[Bug 622168] Re: webcam "device initialization failed" in lucid (needs high-speed USB 2.0 port) but has worked in past on lucid

[Kim Tyler]

After being up for a while with the webcam working, a lost interrupt has
caused the webcam to re-initialize and fail.

from /var/log/messages :-
Sep 15 09:25:56 pio kernel: [  203.107480] xc2028 1-0061: Loading firmware for type=(0), id 0000000100000007.
Sep 15 09:25:57 pio kernel: [  203.520033] xc2028 1-0061: Loading SCODE for type=MONO SCODE HAS_IF_5320 (60008000), id 0000000f00000007.
Sep 15 09:28:00 pio kernel: [  326.840054] xc2028 1-0061: Loading firmware for type=BASE F8MHZ (3), id 0000000000000000.
Sep 15 09:28:20 pio kernel: [  347.070039] xc2028 1-0061: Loading firmware for type=D2633 DTV7 (90), id 0000000000000000.
Sep 15 09:28:21 pio kernel: [  347.470025] xc2028 1-0061: Loading SCODE for type=SCODE HAS_IF_5260 (60000000), id 0000000000000000.
Sep 15 09:36:26 pio kernel: [  833.040095] ata2: lost interrupt (Status 0x51)
Sep 15 09:36:31 pio kernel: [  838.040099] ata2.01: qc timeout (cmd 0xa0)
Sep 15 09:36:31 pio kernel: [  838.040128] sr 1:0:1:0: CDB: Test Unit Ready: 00 00 00 00 00 00
Sep 15 09:36:31 pio kernel: [  838.040192] ata2: soft resetting link
Sep 15 09:36:32 pio kernel: [  838.280459] ata2.00: configured for UDMA/33
Sep 15 09:36:32 pio kernel: [  838.320451] ata2.01: configured for UDMA/33
Sep 15 09:36:37 pio kernel: [  843.320052] ata2.00: qc timeout (cmd 0xa0)
Sep 15 09:36:37 pio kernel: [  843.320065] ata2.00: TEST_UNIT_READY failed (err_mask=0x5)
Sep 15 09:36:37 pio kernel: [  843.320100] ata2: soft resetting link
Sep 15 09:36:37 pio kernel: [  843.560375] ata2.00: configured for UDMA/33
Sep 15 09:36:37 pio kernel: [  843.600440] ata2.01: configured for UDMA/33
Sep 15 09:36:42 pio kernel: [  848.600052] ata2.00: qc timeout (cmd 0xa0)
Sep 15 09:36:42 pio kernel: [  848.600065] ata2.00: TEST_UNIT_READY failed (err_mask=0x5)
Sep 15 09:36:42 pio kernel: [  848.600074] ata2.00: limiting speed to UDMA/33:PIO3
Sep 15 09:36:42 pio kernel: [  848.600107] ata2: soft resetting link
Sep 15 09:36:42 pio kernel: [  848.840358] ata2.00: configured for UDMA/33
Sep 15 09:36:42 pio kernel: [  848.880471] ata2.01: configured for UDMA/33
Sep 15 09:36:47 pio kernel: [  853.880066] ata2.00: qc timeout (cmd 0xa0)
Sep 15 09:36:47 pio kernel: [  853.880079] ata2.00: TEST_UNIT_READY failed (err_mask=0x5)
Sep 15 09:36:47 pio kernel: [  853.880085] ata2.00: disabled
Sep 15 09:36:47 pio kernel: [  853.880107] ata2.01: TEST_UNIT_READY failed (err_mask=0x40)
Sep 15 09:36:47 pio kernel: [  853.880135] ata2: soft resetting link
Sep 15 09:36:47 pio kernel: [  854.100461] ata2.01: configured for UDMA/33
Sep 15 09:36:52 pio kernel: [  859.100057] ata2.01: qc timeout (cmd 0xa0)
Sep 15 09:36:52 pio kernel: [  859.100070] ata2.01: TEST_UNIT_READY failed (err_mask=0x5)
Sep 15 09:36:52 pio kernel: [  859.100079] ata2.01: limiting speed to UDMA/33:PIO3
Sep 15 09:36:52 pio kernel: [  859.100112] ata2: soft resetting link
Sep 15 09:36:53 pio kernel: [  859.320458] ata2.01: configured for UDMA/33
Sep 15 09:36:58 pio kernel: [  864.320051] ata2.01: qc timeout (cmd 0xa0)
Sep 15 09:36:58 pio kernel: [  864.320064] ata2.01: TEST_UNIT_READY failed (err_mask=0x5)
Sep 15 09:36:58 pio kernel: [  864.320070] ata2.01: disabled
Sep 15 09:36:58 pio kernel: [  864.320128] ata2: soft resetting link
Sep 15 09:36:58 pio kernel: [  864.481661] ata2: EH complete
Sep 15 11:47:01 pio kernel: [ 8667.672962] usb 1-2: USB disconnect, address 2
Sep 15 11:47:01 pio kernel: [ 8667.673177] em28xx #0: disconnecting em28xx #0 video
Sep 15 11:47:01 pio kernel: [ 8667.673185] em28xx #0: V4L2 device /dev/video0 deregistered
Sep 15 11:47:01 pio kernel: [ 8667.990159] usb 1-2: new high speed USB device using ehci_hcd and address 5
Sep 15 11:47:02 pio kernel: [ 8668.360050] usb 2-2: new full speed USB device using uhci_hcd and address 2
Sep 15 11:47:02 pio kernel: [ 8668.508050] usb 2-2: not running at top speed; connect to a high speed hub
Sep 15 11:47:02 pio kernel: [ 8668.519294] usb 2-2: configuration #1 chosen from 1 choice
Sep 15 11:47:02 pio kernel: [ 8668.522198] em28xx: New device @ 12 Mbps (eb1a:2750, interface 0, class 0)
Sep 15 11:47:02 pio kernel: [ 8668.522204] em28xx: Device initialization failed.
Sep 15 11:47:02 pio kernel: [ 8668.522208] em28xx: Device must be connected to a high-speed USB 2.0 port.

-- 
webcam "device initialization failed" in lucid (needs high-speed USB 2.0 port) but has worked in past on lucid
https://bugs.launchpad.net/bugs/622168
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