When I ran the GENERIC kernel, message that stated I cannot load osscore.ko
module stated

Starting Open Sound System
osscore: Open Sound System conflicts with FreeBSD driver
osscore: Please remove sound(4) from the kernel or unload it
module_register_init: MOD_LOAD (osscore, 0xffffffff818b4010, 0) error 16
kldload: can't load /usr/local/lib/oss/modules/osscore.ko: Exec format error
Loading the osscore module failed

Maybe this weill be useful too.


2013/6/11 Jože Zobec <jozze.z...@gmail.com>

> The kernel doesn't build with snd_uaudio.ko if there is sound.ko missing.
>
> GENERIC kernel cannot load modules osscore.ko and oss_hdaudio.ko with
> sound.ko either built in the kernel or loaded as a module. When I tried to
> load snd_uaudio.ko manually, with both osscore.ko and oss_hdaudio.ko
> loaded, exactly the same happened, as if I plugged in my camera.
>
> I plugged in the camera after 50s of running (practically immediately
> after boot). This is the kernel message on my monitor. I enabled
> dumpdev="AUTO" in my /etc/rc.conf, to get the full output, but there was no
> file in /var/log showing anything, so I just wrote here what I managed to
> see on the screen:
>
> (ada0:ata5:0:0:0): Error 5, Retries exahusted
> (ada0:ata5:0:0:0): Synchronize cache failed
> (ada1:ata5:0:1:0): FLUSHCACHE48. ACB: ea 00 00 00 00 40 00 00 00 00 00 00
> (ada1:ata5:0:1:0): CAM status: CCB request is in progress
> (ada1:ata5:0:1:0): Error 5, Retries exhausted
> (ada1:ata5:0:1:0): Synchronize cache failed
> Dumping 320 out of 3052 MB:kernel trap 12 with interrupts disabled
>
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 7; apic id = 07
> fault virtual address        = 0x0
> fault code                       = supervisor read data, page not present
> instruction pointer          = 0x20:0xffffffff8028020c
> stack pointer                  = 0x28:0xffffff80db5de890
> frame pointer                 = 0x28:0xffffff80db5de940
> code segment                = base 0x0, limit 0xfffff, type 0x1b
>                                       = DPL 0, pres 1, long 1, def32 0,
> gran 1
> processor eflags             = resume, IOPL = 0
> current process              = 1526 (kldload)
> trap number                  = 12
> panic: page fault
> cpuid = 7
> Uptime: 50s
>
>
>
>
> 2013/6/11 Jože Zobec <jozze.z...@gmail.com>
>
>> Yes, I built without snd_uaudio.ko.
>>
>> In order to use the port audio/oss, I had to disable the sound.ko, so I
>> had to exclude it from the kernel, and add it as a module.
>>
>> I agree, that snd_uaudio.ko brought improvements. I like it a lot. But
>> snd_hda.ko, which I use to listen to music make those scratchy sounds all
>> the time, where the music should be crystal clear.
>>
>> I will try now with the GENERIC kernel, and the kernel without sound.ko,
>> and snd_hda.ko, but with snd_uaudio.ko enabled and see what will happen.
>>
>> Jože
>>
>>
>> 2013/6/11 Hans Petter Selasky <h...@bitfrost.no>
>>
>>> On 06/10/13 22:39, Jože Zobec wrote:
>>>
>>>> Dear all,
>>>>
>>>> my name is Jože Zobec. I am using Logitech Webcam C525. So fare I have
>>>> been
>>>> able to use it flawlessly with drivers tat came with the base system.
>>>> However, those same drivers fared rather poorly when I used them with
>>>> audio/musicpd, so I tried to use audio/oss.
>>>>
>>>> So far so good. There has been a great improvement on the output quality
>>>> given by musicpd, but my webcam doesn't work with these modules --
>>>> kernel
>>>> automatically tries to create a /dev/dsp* device. To do that, it
>>>> requires
>>>> sound.ko module, which conflicts with module osscore.ko, supplied by the
>>>> audio/oss port. Not knowing what to do, it starts to panic.
>>>>
>>>> Is there a way to use multimedia/webcamd with audio/oss, or is this
>>>> unsupported? I am running FreeBSD 9.1-STABLE #3 r251600.
>>>>
>>>> Thank you for your time,
>>>>
>>>
>>> Hi,
>>>
>>> Did you build a kernel without snd_uaudio?
>>>
>>> Also note that 9-stable has several USB audio improvements.
>>>
>>> --HPS
>>>
>>>
>>
>
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