Здравствуйте,
Дистрибутив Debian Buster. Есть флешка, которая поддерживает usb 2.0. Linux, почему-то, использует для нее uhci_hcd вместо ehci_hcd. В результате скорость записи около 1MB/s.
lsusb
Bus 002 Device 003: ID 8564:1000 Transcend Information, Inc. JetFlash
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x8564 Transcend Information, Inc.
idProduct 0x1000 JetFlash
bcdDevice 1.00
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0020
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 200mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
dmesg
[ 2399.504075] usb 2-2: new full-speed USB device number 3 using uhci_hcd
[ 2399.696652] usb 2-2: New USB device found, idVendor=8564, idProduct=1000, bcdDevice= 1.00
[ 2399.696658] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2399.696661] usb 2-2: Product: Mass Storage Device
[ 2399.696664] usb 2-2: Manufacturer: JetFlash
[ 2399.696666] usb 2-2: SerialNumber: 7FO8GZI2
[ 2399.701363] usb-storage 2-2:1.0: USB Mass Storage device detected
[ 2399.732717] scsi host6: usb-storage 2-2:1.0
[ 2400.765070] scsi 6:0:0:0: Direct-Access JetFlash Transcend 16GB 8.07 PQ: 0 ANSI: 4
[ 2400.770067] sd 6:0:0:0: Attached scsi generic sg2 type 0
[ 2400.779767] sd 6:0:0:0: [sdb] 29861888 512-byte logical blocks: (15.3 GB/14.2 GiB)
[ 2400.783038] sd 6:0:0:0: [sdb] Write Protect is off
[ 2400.783044] sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00
[ 2400.785680] sd 6:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 2400.813902] sdb: sdb1
[ 2400.830701] sd 6:0:0:0: [sdb] Attached SCSI removable disk
[ 3629.296109] usb 2-2: USB disconnect, device number 3
[ 3634.244265] usb 2-2: new full-speed USB device number 4 using uhci_hcd
[ 3634.438257] usb 2-2: New USB device found, idVendor=8564, idProduct=1000, bcdDevice= 1.00
[ 3634.438263] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3634.438266] usb 2-2: Product: Mass Storage Device
[ 3634.438269] usb 2-2: Manufacturer: JetFlash
[ 3634.438271] usb 2-2: SerialNumber: 7FO8GZI2
[ 3634.442150] usb-storage 2-2:1.0: USB Mass Storage device detected
[ 3634.451257] scsi host6: usb-storage 2-2:1.0
[ 3635.465296] scsi 6:0:0:0: Direct-Access JetFlash Transcend 16GB 8.07 PQ: 0 ANSI: 4
[ 3635.471417] sd 6:0:0:0: Attached scsi generic sg2 type 0
[ 3635.482350] sd 6:0:0:0: [sdb] 29861888 512-byte logical blocks: (15.3 GB/14.2 GiB)
[ 3635.485455] sd 6:0:0:0: [sdb] Write Protect is off
[ 3635.485462] sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00
[ 3635.488435] sd 6:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 3635.513418] sdb: sdb1
[ 3635.528348] sd 6:0:0:0: [sdb] Attached SCSI removable disk
dmesg |grep -i ehci
[ 3.995756] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
Подскажите решение, заранее благодарен
