ever have trouble with headphone recognition?

Tue Jun 20 21:59:26 UTC 2006

On 6/20/06, Paul Johnson <pauljohn32 at gmail.com> wrote:
>
> This is a laptop computer.  I thought that was obvious when I said it
> is a laptop.  The built in speakers are not "plugged in" to the back.
> Did I mention this is a laptop?
>
> pj
>
> On 6/20/06, Jeff Vian <jvian10 at charter.net> wrote:
> > On Mon, 2006-06-19 at 23:23 -0600, Paul Johnson wrote:
> > > I have a Dell Latitude D820 and in order to make sound work at all, I
> > > had to install the newer Alsa drivers & utilties as described on the
> > > RedHat help site.
> > > http://people.redhat.com/stransky/alsa/
> > >
> > > This laptop has an Intel southbridge architecture that uses the driver
> > > snd-hda-intel.
> > >
> > > Here is the problem.  If the laptop starts and no headphones are
> > > plugged in, then inserting the headphones does nothing--sound keeps
> > > coming out from speakers.
> > >
> > > Conversely, if  I put in the headphones before starting the comptuer,
> > > then the headphones do work, but yanking them does not make the
> > > speakers work.
> > >
> > I am not sure what you mean here about speakers and headphones.  On my
> > systems the speakers (front/stereo) plug into the same jack as the
> > headphones on the rear.  If the speakers work then the headphones will
> > work.
> >
> > If, on the other hand, you are using the speakers in the rear jack and
> > plugging the headphones in the front jack then this may be an issue with
> > the way the front panel audio is connected to the audio ports on the
> > mobo.  With a front panel properly connected it should not matter.  The
> > front panel jack will disable the rear jack when plugged in, but should
> > never depend on which is connected at boot time to determine which is
> > enabled.
> >
> > > The alsa mixer does not show the headphones device, at all. None of
> > > the gnome mixer tools   or kde mixer tools show more devices.
> > >
> > Nothing I know of explicitly lists the headphone device.  It is after
> > all a speaker set and plugs into the same jack on the sound card.
> > Some have had problems with the external speakers never working.
> >
> > One thing I have found and has been repeated here by many is that there
> > is an "external amplifier" switch in the alsa volume control panel.
> > Sometimes this is off and the speakers will not work so turning it on
> > enables the speakers. This does not seem to be what you describe
> > however.
> >
> > >From reading the way you describe it I suspect the problem with cabling
> > for the front panel audio, but only you can answer that.
> >
> > > I've stumbled throught a lot of Alsa documentation and there is a hint
> > > that specifying the model= option in  modules.conf might help, but I
> > > don't understand the jargon for figuring out what model I have.  They
> > > offer weird names like "3stack" and such.  Do you know what model to
> > > use?  Here's all the info I have:
> > >
> > > # aplay -l
> > > **** List of PLAYBACK Hardware Devices ****
> > > card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
> > >   Subdevices: 1/1
> > >   Subdevice #0: subdevice #0
> > > card 0: Intel [HDA Intel], device 1: STAC92xx Digital [STAC92xx
> Digital]
> > >   Subdevices: 1/1
> > >   Subdevice #0: subdevice #0
> > >
> > > # cat /proc/asound/cards
> > >  0 [Intel          ]: HDA-Intel - HDA Intel
> > >                       HDA Intel at 0xdfffc000 irq 21
> > >
> > >
> > > # /sbin/lspci -vv
> > >
> > > ....
> > > 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
> > > Definition Audio Controller (rev 01)
> > >         Subsystem: Dell Unknown device 01cc
> > >         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> > > ParErr- Stepping- SERR+ FastB2B-
> > >         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
> > > <TAbort- <MAbort- >SERR- <PERR-
> > >         Latency: 0, Cache Line Size 10
> > >         Interrupt: pin A routed to IRQ 21
> > >
> > >         Interrupt: pin A routed to IRQ 21
> > >         Region 0: Memory at dfffc000 (64-bit, non-prefetchable)
> [size=16K]
> > >         Capabilities: [50] Power Management version 2
> > >                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA
> > > PME(D0+,D1-,D2-,D3hot+,D3cold+)
> > >                 Status: D0 PME-Enable- DSel=0 DScale=0 PME-
> > >         Capabilities: [60] Message Signalled Interrupts: 64bit+
> > > Queue=0/0 Enable-
> > >                 Address: 0000000000000000  Data: 0000
> > >         Capabilities: [70] Express Unknown type IRQ 0
> > >                 Device: Supported: MaxPayload 128 bytes, PhantFunc 0,
> ExtTag-
> > >                 Device: Latency L0s <64ns, L1 <1us
> > >                 Device: Errors: Correctable- Non-Fatal- Fatal-
> Unsupported-
> > >                 Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
> > >                 Device: MaxPayload 128 bytes, MaxReadReq 128 bytes
> > >                 Link: Supported Speed unknown, Width x0, ASPM unknown,
> Port 0
> > >                 Link: Latency L0s <64ns, L1 <1us
> > >                 Link: ASPM Disabled CommClk- ExtSynch-
> > >                 Link: Speed unknown, Width x0
> > >         Capabilities: [100] Virtual Channel
> > >         Capabilities: [130] Unknown (5)
> > > ...
> > >
> > >
> > >
> > >
> > > --
> > > Paul E. Johnson
> > > Professor, Political Science
> > > 1541 Lilac Lane, Room 504
> > > University of Kansas
> > >
> >
> > --
> > fedora-list mailing list
> > fedora-list at redhat.com
> > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
> >
>
>
> --
> Paul E. Johnson
> Professor, Political Science
> 1541 Lilac Lane, Room 504
> University of Kansas
>
> --
> fedora-list mailing list
> fedora-list at redhat.com
> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
>

I have a Dell Latitude D820 and all I did was follow the instructions on
this website http://mysite.verizon.net/vze2j8bn/D820-FC5.html to get my
sound working.  I can switch between headphones with out any problems.

Currently running Kernel 2.6.16-1.2133_FC5smp, and the only problem I have
is I got the BCM4311 wireless card which I am having a few little problems
with.

-- 
Terry Snyder Jr
Computer Support Specialist
http://www.personal.psu.edu/tes215
Linux (Red Hat, Fedora Core), Windows, Mac
Fedora Core 5  3 users,  load average: 0.19, 0.30, 0.28
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20060620/c38d78de/attachment-0001.htm>