Configuration:

Motherboard Gigabyte GA-81915ME-GL
Video Geforce FX 5200 256 Mb
HD SATA Sansung
1 Gb RAM
Kernel 2.6.11 - Kanotix-7 KDE 3.3.2

Symptom 1: System loads well but freezes after some minutes. Can't even ctrl+alt+f1 to access command line. If USB controller is disabled on the motherboard's bios this symptom disapears.

Symptom 2: Alsaconf detects well the sound card but it seems muted. On kmix there is a control, with the name of the sound card, at the right side of the window, wich has no "LED-Like" button on top to toggle mute ON and OFF. There is just a logo (an image) above the volume slider. As a result the system has no sound at all.

The command: play /usr/share/sounds/KDE_Startup_2.ogg
Works very well and I can hear the sound with no problem.

Even with Alsaconf detecting the right sound card there is no sound on KDE.

The command: cat /etc/proc/asound/modules
-------------> 0 snd_intel8x0
The command: cat /etc/proc/asound/cards
-------------> intel ICH6 with ALC655 at 0xf3001000, irq 9

The command: lsmod (just sound modules):
snd_intel8x0 27712 1
snd_ac97_codec 73980 1 snd_intel8x0
snd_pcm_oss 46368 0
snd_mixer_oss 16128 1 snd_pcm_oss
snd_pcm 77192 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer 20868 2 snd_seq,snd_pcm
snd 46596 13 snd_seq_dummy,snd_seq_oss,snd_rawmidi,snd_seq,snd_seq_device,snd_intel8x0,snd_ac97_codec,snd_pcm_oss ,snd_mixer_oss,snd_pcm,snd_timer
soundcore 7264 1 snd
snd_page_alloc 7428 2 snd_intel8x0,snd_pcm

The command: kudzu -p | grep AUDIO -A8 (just the driver):
------------------> Driver: snd_intel8x0

On /dev there are dsp , dsp0, dsp1, dsp2 and dsp3
hummmm.....What is that snd_seq_dummy module? Is it necessary?

Questions:
1 - For that sound card which modules must be loaded?
2 - Why play works and Alsa doesn't?
3 - Is there something to fix the USB problem without disabling it on bios?

1. If you can hear something your card is working
2. KDE uses arts to play sounds arts is a sound mixer
Arts uses alsa or ogg or other to achive sound.

again if you hear sound using any program your sound is setup this is not a kernel/modules issue its a KDE issue and arts.



3. change bios to NON pnp os. and see if it still freezes im thinking this is irq or other wierdness.
try updateing kernel to latesest.

check kernel options make sure usb 2.0 support is there.


post what usb controler is on your stuff there might be more helpfull.

This is the exit of the command lspci -v :
-------------------------------------------------------------
0000:00:00.0 Host bridge: Intel Corp. 915G/P/GV Processor to I/O Controller (rev 0e)
Subsystem: Giga-byte Technology: Unknown device 2580
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] #09 [2109]

0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev d5) (prog-if 01 [Subtractive decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 00007000-0000afff
Memory behind bridge: f0000000-f2ffffff
Prefetchable memory behind bridge: 00000000e0000000-00000000eff00000
Capabilities: [50] #0d [0000]

0000:00:1e.2 Multimedia audio controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 05)
Subsystem: Giga-byte Technology: Unknown device a002
Flags: bus master, medium devsel, latency 0, IRQ 17
I/O ports at b800 [size=256]
I/O ports at bc00 [size=64]
Memory at f3001000 (32-bit, non-prefetchable) [size=512]
Memory at f3002000 (32-bit, non-prefetchable) [size=256]
Capabilities: [50] Power Management version 2

0000:00:1f.0 ISA bridge: Intel Corp. 82801FB/FR (ICH6/ICH6R) LPC Interface Bridge (rev 05)
Flags: bus master, medium devsel, latency 0

0000:00:1f.1 IDE interface: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 05) (prog-if 8a [Master SecP PriP])
Subsystem: Giga-byte Technology: Unknown device 266f
Flags: bus master, medium devsel, latency 0, IRQ 18
I/O ports at <unassigned>
I/O ports at <unassigned>
I/O ports at <unassigned>
I/O ports at <unassigned>
I/O ports at f000 [size=16]

0000:00:1f.2 IDE interface: Intel Corp. 82801FB/FW (ICH6/ICH6W) SATA Controller (rev 05) (prog-if 8f [Master SecP SecO PriP PriO])
Subsystem: Giga-byte Technology: Unknown device 2651
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19
I/O ports at c800 [size=8]
I/O ports at cc00 [size=4]
I/O ports at d000 [size=8]
I/O ports at d400 [size=4]
I/O ports at d800 [size=16]
Capabilities: [70] Power Management version 2

0000:00:1f.3 SMBus: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 05)
Subsystem: Giga-byte Technology: Unknown device 266a
Flags: medium devsel, IRQ 11
I/O ports at 0500 [size=32]

0000:01:00.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1) (prog-if 00 [VGA])
Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 5
Memory at f0000000 (32-bit, non-prefetchable) [size=16M]
Memory at e0000000 (32-bit, prefetchable) [size=256M]
Capabilities: [60] Power Management version 2
Capabilities: [44] AGP version 3.0

0000:01:01.0 Modem: Unknown device 0057:3052 (rev 04) (prog-if 00 [Generic])
Subsystem: Unknown device 0057:3020
Flags: bus master, stepping, medium devsel, latency 32, IRQ 20
Memory at f2000000 (32-bit, non-prefetchable) [size=8K]
I/O ports at 6800 [size=256]
Capabilities: [80] Power Management version 2

0000:01:05.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
Subsystem: Giga-byte Technology GA-7VM400M Motherboard
Flags: bus master, medium devsel, latency 64, IRQ 21
I/O ports at 9000 [size=256]
Memory at f2002000 (32-bit, non-prefetchable) [size=256]
Capabilities: [50] Power Management version 2
---------------------------------------------------------

As I have to disable the usb on Bios, I can't see many things after the system is running.