Hi, This is with 2.6.31.1. I'm having a lot of problems with a lacie external hd[1]. It seems the actual disk is a seagate ST375064, and the bridge is a JMicron 2339. In normal usage what I see is that if I don't use the disk after a while hear a loud click (as if something got stuck) and then I cannot use it any more; I have to turn it off and on again. But then I started to see some problems on one fs, so I ran badblocks and I noticed a lot of strange behavior. It seems once I get a read/write error then I get more of them in a row, and after a while I hear another loud click, and then I only get read/write errors constantly. I noticed in 'unusual_devs.h' there's already a quirk for another JMicron product, so I tried to do the same: +UNUSUAL_DEV( 0x152d, 0x2339, 0x0000, 0xffff, + "JMicron", + "USB to ATA/ATAPI Bridge", + US_SC_DEVICE, US_PR_DEVICE, NULL, + US_FL_IGNORE_RESIDUE | US_FL_SANE_SENSE ), This seemed to help with the consecutive errors, but not with the loud click. This is what I get when this click happens: Oct 3 13:14:54 annwn kernel: [ 351.099096] usb 1-1: reset high speed USB device using ehci_hcd and address 3 Oct 3 13:14:54 annwn kernel: [ 351.213541] usb 1-1: device firmware changed Oct 3 13:14:54 annwn kernel: [ 351.213588] usb 1-1: USB disconnect, address 3 Oct 3 13:14:54 annwn kernel: [ 351.213633] sd 4:0:0:0: Device offlined - not ready after error recovery Oct 3 13:14:54 annwn kernel: [ 351.213650] sd 4:0:0:0: [sdb] Unhandled error code Oct 3 13:14:54 annwn kernel: [ 351.213655] sd 4:0:0:0: [sdb] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK Oct 3 13:14:54 annwn kernel: [ 351.213663] end_request: I/O error, dev sdb, sector 8596352 Oct 3 13:14:54 annwn kernel: [ 351.213774] sd 4:0:0:0: rejecting I/O to offline device Oct 3 13:14:54 annwn kernel: [ 351.213816] sd 4:0:0:0: rejecting I/O to offline device Oct 3 13:14:54 annwn kernel: [ 351.213852] sd 4:0:0:0: rejecting I/O to offline device Oct 3 13:14:54 annwn kernel: [ 351.213891] sd 4:0:0:0: rejecting I/O to offline device Oct 3 13:14:54 annwn kernel: [ 351.213927] sd 4:0:0:0: rejecting I/O to offline device Oct 3 13:14:54 annwn kernel: [ 351.213962] sd 4:0:0:0: rejecting I/O to offline device Oct 3 13:14:54 annwn kernel: [ 351.213997] sd 4:0:0:0: rejecting I/O to offline device Oct 3 13:14:54 annwn kernel: [ 351.214202] sd 4:0:0:0: rejecting I/O to offline device Oct 3 13:14:55 annwn kernel: [ 351.317278] usb 1-1: new high speed USB device using ehci_hcd and address 4 Oct 3 13:14:55 annwn kernel: [ 351.432192] usb 1-1: New USB device found, idVendor=152d, idProduct=2339 Oct 3 13:14:55 annwn kernel: [ 351.432196] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=5 Oct 3 13:14:55 annwn kernel: [ 351.432199] usb 1-1: Product: USB to ATA/ATAPI Bridge Oct 3 13:14:55 annwn kernel: [ 351.432202] usb 1-1: Manufacturer: JMicron Oct 3 13:14:55 annwn kernel: [ 351.432204] usb 1-1: SerialNumber: 5D27FFFFFFFF Oct 3 13:14:55 annwn kernel: [ 351.432321] usb 1-1: configuration #1 chosen from 1 choice Oct 3 13:14:55 annwn kernel: [ 351.432791] scsi5 : SCSI emulation for USB Mass Storage devices Can anyone help? This disk is important for me =/ Cheers. T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 62 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=152d ProdID=2339 Rev= 1.00 S: Manufacturer=JMicron S: Product=USB to ATA/ATAPI Bridge S: SerialNumber=152D203380B6 C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 2mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms [1] http://www.lacie.com/us/products/product.htm?pid=11016 -- Felipe Contreras -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html