Sorry about the duplicate and cross post, but I am really stuck and have had no
The probe of my sound device on my laptop doesn't work -- it picks up the wrong device
(the USB bus controller). Can anyone point me in the right direction, at least?
I don't mind reading through source code, but I don't know where to start... Thanks!
----- Original Message -----
From: Peter Kurpis
To: [EMAIL PROTECTED]
Sent: Thursday, April 08, 2004 10:20 PM
Subject: problems reconfiguring kernel for sound
I have a strange problem installing 4.7 on my Toshiba 1135 laptop. (I need 4.7 for
To add support for my Avance AC97 audio hardware, I added the following lines:
device sbc0 at isa? irq 17 port 0x18C0 flags 0
(and tried various other permutations). The irq and port are from Windows, flags is 0
because there is apparently no DMA.
When I reboot, it seems that my USB controller has taken over /dev/pcm !
dmesg | pcm
pcm0: <Intel 82801DB (ICH4)> port 0x18c0-0x18ff,0x1c00-0x1cff mem
0xe0100800-0xe01008ff,0xe0100c00-0xe0100dff irq 10 at device 31.5 on pci0
Note that the IO port and memory addresses are right, but the IRQ is wrong (should be
17). I don't know what device 31.5 is, and don't know how to look it up. ?
After cd /dev; sh MAKEDEV snd0 , if I try cat someAudioFile.au > /dev/audio, it
prints gibberish on the screen, and I can't recover control.
What's even weirder is that when I comment out all the USB support lines (as well as
the smbus, ichsmb, and smb device lines I added for the 82801) in the configuration
file, and rebuild the kernel, the devices uhci0 through uhci2 and usb0 through usb2
*still* show up on bootup (and in dmesg)!
Can anyone help with ideas of what could be wrong, or where to start troubleshooting?
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