[SOLVED] ls: cannot access / dev / dsp *: No such file...

[Matti]

I'm using OSSv4 build 2006 compiled from Mercurial and it was working great, but yesterday something broke. I've booted into my Ubuntu 11.10 and I couldn't get sound output from programs. I've decided to reinstall oss-linux (that didn't resolve problems) and then I've compiled the package again, installed it and still no sound.

When looking at soundon.log there is this error message: ls: cannot access / dev / dsp *: No such file or directory and there are no dsp files or folders in the /dev, but earlier when sound was working there were there. I can't run any of the Open Sound programs like osstest, ossinfo, ossxmix: /dev/mixer: No such file or directory or just Terminated.

ossdetect -v -d

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$ ossdetect -v -d
mknod /dev/sndstat c 250 0 -m 20666
mknod /dev/midi c 250 1 -m 20666
mknod /dev/mixer c 250 2 -m 20666
mknod /dev/oss/oss_hdaudio0/mix0 c 249 3 -m 20666
mknod /dev/oss/oss_hdaudio0/pcm0 c 249 4 -m 20666
mknod /dev/oss/oss_hdaudio0/pcm1 c 249 6 -m 20666
mknod /dev/oss/oss_hdaudio0/pcm2 c 249 8 -m 20666
mknod /dev/oss/oss_hdaudio0/pcm3 c 249 10 -m 20666
mknod /dev/oss/oss_hdaudio0/pcm4 c 249 12 -m 20666
mknod /dev/oss/oss_hdaudio0/spdout0 c 249 14 -m 20666
mknod /dev/oss/oss_hdaudio0/pcmin0 c 249 16 -m 20666
mknod /dev/oss/oss_hdaudio0/pcmin1 c 249 18 -m 20666
mknod /dev/oss/oss_hdaudio0/spdin0 c 249 20 -m 20666


dmesg | grep oss

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$ dmesg | grep oss
[    0.217911] vgaarb: bridge control possible 0000:02:00.0
[    0.968369] Adding 1031072k swap on /dev/zram0.  Priority:100 extents:1 across:1031072k SS
[   14.195640] Adding 2096124k swap on /dev/sda11.  Priority:-1 extents:1 across:2096124k
[   14.299037] Adding 2096444k swap on /dev/sda5.  Priority:-2 extents:1 across:2096444k
[   25.327650] Adding 1031072k swap on /dev/zram0.  Priority:100 extents:1 across:1031072k SS
[   25.329600] Adding 1031072k swap on /dev/zram1.  Priority:100 extents:1 across:1031072k SS
[  782.683968] oss_hdaudio 0000:00:06.1: PCI INT B -> Link[AAZA] -> GSI 21 (level, low) -> IRQ 21
[  782.730783] usbcore: registered new interface driver oss_usb
[  782.733247] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[  782.733415] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[  782.736022] Pid: 19169, comm: ossdevlinks Tainted: P         C  3.0.0-19-generic #32-Ubuntu    /M57SLI-S4
[  782.736022] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[  782.736022] Process ossdevlinks (pid: 19169, ti=ebea2000 task=f1423300 task.ti=ebea2000)
[  782.736022]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[  782.736022] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:ebea3d6c
[  782.836977] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[  782.836977] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[  782.836977] Pid: 19170, comm: ossinfo Tainted: P      D  C  3.0.0-19-generic #32-Ubuntu    /M57SLI-S4
[  782.836977] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[  782.836977] Process ossinfo (pid: 19170, ti=ebd8e000 task=ec313300 task.ti=ebd8e000)
[  782.836977]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[  782.836977] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:ebd8fd6c
[  782.958062] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[  782.958730] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[  782.958730] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[  782.958730]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[  782.958730] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:ebe5fd6c
[  783.172419] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[  783.178507] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[  783.178507] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[  783.218683]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[  783.218683] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:ebd8fd6c
[  783.317808] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[  783.324015] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[  783.324015] Pid: 19183, comm: ossinfo Tainted: P      D  C  3.0.0-19-generic #32-Ubuntu    /M57SLI-S4
[  783.324015] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[  783.348024] Process ossinfo (pid: 19183, ti=ebe68000 task=ec313fc0 task.ti=ebe68000)
[  783.348024]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[  783.348024] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:ebe69d6c
[  783.448428] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[  783.448428] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[  783.448428] Pid: 19186, comm: ossinfo Tainted: P      D  C  3.0.0-19-generic #32-Ubuntu    /M57SLI-S4
[  783.448428] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[  783.448428] Process ossinfo (pid: 19186, ti=ebe5e000 task=ed0d8cc0 task.ti=ebe5e000)
[  783.448428]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[  783.548030] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:ebe5fd6c
[  846.029485] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[  846.029509] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[  846.029554] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[  846.029602]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[  846.029694] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:ed295d6c
[ 1282.798227] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[ 1282.798252] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[ 1282.798297] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[ 1282.798346]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[ 1282.798452] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:f1063d6c
[ 1282.799129] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[ 1282.799147] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[ 1282.799177] Pid: 20362, comm: ossdevlinks Tainted: P      D  C  3.0.0-19-generic #32-Ubuntu    /M57SLI-S4
[ 1282.799190] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[ 1282.799200] Process ossdevlinks (pid: 20362, ti=f1006000 task=ec2e72c0 task.ti=f1006000)
[ 1282.799237]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[ 1282.799331] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:f1007d6c
[ 3880.080422] IP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore]
[ 3880.080476] Modules linked in: oss_usb oss_hdaudio osscore zram(C) rfcomm bnep bluetooth lp binfmt_misc ufs dm_crypt nvidia(P) ppdev psmouse serio_raw k8temp parport_pc parport nv_tco it87 hwmon_vid i2c_nforce2 dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c firewire_ohci firewire_core usb_storage uas crc_itu_t forcedeth pata_amd sata_nv [last unloaded: zram]
[ 3880.080546] Pid: 12869, comm: ossinfo Tainted: P      D  C  3.0.0-19-generic #32-Ubuntu    /M57SLI-S4
[ 3880.080578] EIP is at oss_inc_refcounts+0x49/0xb0 [osscore]
[ 3880.080602] Process ossinfo (pid: 12869, ti=ec64e000 task=ebcb4c80 task.ti=ec64e000)
[ 3880.080690]  [<f894c21a>] oss_cdev_open+0xea/0x150 [osscore]
[ 3880.080918] EIP: [<f894ab69>] oss_inc_refcounts+0x49/0xb0 [osscore] SS:ESP 0068:ec64fd6c


I don't want to go back to ALSA and PulseAudio. Has anybody encountered a similiar problem or know how to fix it.

[cesium]

Try running 'sudo ossdevlinks -v -r'.

[Matti]

I've tried that before and now it doesn't print anything in terminal. When looking at contents of /dev there aren't any dsp symlinks.

[cesium]

It doesn't print anything? It should print at least one line if -v is used... Is OSS actually loaded? Please paste 'lsmod' output here.

Second, if oss is loaded, lets try symlinking /dev/dsp ourselves, to see if it otherwise works. Try 'sudo ln -s /dev/oss/oss_hdaudio0/pcm0 /dev/dsp' and try playing something (like with osstest).

Lastly, if the above works, try running 'sudo /usr/sbin/ossdevlinks -v -r' command again, and check dmesg to see if it crashes... Also check 'sudo file /usr/sbin/ossdevlinks'

[Matti]

I'm running Ubuntu with proposed repository enabled (it's for testing, experimental packages) and I think that some new package broke the functionality. I've used today Virtualbox and it complained about kernel modules. Something like that didn't happen for me very long time. I had to run sudo /etc/init.d/vboxdrv setup manually and while the kernel modules builded without problems just like the OSSv4 ones there were error message: * modprobe vboxpci failed. Please use 'dmesg' to find out why.

lsmod

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$ lsmod
Module                  Size  Used by
pci_stub               12550  0
vboxpci                32018  1 [permanent]
vboxnetadp             13328  0 [permanent]
vboxnetflt             27252  0 [permanent]
vboxdrv               256347  3 vboxpci,vboxnetadp,vboxnetflt,[permanent]
bnep                   17923  2
rfcomm                 38408  0
bluetooth             148869  10 bnep,rfcomm
oss_usb               116131  0 [permanent]
oss_hdaudio           148247  0 [permanent]
osscore               561053  16 oss_usb,oss_hdaudio,[permanent]
lp                     17455  0
binfmt_misc            17292  1
ufs                    78131  1
dm_crypt               22565  0
nvidia              10941552  40 [permanent]
ppdev                  12849  0
psmouse                73673  0
serio_raw              12990  0
parport_pc             32114  1
k8temp                 12905  0
parport                40930  3 lp,ppdev,parport_pc
nv_tco                 13399  0
i2c_nforce2            12906  0
it87                   29199  0
hwmon_vid              12658  1 it87
dm_raid45              76451  0
xor                    25987  1 dm_raid45
dm_mirror              21822  0
dm_region_hash         16065  1 dm_mirror
dm_log                 18193  3 dm_raid45,dm_mirror,dm_region_hash
btrfs                 622556  0
zlib_deflate           26622  1 btrfs
libcrc32c              12543  1 btrfs
firewire_ohci          35854  0
firewire_core          56937  1 firewire_ohci
usb_storage            44172  0
uas                    17699  0
forcedeth              58103  0
crc_itu_t              12627  1 firewire_core
sata_nv                23379  12
pata_amd               13753  0

I've tried symlinking before and when I run osstest it's just Terminated.

sudo file /usr/sbin/ossdevlinks

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$ sudo file /usr/sbin/ossdevlinks
/usr/sbin/ossdevlinks: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15, stripped

I've run sudo /usr/sbin/ossdevlinks -v -r again and still nothing shows up in terminal.

dmesg | grep ossdevlinks

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$ $ dmesg | grep ossdevlinks
[   18.497920] Pid: 1635, comm: ossdevlinks Tainted: P         C  3.0.0-19-generic #32-Ubuntu    /M57SLI-S4
[   18.497944] Process ossdevlinks (pid: 1635, ti=f1720000 task=f0ea6600 task.ti=f1720000)
[ 4590.433662] Pid: 15186, comm: ossdevlinks Tainted: P      D  C  3.0.0-19-generic #32-Ubuntu    /M57SLI-S4
[ 4590.433720] Process ossdevlinks (pid: 15186, ti=f14c4000 task=d6835940 task.ti=f14c4000)

[cesium]

So kernel issue? Lets try to force a rebuild of the OSS modules, maybe it would help:

chdir to /usr/lib/oss/build
run "sudo sh install.sh"
Reload OSS with "sudo soundoff" and "sudo soundon"
Try again ossdevlinks, osstest, etc.

[Matti]

Unfortunately that didn't help.

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$ cd /usr/lib/oss/build/
mateusz@mateusz-desktop:/usr/lib/oss/build$ sudo sh install.sh
[sudo] password for mateusz:

OSS build environment set up for REGPARM kernels

Building module osscore
Building module oss_ali5455
Building module oss_atiaudio
Building module oss_audigyls
Building module oss_audioloop
Building module oss_audiopci
Building module oss_cmi878x
Building module oss_cmpci
Building module oss_cs4281
Building module oss_cs461x
Building module oss_digi96
Building module oss_emu10k1x
Building module oss_envy24
Building module oss_envy24ht
Building module oss_fmedia
Building module oss_geode
Building module oss_hdaudio
Building module oss_ich
Building module oss_imux
Building module oss_madi
Building module oss_midiloop
Building module oss_midimix
Building module oss_sblive
Building module oss_sbpci
Building module oss_sbxfi
Building module oss_solo
Building module oss_trident
Building module oss_usb
Building module oss_userdev
Building module oss_via823x
Building module oss_via97
Building module oss_ymf7xx
depmod -a
mateusz@mateusz-desktop:/usr/lib/oss/build$ sudo soundoff
Killed
Killed
Cannot unload the OSS driver modules
mateusz@mateusz-desktop:/usr/lib/oss/build$ sudo soundon
OSS is already loaded.
mateusz@mateusz-desktop:/usr/lib/oss/build$ osstest
Unicestwiony
mateusz@mateusz-desktop:/usr/lib/oss/build$ sudo ossdevlinks -v -r
mateusz@mateusz-desktop:/usr/lib/oss/build$

[cesium]

Well, the modules weren't actually unloaded per soundoff output. I hate to say this, but perhaps try a reboot if you haven't already rebooted since that output and then test again (the new build would be already loaded, so no need for soundon/soundoff then)? (Typically, soundoff fails to unload because something is using the card, and we could kill it and then unload, but here there was a crash instead judging by the 'Killed' output).

If you have rebooted since then, well, hmm.. paste 'uname -a' output. I'm curious to see which kernel this is.

[Matti]

I've solved that problem. The kernel modules were builded, but not correctly. If you looked at the output of my lsmod you would see that many modules were loaded as [permanent] which is not the way it should be. Ubuntu kernel packagers made that mistake before and it was the Virtualbox errors that gave me an idea for the fix. I've found the solution in this bug report of Virtualbox bugzilla Ticket #9891 (closed defect: invalid) vbox kernel module load fail.

I had to make a chroot environment install the kernel headers (linux-headers-3.0.0-19, linux-headers-3.0.0-19-generic) than install the oss package which failed because unmet dependencies. This is expected you should issue the apt-get -f install command and then the installation will complete. If you will get errors about oss directory just create them in /lib/modules/3.0.0-19-generic it's kernel/oss folders. Now you have to copy modules builded in chroot to your actual root environment. The next thing is to reboot the system so the bad modules can be unloaded and those that you builded in chroot could be loaded. Know you have to install Open Sound System again so the appropriate symlinks will be created. This will of course result in bad modules again so you have to copy the good ones from chroot and reboot the system. Know you are finally done. Everything works as intended.


The "FIX" step by step:

1. You can find chroot creation instructions here: https://help.ubuntu.com/community/DebootstrapChroot
sudo apt-get install debootstrap schroot

2. Create a chroot config (refer below for my actual config): sudo nano /etc/schroot/chroot.d/oneiric_i386.conf

3. Create the actual chroot: sudo mkdir -p /srv/chroot/oneiric_i386
sudo debootstrap --variant=buildd --arch=i386 oneiric /srv/chroot/oneiric_i386 http://archive.ubuntu.com/ubuntu

4. Enter the chroot: schroot -c oneiric_i386 -u root

5. Install your kernel headers (note: these might be different for you): apt-get install linux-headers-3.0.0-19 linux-headers-3.0.0-19-generic

6. Install Open Sound System inside the chroot (note: this will 'fail'): dpkg -i oss-linux-4.2-2006_i386.deb

7. Fix the deps: apt-get -f install

8. At this point you should have the modules in /srv/chroot/lib/modules/$(uname -r)/kernel/oss (they might also be modprobed already - check lsmod)

9. Copy these into your actual system's root - /lib/modules/$(uname -r)/kernel/oss

10. Install Open Sound package in actual system: sudo dpkg -i oss-linux-4.2-2006_i386.deb

11. Reboot the computer and repeat step 9.

12. Reboot again and listen to your music