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Opened 7 years ago

Closed 7 years ago

#7140 closed defect (fixed)

unknown symbols errors when using OSS or ALSA USB Audio devices in official 10.03 Backfire builds

Reported by: ldolse Owned by: nico
Priority: normal Milestone: Backfire 10.03.1
Component: kernel Version: Backfire 10.03
Keywords: audio Cc:

Description

USB Audio devices fail to work in the 2.6 backfire builds on broadcom hardware, not sure if other architectures are affected. A large number of 'unknown symbol' errors relating to audio functions are reported by dmesg upon plugging in an audio device.

Note building your own backfire image from svn with audio modules linked at compile time works correctly, seems to specifically be a problem with the build config for the official builds.

Hardware is Asus WL-500gP V2, another user reports the same problem on the wgt634u. See here for further backround:
https://forum.openwrt.org/viewtopic.php?pid=106601

Key modules installed:
kmod-usb-core
kmod-usb2
kmod-usb-ohci
kmod-sound-core
kmod-usb-audio

dmesg output attached

Attachments (1)

dmesg_output.txt (14.4 KB) - added by ldolse 7 years ago.
dmesg output - unknown symbols, audio related

Download all attachments as: .zip

Change History (4)

Changed 7 years ago by ldolse

dmesg output - unknown symbols, audio related

comment:1 Changed 7 years ago by nico

Can you confirm you're still experiencing this issue on 10.03 final ?

comment:2 Changed 7 years ago by nico

  • Component changed from base system to kernel
  • Owner changed from developers to nico
  • Status changed from new to assigned
  • Version changed from backfire 10.03 RC1 to Backfire 10.03

Confirmed on an Asus WL-HDD (brcm47xx) running 10.03.

It seems 'kmod-sound-core' depends on 'kmod-input-core'.

root@OpenWrt:~#  logread
...
Jan  1 23:59:55 OpenWrt user.warn kernel: snd: Unknown symbol input_allocate_device
Jan  1 23:59:55 OpenWrt user.warn kernel: snd: Unknown symbol input_unregister_device
Jan  1 23:59:55 OpenWrt user.warn kernel: snd: Unknown symbol input_free_device
Jan  1 23:59:55 OpenWrt user.warn kernel: snd: Unknown symbol input_register_device
Jan  1 23:59:55 OpenWrt user.warn kernel: snd: Unknown symbol input_set_capability
Jan  1 23:59:55 OpenWrt user.warn kernel: snd: Unknown symbol input_event
...

comment:3 Changed 7 years ago by nico

  • Resolution set to fixed
  • Status changed from assigned to closed

Fixed in [20901] (trunk) & [20902] (backfire)

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