ever have trouble with headphone recognition?
Paul Johnson
pauljohn32 at gmail.com
Tue Jun 20 05:23:51 UTC 2006
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.
The alsa mixer does not show the headphones device, at all. None of
the gnome mixer tools or kde mixer tools show more devices.
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
More information about the users
mailing list