/dev/dsp and udev?

Message

afabco · Post by **afabco** » Fri Mar 11, 2005 10:14 pm

Shouldn't udev be setting up /dev/dsp ?

If I type:

$ mpg123 <stream>
<snip>
Can't open /dev/dsp!

$ ls -la /dev/dsp

ls: /dev/dsp: no such file or directory.

Well, duh.

What gives?

thx

mascanho · Post by **mascanho** » Fri Mar 11, 2005 11:50 pm

try etc-update udev

Morimando · Post by **Morimando** » Sat Mar 12, 2005 12:03 am

Yes udev should. Do you run pure udev or mixed with devfs?

afabco · Post by **afabco** » Sat Mar 12, 2005 2:44 am

I believe so. I actually even emerge -C'ed devfs.

What do I need to post?

frenkel · Post by **frenkel** » Sat Mar 12, 2005 11:15 am

This is a bug in udev. The unstable version of udev has a fix, you can emerge it this way:

# echo "sys-fs/udev ~x86" >> /etc/portage/packages.keywords
# emerge udev

Good luck,
Frank

mascanho · Post by **mascanho** » Sat Mar 12, 2005 11:49 am

i'm now thinking changing to defvs it seems so much more stable, and easy to use .
If it still fails with ~x86 udev try devfs instead

frenkel · Post by **frenkel** » Sat Mar 12, 2005 11:56 am

mascanho wrote:i'm now thinking changing to defvs it seems so much more stable, and easy to use .
If it still fails with ~x86 udev try devfs instead

You should not use devfs anymore, its obsolete. The ~x86 version of udev really fixes it, and it's not unstable!

Frank

Morimando · Post by **Morimando** » Sat Mar 12, 2005 1:26 pm

devfs is more rigid concerning naming schemes and such, stick to udev

codemaker · Post by **codemaker** » Sat Mar 12, 2005 4:41 pm

I was trying to switch do udev, followed the gentoo documentation and ended up with no sound and no X.

I was using alsa-driver for sound and ati-drivers. The alsa modules are not loaded:

Code: Select all

Mar 12 15:01:21 delphis snd_intel8x0: Unknown symbol snd_ac97_pcm_assign
Mar 12 15:01:21 delphis snd_intel8x0: Unknown symbol snd_pcm_hw_constraint_integer
Mar 12 15:01:21 delphis snd_intel8x0: Unknown symbol snd_pcm_hw_constraint_msbits
Mar 12 15:01:21 delphis snd_intel8x0: Unknown symbol snd_pcm_period_elapsed
Mar 12 15:01:21 delphis snd_intel8x0: Unknown symbol snd_ac97_tune_hardware
Mar 12 15:01:21 delphis snd: Unknown parameter `device_mode'
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_info_register
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_info_create_module_entry
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_info_free_entry
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_verbose_printk
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_iprintf
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_ecards_limit
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_oss_info_register
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_unregister_device
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_device_new
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_kmalloc_strdup
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_info_unregister
Mar 12 15:01:21 delphis snd_timer: Unknown symbol snd_register_device
Mar 12 15:01:21 delphis snd_pcm: Unknown symbol snd_info_register
...

KDM dies with this log:

Code: Select all

XFree86 Version 4.3.0.1
Release Date: 15 August 2003
X Protocol Version 11, Revision 0, Release 6.6
Build Operating System: Linux 2.6.5 i686 [ELF] 
Build Date: 01 May 2004
	Before reporting problems, check http://www.XFree86.Org/
	to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
         (++) from command line, (!!) notice, (II) informational,
         (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/XFree86.0.log", Time: Mon May  3 23:26:04 2004
(==) Using config file: "/etc/X11/XF86Config"
(WW) RADEON: No matching Device section for instance (BusID PCI:2:0:1) found
Symbol drmGetClient from module /usr/X11R6/lib/modules/drivers/radeon_drv.o is unresolved!
(EE) Mouse1: Unknown protocol "imps2"
(EE) PreInit failed for input device "Mouse1"
No core pointer

Fatal server error:
failed to initialize core devices

I started writting this post with no ideas about what this could be. I'm now wondering if the problem is with different names for the devices between devfs and udev?

frenkel · Post by **frenkel** » Sat Mar 12, 2005 6:40 pm

Frenkel wrote:This is a bug in udev. The unstable version of udev has a fix, you can emerge it this way:

# echo "sys-fs/udev ~x86" >> /etc/portage/packages.keywords
# emerge udev

Good luck,
Frank

mascanho · Post by **mascanho** » Sat Mar 12, 2005 8:07 pm

Code: Select all

etc-update udev

its a known bug

afabco · Post by **afabco** » Thu Mar 17, 2005 6:25 pm

sorry for the delay, having other, far more serious problems after last emerge -uD world

http://forums.gentoo.org/viewtopic-t-30 ... ight-.html
http://forums.gentoo.org/viewtopic-t-30 ... ight-.html

anyway, I have udev-054 emerge'ed, and many many reboots since (see above problems).

Still no /dev/dsp.

What next?

thanks

mascanho · Post by **mascanho** » Thu Mar 17, 2005 7:21 pm

man thats werid if you already tried all udev versions and cheked your kernel configuration i would sugest you to try

Code: Select all

mknod

dont remember anything else ... sorry

afabco · Post by **afabco** » Thu Mar 17, 2005 7:29 pm

s'alright. I'm thinking this machine is totally voodoo'ed anyway. Was fine for months and months until two days ago. Oh well.

mascanho · Post by **mascanho** » Thu Mar 17, 2005 7:39 pm

last case backup up everything and reinstall gentoo. But im sure its just a simple problem that we are making a big thing out of it

quadbox · Post by **quadbox** » Thu Mar 17, 2005 9:46 pm

Is the /dev/sound/dsp device there?

/dev/dsp is just a symlink to it. If the actual device is there, just manually create a symlink

afabco · Post by **afabco** » Thu Mar 17, 2005 10:43 pm

Here's the relevant stuff:

bash-2.05b$ mpg123 mp3/*
High Performance MPEG 1.0/2.0/2.5 Audio Player for Layer 1, 2 and 3.
Version 0.59s-mh4 (2000/Oct/27). Written and copyrights by Michael Hipp.
Uses code from various people. See 'README' for more!
THIS SOFTWARE COMES WITH ABSOLUTELY NO WARRANTY! USE AT YOUR OWN RISK!
Can't open /dev/dsp!
bash-2.05b$ su
Password:
No Sockets found in /var/run/screen/S-root.

leeamlp thomson # ls -la /dev/dsp
ls: /dev/dsp: No such file or directory
leeamlp thomson # ls -la /dev/snd
snd sndstat
leeamlp thomson # ls -la /dev/snd/
total 0
drwxr-xr-x 2 root root 0 Mar 17 13:29 .
drwxr-xr-x 17 root root 0 Mar 17 13:29 ..
crw------- 1 thomson audio 116, 0 Mar 17 13:29 controlC0
crw------- 1 thomson audio 116, 24 Mar 17 13:29 pcmC0D0c
crw------- 1 thomson audio 116, 16 Mar 17 13:29 pcmC0D0p
crw------- 1 thomson audio 116, 25 Mar 17 13:29 pcmC0D1c
crw------- 1 thomson audio 116, 26 Mar 17 13:29 pcmC0D2c
crw------- 1 thomson audio 116, 27 Mar 17 13:29 pcmC0D3c
crw------- 1 thomson audio 116, 20 Mar 17 13:29 pcmC0D4p
crw------- 1 thomson audio 116, 1 Mar 17 13:29 seq
crw------- 1 thomson audio 116, 33 Mar 17 13:29 timer
leeamlp thomson # emerge -pv udev
________________________________________________________________________________

cfg-update 1.6 : Building checksum index... (takes a few seconds) done!
________________________________________________________________________________

These are the packages that I would merge, in order:

Calculating dependencies ...done!
[ebuild R ] sys-fs/udev-054 (-selinux) -static 0 kB

Total size of downloads: 0 kB
leeamlp thomson # cat /etc/udev/udev.rules

<snip>
# sound devices
KERNEL="adsp", NAME="sound/%k", SYMLINK="%k"
KERNEL="adsp[0-9]*", NAME="sound/%k", SYMLINK="%k"
KERNEL="audio", NAME="sound/%k", SYMLINK="%k"
KERNEL="audio[0-9]*", NAME="sound/%k", SYMLINK="%k"
KERNEL="dsp", NAME="sound/%k", SYMLINK="%k"
KERNEL="dsp[0-9]*", NAME="sound/%k", SYMLINK="%k"
KERNEL="mixer", NAME="sound/%k", SYMLINK="%k"
KERNEL="mixer[0-9]*", NAME="sound/%k", SYMLINK="%k"
KERNEL="sequencer", NAME="sound/%k", SYMLINK="%k"
KERNEL="sequencer[0-9]*", NAME="sound/%k", SYMLINK="%k"
<snip>

leeamlp thomson # cat /etc/udev/udev.permissions

<snip>
# audio devices
dsp*:root:audio:0660
audio*:root:audio:0660
midi*:root:audio:0660
mixer*:root:audio:0660
sequencer*:root:audio:0660
sound/*:root:audio:0660
snd/*:root:audio:0660
beep:root:audio:0660
admm*:root:audio:0660
adsp*:root:audio:0660
aload*:root:audio:0660
amidi*:root:audio:0660
dmfm*:root:audio:0660
dmmidi*:root:audio:0660
sndstat:root:audio:0660

<snip>

Hm. Just noticed that the permissions don't match, which usually implies udev isn't doing the dev setups. Let me check /etc/rc.conf

RC_DEVICES="udev"

# Set to "yes" if you want to save /dev to a tarball on shutdown
# and restore it on startup. This is useful if you have a lot of
# custom device nodes that udev do not handle/know about.
# (ONLY used by UDEV enabled systems!)

RC_DEVICE_TARBALL="no"

Those look ok.

Will delete /dev/snd, and get back with you.

bludger · Post by **bludger** » Fri Mar 25, 2005 6:49 am

Could you please specify which versions of udev have the bug and which have the fix. Just saying that the "current" version has a bug, does not say much a few weeks later when the portage tree has been updated. Posting the bug number might also help.

AssociateX · Post by **AssociateX** » Sun May 15, 2005 5:53 am

This may help:

http://forums.gentoo.org/viewtopic-p-24 ... ml#2410125

sentinals_arm · Post by **sentinals_arm** » Tue May 17, 2005 4:03 pm

I had this problem and just discovered that /dev/sound was a character device and NOT a directory (if you look at the udev rules file, the dsp node in put into /dev/sound and a symlink of /dev/dsp is created)

try (if your using alsa):

Code: Select all

rm /dev/sound
/etc/init.d/alsasound restart

SmegTheLight · Post by **SmegTheLight** » Sun May 22, 2005 6:52 pm

sentinals_arm wrote:I had this problem and just discovered that /dev/sound was a character device and NOT a directory (if you look at the udev rules file, the dsp node in put into /dev/sound and a symlink of /dev/dsp is created)

try (if your using alsa):
Code: Select all
rm /dev/sound
/etc/init.d/alsasound restart

That did it for me !

neonknight · Post by **neonknight** » Mon May 23, 2005 6:39 pm

Try
modprobe snd-seq-oss
modprobe snd-pcm-oss
modprobe snd-mixer-oss

If it works, you can add these tree modules to /etc/modules.autoload.d/kernel-2.6 or compile oss-emulation into the kernel.

krueger · Post by **krueger** » Fri May 27, 2005 8:48 am

SmegTheLight wrote:
sentinals_arm wrote:I had this problem and just discovered that /dev/sound was a character device and NOT a directory (if you look at the udev rules file, the dsp node in put into /dev/sound and a symlink of /dev/dsp is created)

try (if your using alsa):
Code: Select all
rm /dev/sound
/etc/init.d/alsasound restart
That did it for me !

Bingo!! Worked great

alterself.com · Post by **alterself.com** » Tue May 31, 2005 6:56 am

this did not work for me...

one big reason is that the /dev/sound dir dosent exist in the first place...

my sounds DOES WORK from cli just not from X....any ideas?

i am running ~x86 and am 'current' as of post date

Krojack · Post by **Krojack** » Wed Jun 29, 2005 9:34 pm

krueger wrote:
SmegTheLight wrote:
sentinals_arm wrote:I had this problem and just discovered that /dev/sound was a character device and NOT a directory (if you look at the udev rules file, the dsp node in put into /dev/sound and a symlink of /dev/dsp is created)

try (if your using alsa):
Code: Select all
rm /dev/sound
/etc/init.d/alsasound restart
That did it for me !
Bingo!! Worked great

Fixed mine also... thanks