On Thu, 12 Jan 2012, Tomasz Chmielewski wrote: > On 01/12/2012 08:19 PM, Alan Stern wrote: > > >> Is there any way to get this to a usable state? I'm using Linux 3.2. > > > > Can you post a usbmon trace showing what happens when the reader is > > plugged in? > > Here it is, a link to usbmon output for a 32 GB SDHC; below, pasted matching dmesg output: > > http://www.virtall.com/files/temp/32-GB-SDHC-broken.log > > [256998.807004] usb 2-1.2: new full-speed USB device number 26 using ehci_hcd > [256998.902962] scsi33 : usb-storage 2-1.2:1.0 > [256998.918968] xhci_hcd 0000:03:00.0: PME# disabled > [256998.919005] xhci_hcd 0000:03:00.0: setting latency timer to 64 > [256999.903126] scsi 33:0:0:0: Direct-Access USB2.0 CARD-READER 1.01 PQ: 0 ANSI: 2 > [256999.904814] sd 33:0:0:0: Attached scsi generic sg1 type 0 > [256999.911725] sd 33:0:0:0: [sdb] Attached SCSI removable disk > [256999.930286] sd 33:0:0:0: [sdb] 4290410496 512-byte logical blocks: (2.19 TB/1.99 TiB) > [256999.931445] sd 33:0:0:0: [sdb] No Caching mode page present > [256999.931455] sd 33:0:0:0: [sdb] Assuming drive cache: write through > [256999.935162] sd 33:0:0:0: [sdb] No Caching mode page present > [256999.935169] sd 33:0:0:0: [sdb] Assuming drive cache: write through > [256999.940502] sdb: sdb1 > [257001.553979] xhci_hcd 0000:03:00.0: PME# enabled > [257030.601695] usb 2-1.2: reset full-speed USB device number 26 using ehci_hcd > [257061.680843] usb 2-1.2: reset full-speed USB device number 26 using ehci_hcd > [257092.632102] usb 2-1.2: reset full-speed USB device number 26 using ehci_hcd > > > > Here, the same action for a 2 GB SD card (working correctly), and a matching dmesg: > > http://www.virtall.com/files/temp/2GB-SD-working.log > > [256730.780984] usb 2-1.2: new full-speed USB device number 20 using ehci_hcd > [256730.875977] scsi27 : usb-storage 2-1.2:1.0 > [256730.892967] xhci_hcd 0000:03:00.0: PME# disabled > [256730.893004] xhci_hcd 0000:03:00.0: setting latency timer to 64 > [256731.873595] scsi 27:0:0:0: Direct-Access USB2.0 CARD-READER 1.01 PQ: 0 ANSI: 2 > [256731.877195] sd 27:0:0:0: Attached scsi generic sg1 type 0 > [256731.883371] sd 27:0:0:0: [sdb] Attached SCSI removable disk > [256731.903746] sd 27:0:0:0: [sdb] 3981312 512-byte logical blocks: (2.03 GB/1.89 GiB) > [256731.904950] sd 27:0:0:0: [sdb] No Caching mode page present > [256731.904961] sd 27:0:0:0: [sdb] Assuming drive cache: write through > [256731.909074] sd 27:0:0:0: [sdb] No Caching mode page present > [256731.909085] sd 27:0:0:0: [sdb] Assuming drive cache: write through > [256731.914959] sdb: sdb1 > [256732.908506] xhci_hcd 0000:03:00.0: PME# enabled Judging by the log, the reader isn't able to handle such a large card. It reported a total capacity of 0xffba7800 sectors, about 2 TB as shown in the dmesg log. The correct value should have been somewhere around 0x03b9aca0. Then when the computer took the reader at its word and asked for the contents of sector 0xffba7780, the reader flipped out, requiring a reset. Things went downhill from there. With the 2-GB card, the reported capacity was 0x003cc000, which is about right as shown in the dmesg log. Unfortunately there is no way to override a device capacity. It doesn't look like you'll be able to use this reader with that card. By the way, what happens if you try to repartition the 32-GB card using this reader under a different OS? Alan Stern -- 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
