I am running a dual processor system with Redhat 7.2 and the Redhat
version of the 2.4.9-13 kernel. I have two sound cards, a AudioPCI
(ens1371) and a Audiophile 2496. I have installed many versions
of ALSA, the latest attempt with 0.9.0beta10 and I get similar results,
namely that the AudioPCI card works fine, while the 2496 not only
doesn't work, but completely freezes the machine. I'm hardly an expert,
but there is nothing that seems out of the ordinary with the compile,
modules.conf, lsmod, sndstat, or any other info that I've read about
on alsa-users. I've focused on one simple command that will freeze
the system: "alsactl store 1". I've used gdb to track down where the
freeze occurs and it is at line 148 in control_hw.c in the library. (See
below). Any help at all would be appreciated. It is very frustrating to
be constantly using the power switch when trying to debug.
--
* Dan Zaharevitz
* Camp Springs, MD
* [EMAIL PROTECTED]
Breakpoint 1, get_control (handle=0x805b0f0, id=0xbffff560,
top=0x8050080) at alsactl.c:170
170
err = snd_ctl_elem_read(handle, ctl);
(gdb) print *handle
$1 = {name = 0x8050050 "hw:1", type = SND_CTL_TYPE_HW, ops = 0x400978e0,
private_data = 0x8050040,
nonblock = 0, poll_fd = 4, async_handlers = {next = 0x805b108, prev =
0x805b108}}
(gdb) print *ctl
$1 = <incomplete type>
(gdb) step
snd_ctl_elem_read (ctl=0x805b0f0, control=0xbffff110) at control.c:248
248
assert(ctl && control && (control->id.name[0] || control->id.numid));
(gdb) step
247
{
(gdb) step
248
assert(ctl && control && (control->id.name[0] || control->id.numid));
(gdb) step
249
return ctl->ops->element_read(ctl, control);
(gdb) step
snd_ctl_hw_elem_read (handle=0x805b0f0, control=0xbffff110) at
control_hw.c:147
147
snd_ctl_hw_t *hw = handle->private_data;
(gdb) step
148
if (ioctl(hw->fd, SNDRV_CTL_IOCTL_ELEM_READ, control) < 0)
(gdb) print control
$1 = (snd_ctl_elem_value_t *) 0xbffff110
(gdb) print *control
$2 = {id = {numid = 1, iface = SNDRV_CTL_ELEM_IFACE_PCM, device = 0,
subdevice = 0,
name = "IEC958 CS8427 Input Status", '\000' <repeats 17 times>,
index = 0}, indirect = 0, value = { integer = {value = {0 <repeats
128 times>}, value_ptr = 0x0}, enumerated = {item = {
0 <repeats 128 times>}, item_ptr = 0x0}, bytes = {data = '\000'
<repeats 511 times>, data_ptr = 0x0},
iec958 = {status = '\000' <repeats 23 times>, subcode = '\000'
<repeats 146 times>, pad = 0 '\000',
dig_subframe = "\000\000\000"}}, reserved = '\000' <repeats 127
times>}
Issuing a step command at this point freezes the machine.
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