[2.6.3-rc2] System hangs after 'cat /proc/asound/card0/codec97#0/ac97#0-0'

From: Philipp Kolmann
Date: Thu Feb 12 2004 - 04:34:07 EST

[pls CC; not on list]

Hi!

Since I have also sometimes troubles with my Alsa i810 Audio, I issued
the command 'cat /proc/asound/card0/codec97#0/ac97#0-0' as suggested in
another Alsa i810 thread. But after that nothing happens anymore. I
can't Crtl-C the cat and the System hangs then complety after some
seconds.

It is still pingable, and numlock responds, but nothing gets printed on
the console.

Maybe I can be of assistance.

SW:

pkolmann@josefine:~$ sh ver_linux
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.

Linux josefine 2.6.3-rc2 #1 SMP Thu Feb 12 09:20:21 CET 2004 i686
GNU/Linux

Gnu C 3.3.2
Gnu make 3.80
util-linux 2.12
mount 2.12
module-init-tools 3.0-pre9
e2fsprogs 1.35-WIP
pcmcia-cs 3.1.33
quota-tools 3.10.
Linux C Library 2.3.2
Dynamic linker (ldd) 2.3.2
Procps 3.1.14
Net-tools 1.60
Console-tools 0.2.3
Sh-utils 5.0.91
Modules Loaded md5 ipv6 snd_seq_oss snd_seq_midi_event snd_seq
snd_pcm_oss snd_mixer_oss snd_intel8x0 snd_ac97_codec snd_pcm snd_timer
snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore
ehci_hcd usbcore quota_v2 nvidia sr_mod cdrom sg scsi_mod psmouse pcspkr
pcips2 evdev sk98lin unix

HW:

ASUS P4C800 Deluxe
lspci -v attached.

Thanks for the great work done so far
Philipp Kolmann
Austria

--
Life is not fair,
but the root password helps!
00:00.0 Host bridge: Intel Corp. 82875P Memory Controller Hub (rev 02)
Subsystem: Asustek Computer, Inc.: Unknown device 80f6
Flags: bus master, fast devsel, latency 0
Memory at f4000000 (32-bit, prefetchable) [size=64M]
Capabilities: <available only to root>

00:01.0 PCI bridge: Intel Corp. 82875P Processor to AGP Controller (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, fast devsel, latency 64
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
Memory behind bridge: fc900000-fe9fffff
Prefetchable memory behind bridge: dff00000-efefffff

00:1d.0 USB Controller: Intel Corp. 82801EB USB (rev 02) (prog-if 00 [UHCI])
Subsystem: Asustek Computer, Inc.: Unknown device 80a6
Flags: bus master, medium devsel, latency 0, IRQ 16
I/O ports at ef00 [size=32]

00:1d.1 USB Controller: Intel Corp. 82801EB USB (rev 02) (prog-if 00 [UHCI])
Subsystem: Asustek Computer, Inc.: Unknown device 80a6
Flags: bus master, medium devsel, latency 0, IRQ 19
I/O ports at ef20 [size=32]

00:1d.2 USB Controller: Intel Corp. 82801EB USB (rev 02) (prog-if 00 [UHCI])
Subsystem: Asustek Computer, Inc.: Unknown device 80a6
Flags: bus master, medium devsel, latency 0, IRQ 18
I/O ports at ef40 [size=32]

00:1d.7 USB Controller: Intel Corp. 82801EB USB2 (rev 02) (prog-if 20 [EHCI])
Subsystem: Asustek Computer, Inc.: Unknown device 80a6
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at febffc00 (32-bit, non-prefetchable) [size=1K]
Capabilities: <available only to root>

00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB PCI Bridge (rev c2) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=64
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fea00000-feafffff

00:1f.0 ISA bridge: Intel Corp. 82801EB LPC Interface Controller (rev 02)
Flags: bus master, medium devsel, latency 0

00:1f.1 IDE interface: Intel Corp. 82801EB Ultra ATA Storage Controller (rev 02) (prog-if 8a [Master SecP PriP])
Subsystem: Asustek Computer, Inc.: Unknown device 80a6
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 fc00 [size=16]
Memory at 40000000 (32-bit, non-prefetchable) [size=1K]

00:1f.3 SMBus: Intel Corp. 82801EB SMBus Controller (rev 02)
Subsystem: Asustek Computer, Inc.: Unknown device 80a6
Flags: medium devsel, IRQ 17
I/O ports at 0400 [size=32]

00:1f.5 Multimedia audio controller: Intel Corp. 82801EB AC'97 Audio Controller (rev 02)
Subsystem: Asustek Computer, Inc.: Unknown device 80f3
Flags: bus master, medium devsel, latency 0, IRQ 17
I/O ports at e800 [size=256]
I/O ports at ee80 [size=64]
Memory at febff800 (32-bit, non-prefetchable) [size=512]
Memory at febff400 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>

01:00.0 VGA compatible controller: nVidia Corporation NV11DDR [GeForce2 MX 100 DDR/200 DDR] (rev b2) (prog-if 00 [VGA])
Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 16
Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
Memory at e0000000 (32-bit, prefetchable) [size=128M]
Expansion ROM at fe9f0000 [disabled] [size=64K]
Capabilities: <available only to root>

02:03.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 80) (prog-if 10 [OHCI])
Subsystem: Asustek Computer, Inc.: Unknown device 808a
Flags: bus master, medium devsel, latency 64, IRQ 20
Memory at feaff800 (32-bit, non-prefetchable) [size=2K]
I/O ports at dc00 [size=128]
Capabilities: <available only to root>

02:05.0 Ethernet controller: 3Com Corporation 3c940 1000Base? (rev 12)
Subsystem: Asustek Computer, Inc.: Unknown device 80eb
Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 22
Memory at feaf8000 (32-bit, non-prefetchable) [size=16K]
I/O ports at d800 [size=256]
Capabilities: <available only to root>

02:0a.0 Unknown mass storage controller: Promise Technology, Inc. 20268 (rev 01) (prog-if 85)
Subsystem: Promise Technology, Inc. Ultra100TX2
Flags: bus master, 66Mhz, slow devsel, latency 64, IRQ 22
I/O ports at dfe0 [size=8]
I/O ports at df9c [size=4]
I/O ports at df90 [size=8]
I/O ports at df98 [size=4]
I/O ports at df80 [size=16]
Memory at feaf4000 (32-bit, non-prefetchable) [size=16K]
Expansion ROM at feae0000 [disabled] [size=16K]
Capabilities: <available only to root>