devfs_mk_cdev question
From: watermodem
Date: Thu Dec 04 2003 - 19:31:39 EST
I am a litte perplexed. Is this error message important?
I am running linux-2.6.0-test11 on a modified Mandrake 9.2 rc2 release.
The sound card is playing as I type but on boot I saw:
[
Dec 4 16:44:27 dali kernel: Advanced Linux Sound Architecture Driver
Version 0.9.7 (Thu Sep 25 19:16:36 20
03 UTC).
Dec 4 16:44:27 dali kernel: request_module: failed /sbin/modprobe --
snd-card-0. error = -16
Dec 4 16:44:27 dali kernel: ALSA device list:
Dec 4 16:44:27 dali kernel: No soundcards found.
]
but lsmod shows:
[
Module Size Used by
snd_emu10k1 97572 -
snd_rawmidi 25408 -
snd_ac97_codec 54852 -
snd_util_mem 4704 -
snd_hwdep 9568 -
nls_cp850 4800 -
ntfs 90188 -
tuner 15596 -
tvaudio 22668 -
bttv 140940 -
video_buf 22756 -
i2c_algo_bit 10280 -
btcx_risc 4808 -
evdev 10272 -
]
As I slowly work my way through the problems I see this:
[
Dec 4 16:45:29 dali kernel: devfs_mk_cdev: could not append to parent
for snd/hwC0D0
Dec 4 16:45:29 dali kernel: devfs_mk_cdev: could not append to parent
for snd/midiC0D0
Dec 4 16:45:29 dali kernel: devfs_mk_cdev: could not append to parent
for snd/pcmC0D3p
Dec 4 16:45:29 dali kernel: devfs_mk_cdev: could not append to parent
for snd/pcmC0D2c
Dec 4 16:45:29 dali kernel: devfs_mk_cdev: could not append to parent
for snd/pcmC0D1c
Dec 4 16:45:29 dali kernel: devfs_mk_cdev: could not append to parent
for snd/pcmC0D0p
Dec 4 16:45:29 dali kernel: devfs_mk_cdev: could not append to parent
for snd/pcmC0D0c
Dec 4 16:45:29 dali modprobe: FATAL: Module /dev/sound/mixer1 not found.
Dec 4 16:45:29 dali modprobe: FATAL: Module /dev/sound/mixer1 not found.
]
So I do a:
"tree /sys/class" and see:
[
/sys/class
|-- i2c-adapter
| `-- i2c-0
| |-- device -> ../../../devices/pci0000:00/0000:00:0b.0/i2c-0
| `-- driver -> ../../../bus/i2c/drivers/i2c_adapter
|-- i2c-dev
| `-- i2c-0
| |-- dev
| |-- device -> ../../../devices/pci0000:00/0000:00:0b.0
| `-- driver -> ../../../bus/pci/drivers/bttv
|-- input
|-- net
| |-- eth0
| | |-- addr_len
| | |-- address
| | |-- broadcast
| | |-- device -> ../../../devices/pci0000:00/0000:00:09.0
| | |-- driver -> ../../../bus/pci/drivers/e100
| | |-- features
| | |-- flags
| | |-- ifindex
| | |-- iflink
| | |-- mtu
| | |-- statistics
| | | |-- collisions
| | | |-- multicast
| | | |-- rx_bytes
| | | |-- rx_compressed
| | | |-- rx_crc_errors
| | | |-- rx_dropped
| | | |-- rx_errors
| | | |-- rx_fifo_errors
| | | |-- rx_frame_errors
| | | |-- rx_length_errors
| | | |-- rx_missed_errors
| | | |-- rx_over_errors
| | | |-- rx_packets
| | | |-- tx_aborted_errors
| | | |-- tx_bytes
| | | |-- tx_carrier_errors
| | | |-- tx_compressed
| | | |-- tx_dropped
| | | |-- tx_errors
| | | |-- tx_fifo_errors
| | | |-- tx_heartbeat_errors
| | | |-- tx_packets
| | | `-- tx_window_errors
| | |-- tx_queue_len
| | `-- type
| `-- lo
| |-- addr_len
| |-- address
| |-- broadcast
| |-- features
| |-- flags
| |-- ifindex
| |-- iflink
| |-- mtu
| |-- statistics
| | |-- collisions
| | |-- multicast
| | |-- rx_bytes
| | |-- rx_compressed
| | |-- rx_crc_errors
| | |-- rx_dropped
| | |-- rx_errors
| | |-- rx_fifo_errors
| | |-- rx_frame_errors
| | |-- rx_length_errors
| | |-- rx_missed_errors
| | |-- rx_over_errors
| | |-- rx_packets
| | |-- tx_aborted_errors
| | |-- tx_bytes
| | |-- tx_carrier_errors
| | |-- tx_compressed
| | |-- tx_dropped
| | |-- tx_errors
| | |-- tx_fifo_errors
| | |-- tx_heartbeat_errors
| | |-- tx_packets
| | `-- tx_window_errors
| |-- tx_queue_len
| `-- type
|-- scsi_device
|-- scsi_host
|-- tty
| |-- console
| | `-- dev
| |-- ptmx
| | `-- dev
| |-- tty
| | `-- dev
| |-- tty0
| | `-- dev
| |-- tty1
| | `-- dev
| |-- tty10
| | `-- dev
| |-- tty11
| | `-- dev
| |-- tty12
| | `-- dev
| |-- tty13
| | `-- dev
| |-- tty14
| | `-- dev
| |-- tty15
| | `-- dev
| |-- tty16
| | `-- dev
| |-- tty17
| | `-- dev
| |-- tty18
| | `-- dev
| |-- tty19
| | `-- dev
| |-- tty2
| | `-- dev
| |-- tty20
| | `-- dev
| |-- tty21
| | `-- dev
| |-- tty22
| | `-- dev
| |-- tty23
| | `-- dev
| |-- tty24
| | `-- dev
| |-- tty25
| | `-- dev
| |-- tty26
| | `-- dev
| |-- tty27
| | `-- dev
| |-- tty28
| | `-- dev
| |-- tty29
| | `-- dev
| |-- tty3
| | `-- dev
| |-- tty30
| | `-- dev
| |-- tty31
| | `-- dev
| |-- tty32
| | `-- dev
| |-- tty33
| | `-- dev
| |-- tty34
| | `-- dev
| |-- tty35
| | `-- dev
| |-- tty36
| | `-- dev
| |-- tty37
| | `-- dev
| |-- tty38
| | `-- dev
| |-- tty39
| | `-- dev
| |-- tty4
| | `-- dev
| |-- tty40
| | `-- dev
| |-- tty41
| | `-- dev
| |-- tty42
| | `-- dev
| |-- tty43
| | `-- dev
| |-- tty44
| | `-- dev
| |-- tty45
| | `-- dev
| |-- tty46
| | `-- dev
| |-- tty47
| | `-- dev
| |-- tty48
| | `-- dev
| |-- tty49
| | `-- dev
| |-- tty5
| | `-- dev
| |-- tty50
| | `-- dev
| |-- tty51
| | `-- dev
| |-- tty52
| | `-- dev
| |-- tty53
| | `-- dev
| |-- tty54
| | `-- dev
| |-- tty55
| | `-- dev
| |-- tty56
| | `-- dev
| |-- tty57
| | `-- dev
| |-- tty58
| | `-- dev
| |-- tty59
| | `-- dev
| |-- tty6
| | `-- dev
| |-- tty60
| | `-- dev
| |-- tty61
| | `-- dev
| |-- tty62
| | `-- dev
| |-- tty63
| | `-- dev
| |-- tty7
| | `-- dev
| |-- tty8
| | `-- dev
| |-- tty9
| | `-- dev
| |-- ttyS0
| | `-- dev
| |-- ttyS1
| | `-- dev
| |-- ttyS2
| | `-- dev
| |-- ttyS3
| | `-- dev
| |-- ttyS4
| | `-- dev
| |-- ttyS5
| | `-- dev
| |-- ttyS6
| | `-- dev
| `-- ttyS7
| `-- dev
|-- usb
|-- usb_host
| `-- usb1
| |-- device -> ../../../devices/pci0000:00/0000:00:07.2
| `-- driver -> ../../../bus/pci/drivers/uhci_hcd
`-- video4linux
|-- vbi0
| |-- dev
| |-- device -> ../../../devices/pci0000:00/0000:00:0b.0
| |-- driver -> ../../../bus/pci/drivers/bttv
| `-- name
`-- video0
|-- card
|-- dev
|-- device -> ../../../devices/pci0000:00/0000:00:0b.0
|-- driver -> ../../../bus/pci/drivers/bttv
`-- name
]
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