odd problems

[gaf-mNDKBlG2WHs at public.gmane.org (Jerry Feldman)]

Reinstalling the OS is not a good solution as a subsequent kernel update =

is liable to cause the same issues. Recently there has been better=20
support for USB audio devices.

The first thing to do is to look at the kernel boot messages. The best=20
way to do this is to first clear them:
dmesg -c
Then reboot. You should see the kernel detections. =20
Preferences/Sound/Devices might help.

On 02/13/2009 12:40 PM, John Abreau wrote:
> I'm not sure about the scanner, but I had a similar problem with audio
> a couple months ago, on a laptop with Fedora 10. When I first installed=

> Fedora 10 in November, audio worked fine, but one day it failed after
> a set of updates.
>
> In the end, it turned out to be related to my laptop's built-in webcam,=

> which has an internal microphone. Apparently it's wired up as a USB
> device, and in November it was unsupported in the kernel.
>
> A kernel update in December suddenly provided support for the webcam,
> at which point it became the primary audio device.  ALSA had hard-wired=

> the normal sound card to be audio device 0 in /etc/modprobe.conf,, and
> when it tried to initialize the device at boot time, the webcam microph=
one
> had already grabbed the spot for audio device 0, and the sound card
> initialization failed as a result.
>
> I think I deleted the sound card from /etc/modprobe.conf, and after
> rebooting and then updating the audio preferences, sound was
> working again.
>
> If the scanner is USB, then maybe its problem is also related to
> other USB hardware that only became supported recently.
>
>
>
> On Fri, Feb 13, 2009 at 12:16 PM, dan moylan <jdm-LPA1KyJyIuz1P9xLtpHBDw at public.gmane.org> wrote:
>  =20
>> running ubuntu 8.10 on panasonic cf50 laptop.  mid january,
>> all was well.  then sometime at the beginning of february,
>> three disconnects occurred, whether related or not, or at
>> the same exact time, i can't say.
>>
>>  - audio ceased to work; running gnome-volume-control
>>    produced an error window saying "No volume control
>>    GStreamer plugins and/or devices found."
>>    the "services settigs" gui shows a white box beside
>>    "audio settings managemnt (alsa utils)" and will not
>>    accept a check.
>>  - the scanner function on the hp4580 printer/fax/scanner
>>    ceased to work -- xsane doesn't find any scanner; the
>>    printer continues to work fine, and when plugged into
>>    a different computer, the scanner works fine.
>>  - the login gui no longer appears, so i login via a text
>>    screen, and use startx -- no biggie, but what ever
>>    became of inittab?
>>
>> these things seem so unrelated ... and i can think of no
>> action i took that might have triggered them, but who knows?
>>
>> my first inclination is to reinstall the operating system,
>> but i thought i'd first ask if anyone has any better
>> suggestions.  tia.
>>
>> dan
>>
>> j. daniel moylan
>> 84 harvard ave
>> brookline, ma 02446-6202
>> 617-232-2360 (tel)
>> 810-454-1823 (fax)
>> jdm-LPA1KyJyIuz1P9xLtpHBDw at public.gmane.org
>> www.moylan.us
>> [death to html bloat!]
>> _______________________________________________
>> Discuss mailing list
>> Discuss-mNDKBlG2WHs at public.gmane.org
>> http://lists.blu.org/mailman/listinfo/discuss
>>
>>    =20
>
>
>
>  =20


--=20
Jerry Feldman <gaf-mNDKBlG2WHs at public.gmane.org>
Boston Linux and Unix
PGP key id: 537C5846
PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB  CA3B 4607 4319 537C 5846