snd_pcm_dmaengine snd_hwdep intel_powerclamp snd_pcm coretemp snd_seq_midi kvm_intel snd_seq_midi_event kvm snd_rawmidi i915 crct10dif_pclmul snd_seq crc32_pclmul ghash_clmulni_intel cryptd snd_seq_device snd_timer drm_kms_helper drm snd serio_raw joydev lpc_ich soundcore i2c_algo_bit shpchp mei_txe mei iosf_mbi snd_soc_sst_acpi video 8250_fintek mac_hid tpm_infineon crystalhd(OE) parport_pc ppdev lp parport sunrpc autofs4 pata_acpi hid_generic usbhid hid psmouse pata_jmicron r8169 mii ahci libahci
[ 4.266395] CPU: 0 PID: 68 Comm: kworker/0:1 Tainted: G OE 3.19.0-33-generic #38-Ubuntu
[ 4.266397] Hardware name: ASUS All Series/J1900I-C, BIOS 0805 09/16/2015
[ 4.266402] Workqueue: events azx_probe_work [snd_hda_intel]
[ 4.266405] ffffffffc0582838 ffff8801787dbbf8 ffffffff817c4f9f 0000000000000007
[ 4.266409] 0000000000000000 ffff8801787dbc38 ffffffff81076a8a ffff8801787dbc08
[ 4.266413] ffffffffc05b3b28 ffff88017a200000 ffff88017834b800 00000000ffffffff
[ 4.266417] Call Trace:
[ 4.266428] [<ffffffff817c4f9f>] dump_stack+0x45/0x57
[ 4.266434] [<ffffffff81076a8a>] warn_slowpath_common+0x8a/0xc0
[ 4.266438] [<ffffffff81076b7a>] warn_slowpath_null+0x1a/0x20
[ 4.266443] [<ffffffffc057faf5>] snd_hdac_i915_register_notifier+0x35/0x40 [snd_hda_intel]
[ 4.266450] [<ffffffffc05b101d>] patch_generic_hdmi+0x58d/0x6c0 [snd_hda_codec_hdmi]
[ 4.266457] [<ffffffff811da205>] ? __kmalloc_track_caller+0x1a5/0x260
[ 4.266476] [<ffffffffc05cf359>] ? snd_hda_codec_configure+0x409/0x5a0 [snd_hda_codec]
[ 4.266484] [<ffffffffc05cf152>] snd_hda_codec_configure+0x202/0x5a0 [snd_hda_codec]
[ 4.266491] [<ffffffffc054b5e0>] ? azx_bus_reset+0xb0/0xb0 [snd_hda_controller]
[ 4.266496] [<ffffffffc054a940>] ? azx_halt+0x40/0x40 [snd_hda_controller]
[ 4.266500] [<ffffffffc0549e40>] ? azx_pcm_prepare+0x510/0x510 [snd_hda_controller]
[ 4.266505] [<ffffffffc0548c50>] ? azx_pcm_hw_params+0xa0/0xa0 [snd_hda_controller]
[ 4.266510] [<ffffffffc0548f98>] azx_codec_configure+0x38/0x60 [snd_hda_controller]
[ 4.266515] [<ffffffffc057e5d4>] azx_probe_continue+0x4f4/0x810 [snd_hda_intel]
[ 4.266520] [<ffffffffc057e985>] azx_probe_work+0x15/0x20 [snd_hda_intel]
[ 4.266525] [<ffffffff8108fd78>] process_one_work+0x158/0x430
[ 4.266529] [<ffffffff810908bb>] worker_thread+0x5b/0x530
[ 4.266533] [<ffffffff81090860>] ? rescuer_thread+0x3a0/0x3a0
[ 4.266537] [<ffffffff81095959>] kthread+0xc9/0xe0
[ 4.266541] [<ffffffff81095890>] ? kthread_create_on_node+0x1c0/0x1c0
[ 4.266545] [<ffffffff817cc018>] ret_from_fork+0x58/0x90
[ 4.266550] [<ffffffff81095890>] ? kthread_create_on_node+0x1c0/0x1c0
[ 4.266552] ...