[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete = Expired
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** Tags added: kernel-da-key
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https://bugs.launchpad.net/bugs/1191603
Title:
raring-updates: regression: 3.8.0-24.35 causes sporadic failure of USB
audio devices
Status
Thanks for your kind response.
Yes, the printing level of my system was debug, I did not know about it.-);
And the point of my question is. When these debug messages were printed, Is
system possible to be slowed?
When my audio process was dead, these log were printed and the time of making
Printing the debug messages shouldn't slow down your system very much.
However, the audio driver could indeed slow down your system when a
delay occurs like this.
If you want to check whether printing the debug messages slows down your
system, all you have to do is change the system's printing
First, those are not warning messages; they are debugging messages.
Therefore they should not be stored in your system log or printed out.
Second, if you are using a USB webcam then the webcam can't send audio
data to the system if no processing is asking for it.
Third, the messages indicate
Hi,
I got a side-effect because of this patch. My webcam use EHCI not OHCI or UHCI,
And I'm using linux-3.8.xx. After patching this issue, the failure of urb
submit problem was gone. But I got a side-effect. Too many warning messages
makes my system to be hang.
A lot of kernel warning messages
Please be more specific. Which patch causes the side effect?
Also, please attach a portion of your system log showing the warning
messages.
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I applied below patch in my linux-3.8.13.
https://lkml.org/lkml/2013/8/18/203
[ 35/45] USB: EHCI: accept very late isochronous URBs
After then, I got a lot of warning messages like as below.
[ 133.760978] ehci 100f.ehci: iso underrun e07c1840 (3375+0 5472)
[ 133.760999] ehci 100f.ehci:
It's looking good so far, I couldn't reproduce the issue with Alan's
OHCI-patch (#75) applied.
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Title:
raring-updates: regression:
The following commit is now in Raring:
07b7319 - USB: EHCI: accept very late isochronous URBs
I'll move this bug to Incomplete for now. Steve Markgraf, can you
confirm this bug is resolved by testing with the latest updates? If it
is, please change the status to Fix Released.
** Changed in:
As this issue was very annoying, I bought a headset-adapter and switched
away from using a USB audio device to using the built-in audio adapter
of my Thinkpad X121e, so this issue was off my radar. Sorry for the lack
of feedback. I've just given the latest kernel a test and it still
happens, which
Tested kernel 3.10.13 with EHCI sound adapter, commit
c72a0e036f9d80c609e608a723751343f1f5e9fc included. Works perfectly.
Thank you all!
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I've been following this, since I was affected using Arch Linux too. It
seems a commit has been included in 3.10.8 for the workaround of
accepting late URBs submissions:
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.8
commit c72a0e036f9d80c609e608a723751343f1f5e9fc
USB: EHCI:
Steve: Since you're using an OHCI controller, the fixes for EHCI won't
help you. Please try the attached patch and let me know how it works.
If you can run the irqsoff tracer too, that would be great.
** Attachment added: Accept URB submissions in OHCI during underruns, with a
debugging message
Results for post #17 from Joseph and #72 from Alan for Lexicon Omega:
http://kernel.ubuntu.com/~jsalisbury/lp1191603/reverted/
ok for 10 hours, test aborted
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-rc1-raring/
ok for 3.5 hours, test aborted
I have applied Alan's patch to the 3.8.0-27-generic version of the
kernel. It appears to alleviate the problem so far. I am able to use the
microphone on my webcam for more than a few seconds. This is what
appears in dmesg and the kernel log, but the mic still works:
[ 460.62]
Will the people who are experiencing trouble with audio devices attached
to EHCI controllers please try the attached patch? It won't fix the
underlying problems (underruns in the data stream) but it will prevent
them from causing fatal errors.
I can provide a similar patch for OHCI controllers,
This bug also affects the Lexicon Omega USB audio interface on Precise
with linux-generic-lts-raring 3.8.0.27.27. This happens during ordinary
mp3 playback with pulseaudio/alsa.
kernel: [ 1139.189653] usb 1-1.3.3.1: new full-speed USB device number 16 using
ehci-pci
kernel: [ 1139.332530] usb
### I seem to be affected by this bug with the current raring kernel:
david@skyhawk:~$ uname -r
3.8.0-27-generic
Aug 4 21:24:32 skyhawk kernel: [21591.992070] usb 1-6: new high-speed USB
device number 15 using ehci-pci
Aug 4 21:24:33 skyhawk kernel: [21592.220296] usb 1-6: New USB device
This bug hit me real hard, and *is* present up to Debian's
3.10~rc7-1~exp1
Note: This *INCLUDES* e1944017839d7dfbf7329fac4bdec8b4050edf5e as far as
I can tell.
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Paul, what kind of USB controller is your sound card attached to (UHCI,
OHCI, or EHCI)?
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https://bugs.launchpad.net/bugs/1191603
Title:
raring-updates: regression:
Alan, thanks for the quick response
I'm using either EHCI or XHCI (I *think* it's XHCI? It's plugged into my
Lenovo dock), I'm at work and can't figure out if usbtree will work with
modern kernels :))
Bus 001 Device 003: ID 17ef:100a Lenovo ThinkPad Mini Dock Plus Series 3
(is the dock)
Bus
If it's xHCI then there's nothing I can do. If it's EHCI then the
attached patch ought to help. For debugging purpose it writes a warning
message to the kernel log whenever an underrun occurs, but it prevents
the underrun from causing a failure.
It turns out there are two bugs in the
I'll test this out tonight, thanks!
On Thu, Aug 1, 2013 at 2:58 PM, Alan Stern 1191...@bugs.launchpad.net wrote:
If it's xHCI then there's nothing I can do. If it's EHCI then the
attached patch ought to help. For debugging purpose it writes a warning
message to the kernel log whenever an
I gave it a short try last week, but failed. After taking a look at the default
Ubuntu kernel configuration I found out why:
# CONFIG_IRQSOFF_TRACER is not set
Since I'm currently on vacation and don't have the hardware with me,
I'll give it a try next week with the irqsoff-tracer enabled.
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** Changed in: linux (Ubuntu)
Assignee: Joseph Salisbury (jsalisbury) = (unassigned)
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Title:
raring-updates: regression:
Reading #1103018, I realised my realtime bug with Scarlett 2i4 is
definitely not the same. The bug I reported is present in 3.7.0 (which
#1103018 is not) - but not on 3.6.11 so I will continue my reporting on
#1185563. Still not sure which commit lead to the bug on my device. -
Still, please
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