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An update:
I had originally marked this solved, but i was incorrect. I have had limited success getting this running by booting with the kernel paramater 'amd_iommu_intr=legacy' and setting quirks=0x0a for firewire_ohci.
While I had a couple of responses to bug reports and posts, no real solution has come to light.
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While trying to gather information for a bug report, I found that pulseaudio was set to start at login inside XFCE->settings/system and startup. By disabling this, the system appears to function properly even though the log shows several IO_PAGE_FAULTS.
Hi,
I'm using an Edirol FA-101 firewire audio interface. Since kernel 5.5.1, the system reboots when I turn on the interface or boot the machine with the interface turned on.
I have tried 5.5.1,5.5.2 and 5.5.3. I have downgraded to 5.4.15 which works properly.
Here's dmesg output relating to firewire and alsa leading up to a reboot:
Feb 15 14:44:18 xxx kernel: firewire_ohci 0000:05:00.0: enabling device (0080 -> 0083)
Feb 15 14:44:18 xxx kernel: firewire_ohci 0000:05:00.0: added OHCI v1.10 device as card 0, 4 IR + 8 IT contexts, quirks 0x11
Feb 15 14:44:18 xxx kernel: firewire_core 0000:05:00.0: created device fw0: GUID 0011223333666677, S400
Feb 15 14:44:18 xxx systemd-udevd[522]: controlC0: Process '/usr/bin/alsactl restore 0' failed with exit code 99.
Feb 15 14:44:18 xxx systemd-udevd[528]: controlC1: Process '/usr/bin/alsactl restore 1' failed with exit code 99.
Feb 15 15:01:10 xxx kernel: firewire_core 0000:05:00.0: phy config: new root=ffc1, gap_count=5
Feb 15 15:01:10 xxx kernel: firewire_core 0000:05:00.0: created device fw1: GUID 0040ab0000c20bc1, S400
Feb 15 15:01:13 xxx systemd-udevd[2083]: controlC2: Process '/usr/bin/alsactl restore 2' failed with exit code 99.
Feb 15 15:01:25 xxx kernel: firewire_ohci 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0001 address=0xd5738000 flags=0x00 kernel: firewire_ohci 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0001 address=0xd5738000 flags=0x0000]00]
Feb 15 15:01:30 xxx pulseaudio[1330]: E: [alsa-source-BeBoB] alsa-source.c: ALSA woke us up to read new data from the device, but there was actually nothing to read.
Feb 15 15:01:30 xxx pulseaudio[1330]: E: [alsa-source-BeBoB] alsa-source.c: Most likely this is a bug in the ALSA driver 'snd_bebob'. Please report this issue to the ALSA developers.
Feb 15 15:01:30 xxx pulseaudio[1330]: E: [alsa-source-BeBoB] alsa-source.c: We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.It's difficult to get good information because they system generally reboots, but I have seen a large number of 'Event logged [IO_PAGE_FAULT' messages which were minimal or not present in 5.4.15
I am assuming this is a kernel bug but I'm not quite sure how or where to report it.
Thanks for any pointers
Steve
Last edited by morrisas47 (2020-05-08 14:07:13)
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