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@xxxxxxxxxxx> 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@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
-- Paul E. Johnson Professor, Political Science 1541 Lilac Lane, Room 504 University of Kansas
