Same issue after updating alsa drivers (kernel 3.13, oem-audio-hda- daily-dkms - 0.201410311235~ubuntu14.04.1 ):
dmesg output [ 138.914918] snd: module verification failed: signature and/or required key missing - tainting kernel [ 138.918891] snd_hda_codec: disagrees about version of symbol snd_ctl_add [ 138.918893] snd_hda_codec: Unknown symbol snd_ctl_add (err -22) [ 138.918906] snd_hda_codec: Unknown symbol snd_jack_report (err 0) [ 138.918911] snd_hda_codec: Unknown symbol snd_pcm_add_chmap_ctls (err 0) [ 138.918915] snd_hda_codec: disagrees about version of symbol snd_card_proc_new [ 138.918916] snd_hda_codec: Unknown symbol snd_card_proc_new (err -22) [ 138.918932] snd_hda_codec: Unknown symbol snd_ctl_add_vmaster_hook (err 0) [ 138.918937] snd_hda_codec: Unknown symbol snd_ctl_sync_vmaster (err 0) [ 138.918940] snd_hda_codec: disagrees about version of symbol snd_ctl_remove [ 138.918940] snd_hda_codec: Unknown symbol snd_ctl_remove (err -22) [ 138.918942] snd_hda_codec: disagrees about version of symbol snd_ctl_find_id [ 138.918943] snd_hda_codec: Unknown symbol snd_ctl_find_id (err -22) [ 138.918949] snd_hda_codec: Unknown symbol snd_kctl_jack_new (err 0) [ 138.918951] snd_hda_codec: disagrees about version of symbol snd_ctl_new1 [ 138.918952] snd_hda_codec: Unknown symbol snd_ctl_new1 (err -22) [ 138.918961] snd_hda_codec: Unknown symbol snd_pcm_std_chmaps (err 0) [ 138.918967] snd_hda_codec: Unknown symbol snd_ctl_make_virtual_master (err 0) [ 138.918977] snd_hda_codec: disagrees about version of symbol snd_ctl_boolean_mono_info [ 138.918977] snd_hda_codec: Unknown symbol snd_ctl_boolean_mono_info (err -22) [ 138.918985] snd_hda_codec: Unknown symbol snd_jack_new (err 0) [ 138.918989] snd_hda_codec: Unknown symbol snd_hwdep_new (err 0) [ 138.919001] snd_hda_codec: Unknown symbol snd_kctl_jack_report (err 0) [ 138.919003] snd_hda_codec: disagrees about version of symbol snd_device_new [ 138.919004] snd_hda_codec: Unknown symbol snd_device_new (err -22) [ 138.919013] snd_hda_codec: Unknown symbol _snd_ctl_add_slave (err 0) [ 138.919020] snd_hda_codec: disagrees about version of symbol snd_pci_quirk_lookup [ 138.919021] snd_hda_codec: Unknown symbol snd_pci_quirk_lookup (err -22) [ 138.919023] snd_hda_codec: disagrees about version of symbol snd_device_free [ 138.919024] snd_hda_codec: Unknown symbol snd_device_free (err -22) [ 138.919029] snd_hda_codec: Unknown symbol snd_pcm_hw_constraint_step (err 0) [ 138.919040] snd_hda_codec: Unknown symbol snd_pcm_format_width (err 0) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1284352 Title: snd_hda_codec: module verification failed: signature and/or required key missing - tainting kernel Status in “alsa-driver” package in Ubuntu: Confirmed Bug description: Well, another ubuntu update, another round of fighting to get sound working. Dual boot to Windows 8 to make sure sound works, so hardware is fine. While in Linux terminal: brian@vaio:~$ brian@vaio:~$ lsmod | grep snd snd_hda_codec 137465 0 snd_hwdep 13602 1 snd_hda_codec snd_pcm 102033 1 snd_hda_codec snd_page_alloc 18710 1 snd_pcm snd_seq_midi 13324 0 snd_seq_midi_event 14899 1 snd_seq_midi snd_rawmidi 30095 1 snd_seq_midi snd_seq 61560 2 snd_seq_midi_event,snd_seq_midi snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi snd_timer 29433 2 snd_pcm,snd_seq snd 69141 8 snd_hwdep,snd_timer,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_seq_device,snd_seq_midi soundcore 12680 1 snd brian@vaio:~$ cat /proc/asound/cards --- no soundcards --- brian@vaio:~$ sudo alsa force-reload Unloading ALSA sound driver modules: snd-hda-codec snd-hwdep snd-pcm snd-page-alloc snd-seq-midi snd-seq-midi-event snd-rawmidi snd-seq snd-seq-device snd-timer. Loading ALSA sound driver modules: snd-hda-codec snd-hwdep snd-pcm snd-page-alloc snd-seq-midi snd-seq-midi-event snd-rawmidi snd-seq snd-seq-device snd-timer. brian@vaio:~$ cat /proc/asound/cards --- no soundcards --- brian@vaio:~$ ubuntu-bug -s audio ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.11.0-17.31-generic 3.11.10.3 Uname: Linux 3.11.0-17-generic x86_64 ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDmesg: [ 21.837687] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Date: Mon Feb 24 14:13:08 2014 InstallationDate: Installed on 2013-10-20 (127 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MarkForUpload: True PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Title: PCI/internal sound card not detected UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/06/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: R1140Y8 dmi.board.asset.tag: N/A dmi.board.name: VAIO dmi.board.vendor: Sony Corporation dmi.board.version: N/A dmi.chassis.asset.tag: N/A dmi.chassis.type: 10 dmi.chassis.vendor: Sony Corporation dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrR1140Y8:bd10/06/2010:svnSonyCorporation:pnVPCEC390X:pvrC607HR4N:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A: dmi.product.name: VPCEC390X dmi.product.version: C607HR4N dmi.sys.vendor: Sony Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1284352/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp