thanks for the reply. Some more info: - system is RH Enterprise AS 4 update 4 - the soundcard is in a 64-bit PCI-X slot (so few soundcards fit at all) - pcm with ice1712 is working fine - I disabled /proc/sys/kernel/panic_on_oops, but it still rebooted the same way. Is there another way to prevent rebooting on panic or so? - by using printk with serial console, I could trace the reboot to occur at the very first outb() call in mpu401_uart.c:64 with data 0, addr 0x304C
Is this likely to be a hardware incompatibility?
On a 3rd machine with dual Xeon (same OS, same PCI slots, same soundcard), the computer freezes after successfully receiving a few MIDI bytes (between 4 and 30 bytes). Any hints where I can start debugging such a lock-up?
Thanks, Florian
On 4/17/2007 12:33 PM, Takashi Iwai wrote:
At Fri, 13 Apr 2007 21:16:55 +0200, Florian wrote:
Hi,
on one particular machine, an IBM workstation (Intellistation A Pro with dual opteron 250, 4GB RAM), opening a rawmidi input port on an M-Audio 2496 card will cause an immediate reboot of the machine. I've tried with different SMP kernels and different ALSA versions (including 1.0.14rc3), but always the same. Syslog does not show anything.
Using a USB MIDI interface works fine. Also, MIDI input on a similar workstation (Intellistation Z Pro, dual xeon, 1GB RAM) with M-Audio 2496 works without problems.
Any ideas?
Hm, this sounds like a problem of ice1712 driver, not the rawmidi core side. Though, the symptom is a bit puzzling; most of mpu401 problems is the lock-up rather than an immediate reboot.
Or, do you set up the machine to do automatic reboot at a kernel panic?
Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel