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Message #09849
[Bug 1212430] Re: usbaudio: unit X: unexpected type X - parse_audio_unit() fails
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed'
to 'verification-done'.
If verification is not done by one week from today, this fix will be
dropped from the source code, and this bug will be closed.
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!
** Tags added: verification-needed-quantal
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https://bugs.launchpad.net/bugs/1212430
Title:
usbaudio: unit X: unexpected type X - parse_audio_unit() fails
Status in “linux” package in Ubuntu:
Fix Released
Status in “linux” source package in Precise:
In Progress
Status in “linux” source package in Quantal:
In Progress
Status in “linux” source package in Raring:
Fix Released
Bug description:
SRU Justification:
Impact: Users of the 3.2/3.5 kernel may not be able to use their usbaudio devices.
Fix: commit 61ac51301e6c6d4ed977d7674ce2b8e713619a9b upstream. This is already applied in 3.8.
Testcase: Build with the fix, attach affected usbaudio devices. See if those devices work after the patch.
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For some usbaudio devices, an unexpected type can cause parse_audio_unit() to fail.
This results in a message like the following:
[544717.685926] usb 1-1.5: new high-speed USB device number 14 using ehci_hcd
[544717.779149] usb 1-1.5: New USB device found, idVendor=1235, idProduct=8014
[544717.779154] usb 1-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[544717.779157] usb 1-1.5: Product: Scarlett 18i8 USB
[544717.779160] usb 1-1.5: Manufacturer: Focusrite
[544717.779162] usb 1-1.5: SerialNumber: 00009F2B
[544717.833068] usbaudio: unit 51: unexpected type 0x09
[544717.833568] usbaudio: unit 52: unexpected type 0x09
The commit 61ac51301e6c6d4ed977d7674ce2b8e713619a9b, allows for this
type to also be handled, allowing the usbaudio device to operate.
This was fixed in v3.9-rc4 and beyond; therefore precise/quantal and
raring are affected. However it looks like the patch landed in stable
for 3.8.x.
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References