[CentOS] usb irq problem
partha chowdhury
kira.laucas at gmail.com
Wed Sep 24 15:15:24 UTC 2008
On Wed, 2008-09-24 at 07:09 -0700, nate wrote:
>
> I wouldn't think the system is about to fail if it's just going
> slower. If there are specific error messages that point to it's
> failing then maybe. Errors quoted earlier just seem like bad
> hardware(perhaps poorly designed or built, rather than hardware
> that is physically failing).
well i myself have assembled this box. did i do something wrong because
it is running fine for last 10 months without any hiccups and other than
this minor issue no problem at all.
>
> Only thing I can suggest is to just verify that the drive is
> detected as USB 2.0 via lsusb -v
>
> e.g.
> Bus 004 Device 020: ID 1058:0702 Western Digital Technologies, Inc.
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> [..]
> iManufacturer 1 Western Digital
> iProduct 2 External HDD
>
> I believe the 2.00 indicates USB 2.0, I see several other
> devices on my USB that are marked as 1.x
here is my output
Bus 002 Device 002: ID 05e3:0702 Genesys Logic, Inc. USB 2.0 IDE Adapter
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x05e3 Genesys Logic, Inc.
idProduct 0x0702 USB 2.0 IDE Adapter
bcdDevice 0.33
iManufacturer 0
iProduct 1 USB TO IDE
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 96mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk (Zip)
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
you can see it is detected as usb2.0.
> If you configured your system's kernel to ignore the irq errors
> as the other poster did(I think your a different poster..didn't
> check), you really should remove that option and enable the
> checking again, and try a PCI USB expansion card instead and
> see if that helps.
actually it was i who sent it. i sent it through gmail so it did not
insert my name just my email id. usually i send through evolution. i did
not know this issue. apology for the unintentional mixups.
i want to know one thing - the hardware failing logic you earlier spoke
of - is that disabled or removed in latest 2.6.26.5 kernel because i
experimented with custom compiling that kernel and did not receive any
error message whatsoever.
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