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S/PDIF link shuts down
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Joined: 25 Sep 2004
Posts: 677
Location: Germany

PostPosted: Thu Nov 07, 2013 4:58 pm    Post subject: S/PDIF link shuts down Reply with quote

I am trying to use the S/PDIF signal of my Intel HD internal soundcard to get a signal to a A/D converter and from there to my speakers. The link works OK* after a reboot but sometimes completely shuts down. Thene there is no light coming through the toslink cable and the "Locked" led on my A/D converter stops burning. Also:
$ cat /proc/asound/card0/pcm1p/sub0/hw_params
format: S32_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 512
buffer_size: 8192

changes to
$ cat /proc/asound/card0/pcm1p/sub0/hw_params

The last time this happened was when I was playing a song in amarok and switched the equalizer. Playback stopped completely. I can start playback in amarok or mplayer and there is NO "Device or resource busy" message. But there is no sound. Kernel logs contain the following line
[ 5779.356911] hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj.
but I am not sure if this occured exactly at the same moment the optical interface shut down.

/etc/asound.conf contains the following copypasted content. Can you provide a reference manual for the file syntax and content?
pcm.!spdif {
     type hw
     card 0
     device 1

pcm.!default {
     type plug
     slave {
           pcm "spdif"

I have been googling for the last 2 hours and trying out different things and I can't find a solution. The only thing that helps is reloading the snd_hda_intel kernel module.

Do you have any idea what could be causing the link shut down?

$ emerge --info
Portage 2.2.7 (default/linux/amd64/13.0/desktop/kde, gcc-4.6.3, glibc-2.15-r3, 3.3.8-gentoo x86_64)
System uname: Linux-3.3.8-gentoo-x86_64-Intel-R-_Core-TM-2_Quad_CPU_Q9300_@_2.50GHz-with-gentoo-2.2
KiB Mem:     8178244 total,    541132 free
KiB Swap:    4194296 total,   4194184 free
Timestamp of tree: Thu, 07 Nov 2013 13:15:01 +0000
ld GNU ld (GNU Binutils) 2.23.1
ccache version 3.1.9 [disabled]
app-shells/bash:          4.2_p45
dev-java/java-config:     2.1.12-r1
dev-lang/python:          2.7.5-r3, 3.2.5-r3
dev-util/ccache:          3.1.9
dev-util/pkgconfig:       0.28
sys-apps/baselayout:      2.2
sys-apps/openrc:          0.11.8
sys-apps/sandbox:         2.6-r1
sys-devel/autoconf:       2.13::<unknown repository>, 2.69
sys-devel/automake:       1.11.6, 1.12.6, 1.13.4
sys-devel/binutils:       2.23.1
sys-devel/gcc:            4.6.3, 4.7.3-r1
sys-devel/gcc-config:     1.7.3
sys-devel/libtool:        2.4.2
sys-devel/make:           3.82-r4
sys-kernel/linux-headers: 3.9 (virtual/os-headers)
sys-libs/glibc:           2.15-r3
Repositories: gentoo java-overlay qt
CFLAGS="-march=native -O2 -pipe"
CONFIG_PROTECT="/etc /etc/init.d/ /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/polkit-1/actions /usr/share/themes/oxygen-gtk/gtk-2.0"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-march=native -O2 -pipe"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync"
FFLAGS="-O2 -pipe"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTDIR_OVERLAY="/var/lib/layman/java-overlay /var/lib/layman/qt"
USE="7zip X a52 aac acl acpi ada addbookmarks alsa amd64 amrnb amrwb bash-completion berkdb bluetooth branding bzip2 cairo cdda cddb cdio cdparanoia cdr cli consolekit cracklib crypt css cups custom-optimization cxx dbus declarative device-mapper divx dmraid dri dts dv dvd dvdr embedded emboss enca encode exif fam fat fbcon ffmpeg firefox flac fortran gdbm gif gimp git gnutls gpm gtk hddtemp iconv icq id3tag imap jabber java javascript jpeg jpeg2k kate kcal kde kdepim kipi lcms ldap libass libcaca libnotify libv4l2 live lm_sensors lzma lzo mad matroska midi mmx mmxext mng modules mozilla mp2 mp3 mp4 mpeg mplayer mudflap multilib musepack musicbrainz ncurses nls nptl nsplugin ntfs nvidia offensive ogg openal opengl openmp pam pango pcre pdf phonon plasma png policykit ppds qt3support qt4 readline rtc sasl schroedinger sdl semantic-desktop session slang sound speex spell srt sse sse2 ssl ssse3 startup-notification svg taglib tcpd tetex theora threads tiff timidity truetype type1 udev udisks unicode upower usb v4l v4l2 vcd vdpau videos vim vim-syntax vim-with-x vorbis wifi win32codecs wxwidgets wxwindows x264 xcb xcomposite xfs xinerama xml xscreensaver xv xvid xvmc zlib zvbi" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en de" LIRC_DEVICES="hauppauge" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" RUBY_TARGETS="ruby19 ruby18" SANE_BACKENDS="snapscan" USERLAND="GNU" VIDEO_CARDS="nv nvidia vesa nouveau" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"

EDIT: modified text: kernel module reload fixes problem temporarily
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