Public bug reported:
When I plug in card reader to usb (Axago All in One) it gets mount correctly:
[ 128.428096] usb 1-1: new high speed USB device number 3 using ehci_hcd
[ 128.865310] usbcore: registered new interface driver uas
[ 128.901486] Initializing USB Mass Storage driver...
[ 128.901586] usbcore: registered new interface driver usb-storage
[ 128.901589] USB Mass Storage support registered.
[ 128.903679] scsi6 : usb-storage 1-1:1.0
[ 128.903822] usbcore: registered new interface driver ums-realtek
[ 129.910817] scsi 6:0:0:0: Direct-Access Generic- Multi-Card 1.00
PQ: 0 ANSI: 0 CCS
[ 129.932866] sd 6:0:0:0: Attached scsi generic sg2 type 0
[ 130.456296] sd 6:0:0:0: [sdb] 3842048 512-byte logical blocks: (1.96 GB/1.83
GiB)
[ 130.457158] sd 6:0:0:0: [sdb] Write Protect is off
[ 130.457165] sd 6:0:0:0: [sdb] Mode Sense: 03 00 00 00
[ 130.458032] sd 6:0:0:0: [sdb] No Caching mode page present
[ 130.458039] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 130.461649] sd 6:0:0:0: [sdb] No Caching mode page present
[ 130.461657] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 130.462894] sdb: sdb1
[ 130.465644] sd 6:0:0:0: [sdb] No Caching mode page present
[ 130.465652] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 130.465659] sd 6:0:0:0: [sdb] Attached SCSI removable disk
But after while (sometimes less than minute, sometimes longer):
[ 189.668175] usb 1-1: USB disconnect, device number 3
[ 190.120268] usb 2-1: new full speed USB device number 2 using uhci_hcd
[ 190.244054] usb 2-1: device descriptor read/64, error -71
[ 190.468087] usb 2-1: device descriptor read/64, error -71
[ 190.628138] hub 2-0:1.0: unable to enumerate USB device on port 1
device is disconnected and detected as full speed USB using uhci_hcd
(previously detected as high speed USB using ehci_hcd).
And then it is unable to enumerate. No /dev/sdb1 device is then accessible.
It's annoying especially if you want quickly move photos from card and go away
for another shots.
Please explain where the bug is or release fix.
Thanks
cat /proc/version:
Linux version 3.0.0-15-generic (buildd@zirconium) (gcc version 4.6.1
(Ubuntu/Linaro 4.6.1-9ubuntu3) ) #26-Ubuntu SMP Fri Jan 20 15:59:53 UTC 2012
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/923375
Title:
USB disconnect after while (ehci_hcd, uhci_hcd)
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