I'll test this out tonight, thanks!
On Thu, Aug 1, 2013 at 2:58 PM, Alan Stern <email address hidden> 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 underrun occurs, but it prevents > the underrun from causing a failure. > > It turns out there are two bugs in the snd-usb-audio driver, either of > which may be affecting you. There's a patch for one of the bugs at > <http://marc.info/?l=linux-usb&m=137288343602140&w=2>, but there's no > fix for the other bug (not enough URBs submitted). > > ** Attachment added: "Accept URB submissions during underruns, with a warning" > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1191603/+attachment/3757297/+files/ehci-iso-accept > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1191603 > > Title: > raring-updates: regression: 3.8.0-24.35 causes sporadic failure of USB > audio devices > > Status in “linux” package in Ubuntu: > Triaged > > Bug description: > The 3.8.0-24.35 kernel update in raring introduced sporadic failure of > USB audio devices. The symptoms are that the device suddenly stops > working and you get the following dmesg output: > > [ 7532.838274] cannot submit urb (err = -18) > [ 7532.838283] cannot submit urb (err = -18) > [ 7532.838291] cannot submit urb (err = -18) > [ 7532.842224] delay: estimated 288, actual 96 > [ 7532.922160] delay: estimated 432, actual 96 > > This bug has been introduced by the following commits (UHCI: implement new semantics for URB_ISO_ASAP, OHCI: implement new semantics for URB_ISO_ASAP): > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c44b225077bb1fb25ed5cd5c4f226897b91bedd4 > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6a41b4d3fe8cd4cc95181516fc6fba7b1747a27c > > A fix has been released (USB: fix latency in uhci-hcd and ohci-hcd): > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e1944017839d7dfbf7329fac4bdec8b4050edf5e > > The fix hasn't been backported to 3.8 yet, but as this bug was > introduced to raring by pulling upstream kernel changes, it would be > nice to backport the fix to raring as soon as possible. > > For further reference: > http://markmail.org/message/gt554vejrjkutsfw#query:+page:1+mid:gt554vejrjkutsfw+state:results > https://bbs.archlinux.org/viewtopic.php?id=163891 > http://comments.gmane.org/gmane.linux.usb.general/85343 > http://lists.opensuse.org/opensuse-bugs/2013-05/msg01617.html > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1191603/+subscriptions
-- All programmers are playwrights, and all computers are lousy actors.
#define sizeof(x) rand() :wq
I'll test this out tonight, thanks!
On Thu, Aug 1, 2013 at 2:58 PM, Alan Stern <email address hidden> wrote: marc.info/ ?l=linux- usb&m=137288343 602140& w=2>, but there's no /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1191603/ +attachment/ 3757297/ +files/ ehci-iso- accept /bugs.launchpad .net/bugs/ 1191603 /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=c44b225077b b1fb25ed5cd5c4f 226897b91bedd4 /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=6a41b4d3fe8 cd4cc95181516fc 6fba7b1747a27c /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=e1944017839 d7dfbf7329fac4b dec8b4050edf5e markmail. org/message/ gt554vejrjkutsf w#query: +page:1+ mid:gt554vejrjk utsfw+state: results /bbs.archlinux. org/viewtopic. php?id= 163891 comments. gmane.org/ gmane.linux. usb.general/ 85343 lists.opensuse. org/opensuse- bugs/2013- 05/msg01617. html /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1191603/ +subscriptions
> 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 snd-usb-audio driver, either of
> which may be affecting you. There's a patch for one of the bugs at
> <http://
> fix for the other bug (not enough URBs submitted).
>
> ** Attachment added: "Accept URB submissions during underruns, with a warning"
> https:/
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https:/
>
> Title:
> raring-updates: regression: 3.8.0-24.35 causes sporadic failure of USB
> audio devices
>
> Status in “linux” package in Ubuntu:
> Triaged
>
> Bug description:
> The 3.8.0-24.35 kernel update in raring introduced sporadic failure of
> USB audio devices. The symptoms are that the device suddenly stops
> working and you get the following dmesg output:
>
> [ 7532.838274] cannot submit urb (err = -18)
> [ 7532.838283] cannot submit urb (err = -18)
> [ 7532.838291] cannot submit urb (err = -18)
> [ 7532.842224] delay: estimated 288, actual 96
> [ 7532.922160] delay: estimated 432, actual 96
>
> This bug has been introduced by the following commits (UHCI: implement new semantics for URB_ISO_ASAP, OHCI: implement new semantics for URB_ISO_ASAP):
> https:/
> https:/
>
> A fix has been released (USB: fix latency in uhci-hcd and ohci-hcd):
> https:/
>
> The fix hasn't been backported to 3.8 yet, but as this bug was
> introduced to raring by pulling upstream kernel changes, it would be
> nice to backport the fix to raring as soon as possible.
>
> For further reference:
> http://
> https:/
> http://
> http://
>
> To manage notifications about this bug go to:
> https:/
--
All programmers are playwrights, and all computers are lousy actors.
#define sizeof(x) rand()
:wq