Problems with external 5V supply

[Håkan Berg]

Thanks for the interpretation!

Here's what happens when I insert the memory stick:

[  215.033111] usb 1-1.1: new high speed USB device number 15 using
musb-hdrc
[  215.137725] usb 1-1.1: device v0930 p6545 is not supported
[  215.148193] scsi3 : usb-storage 1-1.1:1.0
[  216.168670] scsi 3:0:0:0: Direct-Access              USB Flash Memory
PMAP PQ: 0 ANSI: 0 CCS
[  217.126190] sd 3:0:0:0: [sda] 15667200 512-byte logical blocks: (8.02
GB/7.47 GiB)
[  217.126770] sd 3:0:0:0: [sda] Write Protect is off
[  217.126800] sd 3:0:0:0: [sda] Mode Sense: 23 00 00 00
[  217.127349] sd 3:0:0:0: [sda] No Caching mode page present
[  217.133575] sd 3:0:0:0: [sda] Assuming drive cache: write through
[  217.147674] sd 3:0:0:0: [sda] No Caching mode page present
[  217.153350] sd 3:0:0:0: [sda] Assuming drive cache: write through
[  217.181915]  sda: sda1
[  217.197082] sd 3:0:0:0: [sda] No Caching mode page present
[  217.211608] sd 3:0:0:0: [sda] Assuming drive cache: write through
[  217.217742] sd 3:0:0:0: [sda] Attached SCSI removable disk

It seems to be high-speed, and it is automatically mounted. The folder pops
up on the desktop listing the content.

Very nice!

(Note that I use a rather old Snowball, no longer supported 100-00103-A12
with serial number SDK00136, or maybe it was 138, running Linux Ubuntu from
2011-12-21 build.)

/Hakan

Den 16 april 2012 06:33 skrev Supriya s KARANTH <
supriya.karanth at stericsson.com>:

> Hello Hakan,****
>
> ** **
>
> The log says that the****
>
> ** **
>
> **1)      **Hub is high speed****
>
> **2)      **Keyboard is full speed****
>
> **3)      **Mouse is low speed****
>
> ** **
>
> USB 2.0 supports all 3 speeds. ****
>
> ** **
>
> Could you please also check a Storage device/thumb drive also connected to
> your hub and try some transfers. ****
>
> ** **
>
> Thanks****
>
> Supriya****
>
> ** **
>
> *From:* Håkan Berg [mailto:hakan.pm.berg at gmail.com]
> *Sent:* Sunday, April 15, 2012 10:19 PM
> *To:* Kalle Vahlman
> *Cc:* Supriya s KARANTH; Patrik KLINGER; Richard CURNOW; Jacques Bride;
> users at igloocommunity.org
>
> *Subject:* Re: Problems with external 5V supply****
>
> ** **
>
> Thanks, Kalle!
>
>
> I did not know that. I'm also uncertain how to understand the dmesg log,
> so here is an excerpt showing what happens when I connect the hub with a
> mouse and a keyboard already attached (thus all three devices + a keboard
> card-reader are more or less detected):
>
> [  263.971099] usb 1-1: new *high speed USB* device number 2 using
> musb-hdrc
> [  264.122680] hub 1-1:1.0: *USB hub* found
> [  264.123199] hub 1-1:1.0: 4 ports detected
> [  264.411590] usb 1-1.3: new *full speed USB* device number 3 using
> musb-hdrc
> [  264.530029] usb 1-1.3: device v413c p2101 is not supported
> [  264.548858] input: Dell Dell Smart Card Reader *Keyboard *as
> /devices/platform/musb-ux500.0/musb-hdrc/usb1/1-1/1-1.3/1-1.3:1.0/input/input6
> [  264.549926] generic-usb 0003:413C:2101.0001: input: USB HID v1.11
> Keyboard [Dell Dell Smart Card Reader Keyboard] on usb-musb-hdrc-1.3/input0
> [  264.631408] usb 1-1.4: new *low speed USB* device number 4 using
> musb-hdrc
> [  264.758178] usb 1-1.4: device v045e p0040 is not supported
> [  264.781188] input: Microsoft Microsoft *Wheel Mouse* Optical® as
> /devices/platform/musb-ux500.0/musb-hdrc/usb1/1-1/1-1.4/1-1.4:1.0/input/input7
> [  264.787475] generic-usb 0003:045E:0040.0002: input: USB HID v1.00 Mouse
> [Microsoft Microsoft Wheel Mouse Optical®] on usb-musb-hdrc-1.4/input0
>
> /Håkan****
>
> Den 11 april 2012 11:58 skrev Kalle Vahlman <kalle.vahlman at movial.com>:***
> *
>
> 2012/4/11 Håkan Berg <hakan.pm.berg at gmail.com>:****
>
> > All USB 2.0 thus high-speed.****
>
> I'd like to point out that this statement is not entirely true; USB
> 2.0 does not dictate devices to be high-speed. For example I have a
> Logitech NX50 mouse that is a USB 2.0 device but works at low speed.
>
> I believe the most reliable way to see what speed it is operated at is
> plugging it in and looking for the messages about it in dmesg.****
>
>
> --
> Kalle Vahlman, Movial Creative Technologies Inc.
> Porkkalankatu 20, FI-00180 Helsinki
> Tel +358 9 8567 6400
> Fax +358 9 8567 6401
> www.movial.com****
>
> ** **
>
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