Thread: Problems with USB 3.0 and Blu-Ray Wirter (LG BE14NU40)

i have bought lg be14nu40 (external usb 3 blu-ray disk writer @ 14x),
work fine under windows,
if try use under linux writes kind of disk very slowly.
blu ray disks usb 3 should go @ 14x if use under linux/ubuntu
on same machine in witch works under windows, transfer speed kind of cd/dvd/bd write
seems limited around 1200-1500kib/sec mean bd-r 0,3x!
(i think speed near usb 1.1 conection)!

why works bad under ubuntu? works faster on windows usb 2 !!

it's problem usb 3 driver?

think not recognized in coorect way beacuse lsusb says :


bus 004 device 003: id 067b:2771 prolific technology, inc.




bus 004 device 003: id 067b:2771 prolific technology, inc.
couldn't open device, information missing
device descriptor:
blength 18
bdescriptortype 1
bcdusb 3.00
bdeviceclass 0 (defined @ interface level)
bdevicesubclass 0
bdeviceprotocol 0
bmaxpacketsize0 9
idvendor 0x067b prolific technology, inc.
idproduct 0x2771
bcddevice 1.00
imanufacturer 1
iproduct 2
iserial 3
bnumconfigurations 1
configuration descriptor:
blength 9
bdescriptortype 2
wtotallength 44
bnuminterfaces 1
bconfigurationvalue 1
iconfiguration 0
bmattributes 0xc0
self powered
maxpower 24ma
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 0x84 ep 4 in
bmattributes 2
transfer type bulk
synch type none
usage type data
wmaxpacketsize 0x0400 1x 1024 bytes
binterval 0
bmaxburst 15
endpoint descriptor:
blength 7
bdescriptortype 5
bendpointaddress 0x01 ep 1 out
bmattributes 2
transfer type bulk
synch type none
usage type data
wmaxpacketsize 0x0400 1x 1024 bytes
binterval 0
bmaxburst 15



anyone!

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Hardware [ubuntu] Problems with USB 3.0 and Blu-Ray Wirter (LG BE14NU40)

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