On Thu, 17 Dec 2015, Christian wrote: > Hi, > > I have a problem with sdhc and sd-cards. I cannot access the cards because > I always get I/O errors according to dmesg. > > I tried 2 types of card readers and 3 types of sdhc cards. I also tried the > sdhc cards with sd-card adapters. > > Interesting is, that i both cases, sdhc card directly and with a sdcard > adapter, there is no accessibility. But, dmesg output with the I/O error > only comes with sdhc directly. > > I also tried some usb-storage quirks. Nothing worked. > > Approximately a year ago, as I can recall with kernel 3.*, the cards worked > proper. > > I cannot access the cards with dd and so on. I only register, that I can > open den device with gdisk, a least it looks this way. You can even > recognice the size of the card. More Output below. > ###Dmesg after inserting the sdhc card > > [ 37.700261] usb 3-2: USB disconnect, device number 2 > [ 37.961023] usb 3-2: new high-speed USB device number 4 using ehci-pci > [ 38.097427] usb-storage 3-2:1.0: USB Mass Storage device detected > [ 38.098596] scsi host7: usb-storage 3-2:1.0 > [ 39.099025] scsi 7:0:0:0: Direct-Access Generic STORAGE DEVICE > 0902 PQ: 0 ANSI: 6 > [ 39.331856] sd 7:0:0:0: [sdc] 15564800 512-byte logical blocks: (7.96 > GB/7.42 GiB) > [ 39.333349] sd 7:0:0:0: [sdc] Write Protect is off > [ 39.333363] sd 7:0:0:0: [sdc] Mode Sense: 21 00 00 00 > [ 39.334991] sd 7:0:0:0: [sdc] Write cache: disabled, read cache: > enabled, doesn't support DPO or FUA > [ 41.094909] sd 7:0:0:0: [sdc] UNKNOWN(0x2003) Result: hostbyte=0x00 > driverbyte=0x08 > [ 41.094923] sd 7:0:0:0: [sdc] Sense Key : 0xb [current] > [ 41.094931] sd 7:0:0:0: [sdc] ASC=0x47 ASCQ=0x1 > [ 41.094939] sd 7:0:0:0: [sdc] CDB: opcode=0x28 28 00 00 00 00 00 00 00 > 08 00 > [ 41.094946] blk_update_request: I/O error, dev sdc, sector 0 > [ 41.094955] Buffer I/O error on dev sdc, logical block 0, async page read Please post a usbmon trace showing what happens when you plug in one of the card readers with a card in it (see Documentation/usb/usbmon.txt for instructions). 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
