Using gentoo-sources-2.6.28 and sys-fs/udev-135-r3, sound card drivers compiled into kernel (not alsa-drivers package and not loadable modules) for Intel AC'97 device, media-sound/alsa-utils-1.0.18 --- does not create appriopriate entries in /dev. The sound card is actually detected and working, as the device nodes can be created by hand and all of a sudden sound starts working flawlessly. Especially, using information from proc I could recreate all needed devices: badb@Ty_Draniu ~ $ cat /proc/asound/devices 0: [ 0] : control 1: : sequencer 16: [ 0- 0]: digital audio playback 20: [ 0- 4]: digital audio playback 24: [ 0- 0]: digital audio capture 25: [ 0- 1]: digital audio capture 26: [ 0- 2]: digital audio capture 27: [ 0- 3]: digital audio capture 33: : timer Ty_Draniu ~ # mkdir /dev/snd; cd /dev/snd; mknod timer c 116 33; mknod controlC0 c 116 0; mknod pcmC0D0p c 116 16; mknod pcmC0D4p c 116 20; mknod pcmC0D0c c 116 24; mknod pcmC0D1c c 116 25; mknod pcmC0D2c c 116 26; mknod pcmC0D3c c 116 27; chown -R root:audio /dev/snd Reproducible: Couldn't Reproduce Steps to Reproduce: Reproducing may be difficult, as it's the first time I've stumbled into something like that. Ty_Draniu ~ # lspci | grep audio 00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03) Ty_Draniu ~ # cat /boot/config-2.6.28 | grep SND | grep -v "#" CONFIG_SND=y CONFIG_SND_TIMER=y CONFIG_SND_PCM=y CONFIG_SND_RAWMIDI=y CONFIG_SND_SEQUENCER=y CONFIG_SND_OSSEMUL=y CONFIG_SND_MIXER_OSS=y CONFIG_SND_PCM_OSS=y CONFIG_SND_PCM_OSS_PLUGINS=y CONFIG_SND_SEQUENCER_OSS=y CONFIG_SND_VMASTER=y CONFIG_SND_MPU401_UART=y CONFIG_SND_AC97_CODEC=y CONFIG_SND_DRIVERS=y CONFIG_SND_MPU401=y CONFIG_SND_PCI=y CONFIG_SND_INTEL8X0=y Ty_Draniu ~ # emerge --info Portage 2.1.6.4 (default/linux/x86/2008.0, gcc-4.3.2, glibc-2.9_p20081201-r1, 2.6.28-gentoo i686) ================================================================= System uname: Linux-2.6.28-gentoo-i686-Intel-R-_Pentium-R-_M_processor_1.60GHz-with-glibc2.0 Timestamp of tree: Mon, 12 Jan 2009 15:30:01 +0000 app-shells/bash: 3.2_p48 dev-lang/python: 2.4.4-r13, 2.5.2-r8 dev-util/cmake: 2.6.2-r1 sys-apps/baselayout: 2.0.0 sys-apps/openrc: 0.4.1-r1 sys-apps/sandbox: 1.3.2 sys-devel/autoconf: 2.13, 2.63 sys-devel/automake: 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.19 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 2.2.6a virtual/os-headers: 2.6.28-r1 ACCEPT_KEYWORDS="x86 ~x86" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=pentium-m -fomit-frame-pointer -fno-ident -s -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-O2 -march=pentium-m -fomit-frame-pointer -fno-ident -s -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LDFLAGS="-Wl,-O1" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X acpi alsa bash-completion berkdb branding bzip2 cddb cdr cli cracklib crypt dbus dri dvd exif expat ffmpeg fortran gdbm gif gimp glibc-omitfp glut gmp gphoto2 gpm hal iconv ieee1394 imagemagick ipv6 isdnlog jabber jpeg jpeg2k kde kdehiddenvisibility kontact kpathsea latex midi mmap mmx mp3 mpeg mplayer mudflap musepack musicbrainz ncurses nls nptl nptlonly ogg openal opengl openmp pam pcre pdf perl png pppd python qt3 qt4 readline reflection sdl session spl sse sse2 ssl subversion svg sysfs tcpd tiff unicode usb vorbis win32codecs x86 xine xorg xscreensaver xv xvid zeroconf zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="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 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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" USERLAND="GNU" VIDEO_CARDS="radeon" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
False alarm, turns out udev was for some reason turned off on that machine. Sorry for wasting time and bandwidth.
