Bug 78798 – oss devices missing with kernel 2.6.10

• Product: Gentoo Linux
• Status: RESOLVED NEEDINFO

[Description Jedi 2005-01-20 04:27:37 UTC]

if you have snd-pcm-oss modules in autoload or if you load it with modprobe, the /dev/dsp device not appears.

if you execute /etc/init.d/alsasound restart then the device appear, but then sound works no more.

I have 2.6.10-gentoo-r5 with following modules loaded
snd_intel8x0m          19012  2
snd_ac97_codec         77408  1 snd_intel8x0m
snd_seq_oss            35712  0
snd_seq_midi_event      7808  1 snd_seq_oss
snd_seq                54672  4 snd_seq_oss,snd_seq_midi_event
snd_seq_device          8844  2 snd_seq_oss,snd_seq
snd_pcm_oss            54436  0
snd_pcm                98824  3 snd_intel8x0m,snd_ac97_codec,snd_pcm_oss
snd_timer              26116  2 snd_seq,snd_pcm
snd_page_alloc         10244  2 snd_intel8x0m,snd_pcm
snd_mixer_oss          20608  2 snd_pcm_oss
snd                    56676  11 snd_intel8x0m,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_pcm,snd_timer,snd_mixer_oss
soundcore              10080  2 snd
fglrx                 241344  7
joydev                  9920  0
evdev                   9600  0
uhci_hcd               34192  0
thermal                13448  0
processor              19756  1 thermal
fan                     4612  0
intel_agp              22812  1
agpgart                34856  2 intel_agp

with kernel 2.6.9 all worked fine



Reproducible: Always
Steps to Reproduce:
1. modprobe snd-pcm-oss
2. 
3.




Portage 2.0.51-r3 (default-linux/x86/2004.0, gcc-3.3.5, glibc-2.3.4.20040808-r1,
2.6.10-gentoo-r5 i686)
=================================================================
System uname: 2.6.10-gentoo-r5 i686 Intel(R) Pentium(R) M processor 1600MHz
Gentoo Base System version 1.4.16
Autoconf: sys-devel/autoconf-2.59-r5
Automake: sys-devel/automake-1.8.5-r1
Binutils: sys-devel/binutils-2.15.92.0.2-r1
Headers:  sys-kernel/linux26-headers-2.6.8.1-r2
Libtools: sys-devel/libtool-1.5.2-r7
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CFLAGS="-march=pentium4 -O2 -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
COMPILER=""
CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config
/usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown
/usr/kde/3/share/config /usr/lib/fax /usr/lib/mozilla/defaults/pref
/usr/share/config /usr/share/texmf/dvipdfm/config/
/usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/
/usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/qmail/control
/var/spool/fax/etc"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-march=pentium4 -O2 -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs autoconfig ccache distlocks fixpackages sandbox sfperms"
GENTOO_MIRRORS="http://www.die.unipd.it/pub/Linux/distributions/gentoo-sources/
http://pandemonium.tiscali.de/pub/gentoo/
http://ftp.uni-erlangen.de/pub/mirrors/gentoo"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY=""
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="x86 X X509 aalib acpi alsa apache2 apm arts avi bash-completion berkdb
bitmap-fonts bluetooth bootsplash cdparanoia cdr cdw cjk crypt cups dga directfb
divx4linux doc dvd dvdr encode esd f77 fam fbcon fbdev flac flash font-server
foomaticdb fortran fpx freetds ftp gcj gdbm gif gimp ginac gmp gnome gnutls
gphoto2 gpm gps graphviz gstreamer gtk gtk2 guile hal hdf5 howl imagemagick imap
imlib ipv6 irda java javascript jbig jce joystick jpeg junit kde kerberos lcms
ldap libcaca libg++ libwww lirc live lzo lzw-tiff mad mcal mikmod mmx motif
mozilla mpeg mpi mssql multitarget mysql nagios-dns nagios-ntp nagios-ping
nagios-ssh nas ncurses net network nls nptl oggvorbis opengl pam pcmcia pdflib
perl png pnp postgres pthreads python qhull qt quicktime readline real rtc samba
scanner sdl slang slp snmp spell sse ssl svg svga tcltk tcpd tetex tga theora
threads tiff truetype truetype-fonts type1-fonts unicode usb v4l v4l2 wifi
winbind wmf wxwindows xanim xine xml xml2 xmms xpm xprint xv xvid xvmc yaz zlib
video_cards_radeon"

[Comment 1 Carsten Lohrke (RETIRED) 2005-01-20 07:39:50 UTC]

Jedi: Please use New -> Gentoo Linux -> Component: Ebuilds. Infrastructure is not the correct addressee.

[Comment 2 Daniel Drake (RETIRED) 2005-01-20 08:27:57 UTC]

Using alsasound is the correct way to do it, you shouldn't autoload another way unless you know what you are doing. Please define what you mean by "sound works no more"

[Comment 3 Jedi 2005-01-21 01:00:32 UTC]

alsasound is started at boot with module snd_intel8x0.
when I need to play with et normally I load with modprobe snd-pcm-oss that created the necessary /dev/dsp device.

starting from kernel 2.6.10 that device will not be created loading the module, but only restarting alsasound.

restarting alsasound /dev/dsp is created (and seems to work) but all my gnome sound effects disappears (master and pcm volume are ok, no mute).

another question is why manually restarting alsasound it loads all sound modules and by boot not.

I don't need normally sequencer and oss stuffs but only when I need they I load manually and up to 2.6.9 has worked well.

[Comment 4 Jedi 2005-01-22 00:52:19 UTC]

I should correct me:

restarting alsasound /dev/dsp is created (and seems to work) but all my gnome sound effects disappears (master and pcm volume are ok, no mute)

it is not true: only the gnome shortcuts for volume adjusting works no more

still remains the problem that using modprobe snd-pcm-oss, /dev/dsp not appears

[Comment 5 Justin Findlay 2005-02-20 20:25:36 UTC]

I'm getting this bug as well.  The OSS devices aren't created unless /etc/init.d/alsasound is restarted by hand.

[Comment 6 Justin Findlay 2005-03-01 12:20:37 UTC]

Jedi, I've found that I had my sound card driver listed in /etc/modules.autoload.d/kernel-2.6 (snd-cmipci), and removing it from that file seemed to solve the OSS device problem, that I do not need to rerun alsasound to have the OSS compatibility layer generated by alsasound.

[Comment 7 Jedi 2005-03-05 01:47:47 UTC]

if I remove module from autoload, then the alsa init script loads all sound modules.
I with older kernel, you can load oss modules after the boot (at the time you need it) and the dsp device appears without problems. with 2.6.10 not.

[Comment 8 Jedi 2005-03-05 01:49:02 UTC]

if I remove module from autoload, then the alsa init script loads all sound modules.
I with older kernel, you can load oss modules after the boot (at the time you need it) and the dsp device appears without problems. with 2.6.10 not.

[Comment 9 John Mylchreest (RETIRED) 2005-03-05 02:20:26 UTC]

I think this might be relating to udev actually.

can you please paste the output of ls -l /etc/udev/
if you see a permissions.d, please delete this directly completely (or move it out the way for safe keeping for now!) and then try again.
Please let me know how you get on.

[Comment 10 Daniel Drake (RETIRED) 2005-03-16 06:16:51 UTC]

Ok, could everyone still experiencing this problem please try 2.6.11 and also post here which udev version is in use.

[Comment 11 Daniel Drake (RETIRED) 2005-04-01 03:07:43 UTC]

If someone can test on the latest kernels and provide with more info then please reopen.

[Comment 12 Jedi 2006-03-20 12:06:55 UTC]

ok, I tried with 2.6.15 and latest alsasound script, now seems to work correctly.