Public bug reported:
Under Feisty, plugging in a USB high speed flash device (or just about
anything else that uses USB high speed) results in the following
messages showing up in the log (and a failure to connect the device):
Mar 29 09:28:43 hackworth kernel: [156070.920000] usb 4-4: new high speed USB
device using ehci_hcd and address 5
Mar 29 09:28:47 hackworth kernel: [156075.204000] usb 4-4: new high speed USB
device using ehci_hcd and address 19
Mar 29 09:28:49 hackworth kernel: [156077.220000] usb 4-4: new high speed USB
device using ehci_hcd and address 26
Mar 29 09:28:51 hackworth kernel: [156079.236000] usb 4-4: new high speed USB
device using ehci_hcd and address 31
Mar 29 09:28:52 hackworth kernel: [156080.244000] usb 4-4: new high speed USB
device using ehci_hcd and address 34
Mar 29 09:29:02 hackworth kernel: [156090.072000] usb 4-4: new high speed USB
device using ehci_hcd and address 72
Mar 29 09:29:03 hackworth kernel: [156091.080000] usb 4-4: new high speed USB
device using ehci_hcd and address 75
Mar 29 09:29:05 hackworth kernel: [156093.096000] usb 4-4: new high speed USB
device using ehci_hcd and address 82
The messages repeat over and over and the device never mounts.
If I do a "rmmod ehci_hcd",
Mar 29 09:30:15 hackworth kernel: [156162.472000] ehci_hcd 0000:00:1d.7: USB
bus 4 deregistered
Mar 29 09:30:15 hackworth kernel: [156162.472000] ACPI: PCI interrupt for
device 0000:00:1d.7 disabled
the device will then be recognized and mount normally:
Mar 29 09:31:20 hackworth kernel: [156227.792000] usb 2-2: new full speed USB
device using uhci_hcd and address 2
Mar 29 09:31:20 hackworth kernel: [156227.960000] usb 2-2: configuration #1
chosen from 1 choice
Mar 29 09:31:20 hackworth kernel: [156228.100000] usbcore: registered new
interface driver libusual
Mar 29 09:31:20 hackworth kernel: [156228.112000] Initializing USB Mass Storage
driver...
Mar 29 09:31:20 hackworth kernel: [156228.112000] scsi2 : SCSI emulation for
USB Mass Storage devices
Mar 29 09:31:20 hackworth kernel: [156228.112000] usbcore: registered new
interface driver usb-storage
Mar 29 09:31:20 hackworth kernel: [156228.112000] USB Mass Storage support
registered.
Mar 29 09:31:20 hackworth kernel: [156228.112000] usb-storage: device found at 2
Mar 29 09:31:20 hackworth kernel: [156228.112000] usb-storage: waiting for
device to settle before scanning
Mar 29 09:31:25 hackworth kernel: [156233.112000] usb-storage: device scan
complete
Mar 29 09:31:25 hackworth kernel: [156233.116000] scsi 2:0:0:0: Direct-Access
Generic STORAGE DEVICE 0026 PQ: 0 ANSI: 0
Mar 29 09:31:25 hackworth kernel: [156233.120000] SCSI device sdb: 512000
512-byte hdwr sectors (262 MB)
Mar 29 09:31:25 hackworth kernel: [156233.124000] sdb: Write Protect is off
Mar 29 09:31:25 hackworth kernel: [156233.124000] sdb: Mode Sense: 02 00 00 00
Mar 29 09:31:25 hackworth kernel: [156233.124000] sdb: assuming drive cache:
write through
Mar 29 09:31:25 hackworth kernel: [156233.136000] SCSI device sdb: 512000
512-byte hdwr sectors (262 MB)
Mar 29 09:31:25 hackworth kernel: [156233.144000] sdb: Write Protect is off
Mar 29 09:31:25 hackworth kernel: [156233.144000] sdb: Mode Sense: 02 00 00 00
Mar 29 09:31:25 hackworth kernel: [156233.144000] sdb: assuming drive cache:
write through
Mar 29 09:31:25 hackworth kernel: [156233.144000] sdb: sdb1
Mar 29 09:31:25 hackworth kernel: [156233.148000] sd 2:0:0:0: Attached scsi
removable disk sdb
Mar 29 09:31:25 hackworth kernel: [156233.148000] sd 2:0:0:0: Attached scsi
generic sg2 type 0
Clearly this is some sort of bug or deficiency in the ehci_hcd module.
The ehci device works just fine under other operating systems including
Windows and NetBSD.
** Affects: Ubuntu
Importance: Undecided
Status: Unconfirmed
--
USB problems on IBM T41 laptop
https://launchpad.net/bugs/98608
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