Bug 111711 - IOMMU Xonar Essence STX causes issues
Summary: IOMMU Xonar Essence STX causes issues
Status: RESOLVED OBSOLETE
Alias: None
Product: Drivers
Classification: Unclassified
Component: Sound(ALSA) (show other bugs)
Hardware: x86-64 Linux
: P1 high
Assignee: virtualization_kvm
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-02-02 02:05 UTC by bellamorte42
Modified: 2017-05-04 07:19 UTC (History)
2 users (show)

See Also:
Kernel Version: 4.4
Subsystem:
Regression: No
Bisected commit-id:

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Description bellamorte42 2016-02-02 02:05:32 UTC 
I decided to post this bug here because AFAIK there haven't any real changes to snd-virtuoso and this bug only occurs with IOMMU enabled.  This issue occurs during normal operation (not running a VM).  Attempting to use the xonar essence results in about 2000 lines of dmesg repeating the following:

[   38.646702] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100000 flags=0x0050]
[   38.646707] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100040 flags=0x0050]
[   38.646709] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100000 flags=0x0050]
[   38.646710] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100040 flags=0x0050]
[   38.646711] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100000 flags=0x0050]
[   38.646713] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100040 flags=0x0050]
[   38.646714] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100000 flags=0x0050]
[   38.646715] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100040 flags=0x0050]

This also causes any video playback to freeze.  I get about 2 frames before that happens.

This issue was not present under 4.1, 4.2, or 4.3.  I think it was 4.4rc3 I tested when I fist saw it but I did not test the earlier rcs.
Comment 1 Alex Williamson 2016-02-02 02:16:11 UTC 
Drivers/Sound or Drivers/PCI are probably much more appropriate categories for this.
Comment 2 Clemens Ladisch 2016-04-02 10:44:18 UTC 
How did you resolve this?
Comment 3 bellamorte42 2016-04-05 00:34:13 UTC 
As posted above, "Drivers/Sound or Drivers/PCI are probably much more appropriate categories for this."

I choose resolved as obsolete and posted a new bug under ALSA, as there was not a 'Resolved as don't care, post this somewhere else' option.
Comment 4 Paul Menzel 2017-05-04 07:19:41 UTC 
(In reply to bellamorte42 from comment #3)
> As posted above, "Drivers/Sound or Drivers/PCI are probably much more
> appropriate categories for this."
> 
> I choose resolved as obsolete and posted a new bug under ALSA, as there was
> not a 'Resolved as don't care, post this somewhere else' option.

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