I run "sndconfig", and it could found my sound card cs4218, but reported:
The following error occurred running the modprobe program:
¨¢ ¨¢
¨¢ /lib/modules/2.4.20-8/kernel/drivers/sound/cs4281/cs4281.o: ¨¢
¨¢ init_module: No such device ¨¢
¨¢ /lib/modules/2.4.20-8/kernel/drivers/sound/cs4281/cs4281.o: ¨¢
¨¢ insmod ¨¢
¨¢ /lib/modules/2.4.20-8/kernel/drivers/sound/cs4281/cs4281.o ¨¢
¨¢ failed ¨¢
¨¢ /lib/modules/2.4.20-8/kernel/drivers/sound/cs4281/cs4281.o: ¨¢
¨¢ insmod sound-slot-0 failed

Hi,
1. Do you have your kernel sources installed in /usr/src/linux?
2. What is the result of 'modprobe cs4281'
3. Make/model of your computer (laptop?)
4. Please post results of 'lspci -v'
(see http://btr0xw.rz.uni-bayreuth.de/cgi...npages/lspci/8)
5. Also, take a look at http://www.alsa-project.org/ for even more hints and tricks.

Hi,
1.Yes, I can have;
2.nothing displayed by "modprobe cs4281";
3.My model is IBM X21 Laptop
4.Following is the result of "lspci -v":

00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
Flags: bus master, medium devsel, latency 64
Memory at f8000000 (32-bit, prefetchable) [size=64M]
Capabilities: [a0] AGP version 1.0

00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 128
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
I/O behind bridge: 00002000-00002fff
Memory behind bridge: f4100000-f5ffffff

00:07.0 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
Flags: bus master, medium devsel, latency 0

00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01) (prog-if 80 [Master])
Flags: bus master, medium devsel, latency 64
I/O ports at 1800 [size=16]

00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01) (prog-if 00 [UHCI])
Flags: bus master, medium devsel, latency 64, IRQ 11
I/O ports at 1820 [size=32]

00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 03)
Flags: medium devsel, IRQ 9

00:08.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev 80)
Subsystem: IBM ThinkPad A/T/X Series
Flags: bus master, medium devsel, latency 168, IRQ 11
Memory at 50000000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=02, subordinate=04, sec-latency=176
Memory window 0: 10000000-103ff000 (prefetchable)
Memory window 1: 10400000-107ff000
I/O window 0: 00004000-000040ff
I/O window 1: 00004400-000044ff
16-bit legacy interface ports at 0001

00:08.1 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev 80)
Subsystem: IBM ThinkPad A/T/X Series
Flags: bus master, medium devsel, latency 168, IRQ 11
Memory at 50100000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=05, subordinate=07, sec-latency=176
Memory window 0: 10800000-10bff000 (prefetchable)
Memory window 1: 10c00000-10fff000
I/O window 0: 00004800-000048ff
I/O window 1: 00004c00-00004cff
16-bit legacy interface ports at 0001

00:0a.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 0c)
Subsystem: Intel Corp. EtherExpress PRO/100 SP Mobile Combo Adapter
Flags: bus master, medium devsel, latency 66, IRQ 11
Memory at f4010000 (32-bit, non-prefetchable) [size=4K]
I/O ports at 1840 [size=64]
Memory at f4020000 (32-bit, non-prefetchable) [size=128K]
Expansion ROM at <unassigned> [disabled] [size=64K]
Capabilities: [dc] Power Management version 2

00:0a.1 Serial controller: Lucent Microelectronics LT WinModem (rev 01) (prog-if 00 [8250])
Subsystem: Intel Corp.: Unknown device 2205
Flags: medium devsel, IRQ 11
I/O ports at 1810 [size=8]
Memory at f4011000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [dc] Power Management version 2

00:0b.0 Multimedia audio controller: Cirrus Logic Crystal CS4281 PCI Audio (rev 01)
Subsystem: IBM: Unknown device 0183
Flags: bus master, medium devsel, latency 64, IRQ 11
Memory at f4012000 (32-bit, non-prefetchable) [size=4K]
Memory at f4000000 (32-bit, non-prefetchable) [size=64K]
Capabilities: [40] Power Management version 2

01:00.0 VGA compatible controller: ATI Technologies Inc Rage Mobility P/M AGP 2x (rev 64) (prog-if 00 [VGA])
Subsystem: IBM: Unknown device 0182
Flags: bus master, stepping, medium devsel, latency 66, IRQ 11
Memory at f5000000 (32-bit, non-prefetchable) [size=16M]
I/O ports at 2000 [size=256]
Memory at f4100000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at <unassigned> [disabled] [size=128K]
Capabilities: [50] AGP version 1.0
Capabilities: [5c] Power Management version 1

Try this:
1. Post results of:
'modprobe snd-cs4281'

2. See http://www.alsa-project.org/alsa-doc...&module=cs4281
See the section on 'modprobe and kmod support', there might be some good information for you there. You might have to do some editing of your /etc/modules.conf file. Plenty of others have gotton the x20 to work fine which also has the cs4281 chip. See http://www.linux-on-laptops.com/ibm.html for more info.

OK, thank you! I'll try later.
Following is log when I tried "sndconfig":

Nov 3 16:11:34 qinfeng-ibm kernel: cs4281: version v1.30.32 time 18:00:15 Mar 13 2003
Nov 3 16:11:34 qinfeng-ibm kernel: PCI: Found IRQ 11 for device 00:0b.0
Nov 3 16:11:34 qinfeng-ibm kernel: PCI: Sharing IRQ 11 with 00:08.0
Nov 3 16:11:34 qinfeng-ibm kernel: PCI: Sharing IRQ 11 with 01:00.0
Nov 3 16:11:35 qinfeng-ibm kernel: cs4281: DLLRDY failed!
Nov 3 16:11:35 qinfeng-ibm kernel: cs4281: cs4281_hw_init() failed. Skipping part.
Nov 3 16:11:35 qinfeng-ibm kernel: cs4281: probe()- no device allocated
Nov 3 16:11:35 qinfeng-ibm kernel: cs4281: Unable to locate any cs4281 device with valid IDs 0x1013-0x6005

Also, when you reboot, please post anything to do with audio via 'dmesg' command.

When you installed your linux distrobution, you should also have enabled pnp (plug and play), take a look at this config, http://dag.wieers.com/howto/thinkpad...g-tp-x20-2.4.9 , it is older, but some of the same principles should work for you on sound (maybe the OSS will change), but pnp=m if you have that setting or something like it.