usb 1-2: device descriptor read/64, error -71

> What is this ''external minidrive'' exactly?
a Toshiba 40.00 Gb HDD2171 MK40196GAX
~
I started Linux/knoppix with the cheatcode
~
acpi=off noacpi testcd init 2
~
I ran dmesg:
~
....
usb 1-1: new high speed USB device using ehci_hcd and address 2
usb 1-1: device descriptor read/64, error -71
usb 1-1: configuration #1 chosen from 1 choice
scsi0 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
scsi 0:0:0:0: Direct-Access Generic USB Disk 9.02 PQ: 0
ANSI: 2
SCSI device sda: 78140160 512-byte hdwr sectors (40008 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 00
sda: assuming drive cache: write through
SCSI device sda: 78140160 512-byte hdwr sectors (40008 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 00
sda: assuming drive cache: write through
sda: sda1 sda2 sda3 sda4 < sda5 >
sd 0:0:0:0: Attached scsi disk sda
usb-storage: device scan complete
~
then fdisk and got
~
Disk /dev/sda: 40.0 GB, 40007761920 bytes
256 heads, 63 sectors/track, 4845 cylinders
Units = cylinders of 16128 * 512 = 8257536 bytes

Device Boot Start End Blocks Id System
/dev/sda1 1 255 2056288+ 83 Linux
/dev/sda2 256 1024 6201216 83 Linux
/dev/sda3 1025 1892 6999552 c W95 FAT32
(LBA)
/dev/sda4 1893 4845 23812992 5 Extended
/dev/sda5 1893 4845 23812960+ 83 Linux
~
I am able to fdisk, mount and access this USB-based (it is also
powered through the USB cable) external minidrive without any problems
now, which makes me wonder how safe my perception is.
~
Is there any way I could test the drive by other means? Even in a low
level way to see what is really going on with it and try to tell apart
hardware from software problems and if they are software ones, of
which kind? Or do you think the drive si just fine (I will regularly
backup my data anyway )
~
lbrtchx
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71 

Notice I am still getting the pesky
~
"device descriptor read/64, error -71"
~
error message
~
lbrtchx
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71 

well, I think you are right. It might be most probably kernel related
~
I tried using knoppix 4.0.2 which uses kernel
~
2.6.12
~
and even though I still got "device descriptor read/64, error -71"
the full dump read
~
usb 4-1: new full speed USB device using uhci_hcd and address 2
usb 4-1: device descriptor read/64, error -71
scsi1 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
Vendor: Generic Model: USB Disk Rev: 9.02
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sdb: 78140160 512-byte hdwr sectors (40008 MB)
sdb: assuming drive cache: write through
SCSI device sdb: 78140160 512-byte hdwr sectors (40008 MB)
sdb: assuming drive cache: write through
sdb: sdb1 sdb2 sdb3 sdb4 < sdb5 >
Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0
usb-storage: device scan complete
~
and I was able to use the disk without any problems
~
However it might also be hardware/BIOS related. When I try knoppix
5.1.1 CD at work with:
~
acpi=off noacpi init 2
~
using my box at work, I am getting
~
usb 1-4: new high speed USB device using ehci_hcd and address 3
ehci_hcd 0000:00:1d.7: Unlink after no-IRQ? Controller is probably
using the wrong IRQ.
usb 1-4: device descriptor read/64, error -71
usb 1-4: device not accepting address 3, error -110
usb 1-4: new high speed USB device using ehci_hcd and address 4
usb 1-4: device not accepting address 4, error -110
usb 1-4: new high speed USB device using ehci_hcd and address 5
usb 1-4: device not accepting address 5, error -110
usb 1-4: new high speed USB device using ehci_hcd and address 6
usb 1-4: device not accepting address 6, error -110
~
usb 2-4: new high speed USB device using ehci_hcd and address 2
ehci_hcd 0000:0a:0a.2: Unlink after no-IRQ? Controller is probably
using the wrong IRQ.
usb 2-4: device descriptor read/64, error -71
usb 2-4: device not accepting address 2, error -110
usb 2-4: new high speed USB device using ehci_hcd and address 3
usb 2-4: device descriptor read/64, error -110
usb 2-4: device not accepting address 3, error -110
usb 2-4: new high speed USB device using ehci_hcd and address 4
usb 2-4: device not accepting address 4, error -110
usb 2-4: new high speed USB device using ehci_hcd and address 5
usb 2-4: device not accepting address 5, error -110
usb 1-5: new high speed USB device using ehci_hcd and address 7
usb 1-5: device descriptor read/64, error -71
usb 1-5: device not accepting address 7, error -110
usb 1-5: new high speed USB device using ehci_hcd and address 8
usb 1-5: device descriptor read/64, error -110
usb 1-5: device not accepting address 8, error -110
usb 1-5: new high speed USB device using ehci_hcd and address 9
usb 1-5: device not accepting address 9, error -110
usb 1-5: new high speed USB device using ehci_hcd and address 10
usb 1-5: device not accepting address 10, error -110

~
usb 1-6: new high speed USB device using ehci_hcd and address 3
ehci_hcd 0000:00:1d.7: Unlink after no-IRQ? Controller is probably
using the wrong IRQ.
usb 1-6: device descriptor read/64, error -71
usb 1-6: device not accepting address 3, error -110
usb 1-6: new high speed USB device using ehci_hcd and address 4
usb 1-6: device not accepting address 4, error -110
usb 1-6: new high speed USB device using ehci_hcd and address 5
usb 1-6: device not accepting address 5, error -110
usb 1-6: new high speed USB device using ehci_hcd and address 6
usb 1-6: device not accepting address 6, error -110
~
lbrtchx
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71 

Previously lbrtchx.TakeThisOut@hotmail.com wrote:
>> What is this ''external minidrive'' exactly?
> a Toshiba 40.00 Gb HDD2171 MK40196GAX
> ~
> I started Linux/knoppix with the cheatcode
> ~
> acpi=off noacpi testcd init 2
> ~
> I ran dmesg:
> ~
> ...
> usb 1-1: new high speed USB device using ehci_hcd and address 2
> usb 1-1: device descriptor read/64, error -71
> usb 1-1: configuration #1 chosen from 1 choice
> scsi0 : SCSI emulation for USB Mass Storage devices
> usb-storage: device found at 2
> usb-storage: waiting for device to settle before scanning
> scsi 0:0:0:0: Direct-Access Generic USB Disk 9.02 PQ: 0
> ANSI: 2
> SCSI device sda: 78140160 512-byte hdwr sectors (40008 MB)
> sda: Write Protect is off
> sda: Mode Sense: 03 00 00 00
> sda: assuming drive cache: write through
> SCSI device sda: 78140160 512-byte hdwr sectors (40008 MB)
> sda: Write Protect is off
> sda: Mode Sense: 03 00 00 00
> sda: assuming drive cache: write through
> sda: sda1 sda2 sda3 sda4 < sda5 >
> sd 0:0:0:0: Attached scsi disk sda
> usb-storage: device scan complete
> ~
> then fdisk and got
> ~
> Disk /dev/sda: 40.0 GB, 40007761920 bytes
> 256 heads, 63 sectors/track, 4845 cylinders
> Units = cylinders of 16128 * 512 = 8257536 bytes

> Device Boot Start End Blocks Id System
> /dev/sda1 1 255 2056288+ 83 Linux
> /dev/sda2 256 1024 6201216 83 Linux
> /dev/sda3 1025 1892 6999552 c W95 FAT32
> (LBA)
> /dev/sda4 1893 4845 23812992 5 Extended
> /dev/sda5 1893 4845 23812960+ 83 Linux
> ~
> I am able to fdisk, mount and access this USB-based (it is also
> powered through the USB cable) external minidrive without any problems
> now, which makes me wonder how safe my perception is.
> ~
> Is there any way I could test the drive by other means? Even in a low
> level way to see what is really going on with it and try to tell apart
> hardware from software problems and if they are software ones, of
> which kind? Or do you think the drive si just fine (I will regularly
> backup my data anyway )
> ~
> lbrtchx

Well, I don't think you need to worry too much. If it reads and
writes fine, thebn it should be ok. However if something breaks,
it will likely be the USB interface. In that case you can still
connect the disk directly via IDE and get the data.

Arno
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71 

Previously lbrtchx RemoveThis @hotmail.com wrote:
> Notice I am still getting the pesky
> ~
> "device descriptor read/64, error -71"
> ~
> error message
> ~
> lbrtchx

Yes. But is does not seem to impact drive functionality.

Arno
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71 

Previously Mike Tomlinson <mike DeleteThis @jasper.org.uk> wrote:
> In article <1178275380.390203.168910 DeleteThis @n76g2000hsh.googlegroups.com>,
> lbrtchx DeleteThis @hotmail.com writes

>> acpi=off noacpi testcd init 2

> Shouldn't that be "acpi=off noapic" ?

I think it should.

Arno
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71 

In article <1178275380.390203.168910.RemoveThis@n76g2000hsh.googlegroups.com>,
lbrtchx.RemoveThis@hotmail.com writes

> acpi=off noacpi testcd init 2

Shouldn't that be "acpi=off noapic" ?

--
(\__/) Bunny says NO to Windows Vista!
(='.'=) http://www.badvista.org/
(")_(") http://www.cs.auckland.ac.nz/~pgut001/pubs/vista_cost.html
http://www.theinquirer.net/default.aspx?article=38926
http://www.schneier.com/crypto-gram-0702.html#8
http://www.theinquirer.net/default.aspx?article=39051
http://www.theinquirer.net/default.aspx?article=39087
http://www.theinquirer.net/default.aspx?article=37091
http://www.theinquirer.net/default.aspx?article=36653
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71 

In article <1178414299.780752.33660 RemoveThis @n76g2000hsh.googlegroups.com>,
lbrtchx RemoveThis @hotmail.com writes
> Hmm! Actually there is both:

You're missing the point. According to your posts, you're booting with
the kernel parameters "acpi=off noacpi" which do the same thing, so one
parameter is redundant. It sounds to me as if you don't realise that
ACPI and APIC are two different things.

When diagnosing possible hardware problems such as the one you're
having, it's useful to disable the ACPI BIOS with "acpi=off" and disable
the advanced programmable interrupt controller with "noacpi".

The APIC is relevant, as you mention getting this output:

"usb 1-4: new high speed USB device using ehci_hcd and address 3
ehci_hcd 0000:00:1d.7: Unlink after no-IRQ? Controller is probably
using the wrong IRQ."

This suggests an APIC routing problem, possibly due to a buggy BIOS, so
it's worth trying again with APIC turned off.

--
(\__/) Bunny says NO to Windows Vista!
(='.'=) http://www.badvista.org/
(")_(") http://www.cs.auckland.ac.nz/~pgut001/pubs/vista_cost.html
http://www.theinquirer.net/default.aspx?article=38926
http://www.schneier.com/crypto-gram-0702.html#8
http://www.theinquirer.net/default.aspx?article=39051
http://www.theinquirer.net/default.aspx?article=39087
http://www.theinquirer.net/default.aspx?article=37091
http://www.theinquirer.net/default.aspx?article=36653
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71 

On 3 Mai, 12:02, lbrtchx <lbrt... DeleteThis @hotmail.com> wrote:
> Hi,
> ~
> I am using knoppix 5.1.1 based on the Linux 2.6.19 kernel
> ~
> sh-3.1# uname -r
> 2.6.19
> ~
> I started Linux/knoppix with the cheatcode
> ~
> knoppix init 2
> ~
> then, after plugging in an external minidrive (before even starting X/KDE),
> I got:
> ~
> Synchronizing SCSI cache for disk sda:
> FAILED
> status = 0, message = 00, vhost = 1, driver = 00
> <7> APIC error on CPU00: 01(01)
> usb 1-2: device descriptor read/64, error -71
> usb 1-2: device descriptor read/64, error -71
> usb 1-2: device descriptor read/64, error -71
> usb 1-2: device descriptor read/64, error -71
> usb 1-2: device descriptor read/64, error -71
> usb 1-2: device descriptor read/64, error -71
> . . .
> ~
> I read from the error message and from some postings out there that it is
> related to the combination of USB + APIC (+ low speed devices + bad
> drivers?), that it also happens with printers, pen drives and wireless
> cards connected via USB, so I started Linux/knoppix with:
> ~
> knoppix apic=off noapic init 2
> ~
> then I didn't get the first error stanzas, but only the
> ~
> usb 1-2: device descriptor read/64, error -71
> usb 1-2: device descriptor read/64, error -71
> usb 1-2: device descriptor read/64, error -71
> . . .
> ~
> ones repeatedly
> ~
> Why are these problems happening?
> ~
> How can I fix them?
> ~
> Thanks
> lbrtchx

I had a bad (low quality) cable. Replacing it with an USB 2.0 spec
cable fixed it.
You should exclude other hard ware problems as well.
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71 

> I had a bad (low quality) cable. Replacing it with an USB 2.0 spec
> cable fixed it.
> You should exclude other hard ware problems as well.
~
Well, yeah, I guess!
~
Any specifics about what you just mentioned? Any way to test USB
cables to spec? What would be other the hardware problems?
~
lbrtchx
 >> Stay informed about: usb 1-2: device descriptor read/64, error -71