Red Hat Bugzilla – Bug 451579
"unable to enumerate USB device" with macally TI TUSB2040
Last modified: 2009-07-14 11:50:51 EDT
Description of problem:
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot with Macally USB hub powered on and plugged in, and a Garmin 760 plugged
into the hub. The Garmin software version is 2.5.
2. Observe dmesg with and without Macally hub plugged in, and Garmin plugged in
At boot, red power light is on.
During grub boot, the four green port lights are on.
During Fedora boot, the green lights go out, light briefly, and go out again.
A Garmin nuvi 760 should be mounted as a FAT disk. I don't know if the hub
lights are supposed to show data flow or not. I hope I can find documentation on
Computer is a Toshiba PQF20C-XG102E. The string "F20" does not appear in any of
my dmesg outputs, so my model is not being detected specifically.
Searching for "Toshiba" yields the line "ACPI: DMI detected: Toshiba".
I suspect the hub is used/returned, as I bought it in a used/new computer store
with no packaging or documentation.
When plugged in directly, the Garmin turns off and appears as a FAT disk.
When the computer is shut down, the Garmin turns on.
When plugged into the hub, the Garmin turns on to full brightness and shows no
battery remaining display, meaning it is running on external power and probably
charging its battery at the same time (hooray!), reducing cycling of the
non-replaceable Li-ion battery.
When the computer is shut down, the Garmin warns of the loss of external power,
and offers to switch to battery or shut down. That would be a nice feature to be
able to activate at will, for the Garmin doesn't do that when plugged in directly.
I have attached dmesgs of the various boot conditions, and an lsusb listing with
just the hub.
Significant differences are as follows:
diff3 from no usb, to hub only, to hub and Garmin: See attachment.
Part of diff3 \
hub 1-0:1.0: unable to enumerate USB device on port 5
usb 3-1: new full speed USB device using uhci_hcd and address 2
usb 3-1: configuration #1 chosen from 1 choice
hub 3-1:1.0: USB hub found
hub 3-1:1.0: 4 ports detected
usb 3-1: New USB device found, idVendor=0451, idProduct=1446
usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
diff of dmesg with no usb and just the hub:
*** dmesg_126.96.36.199-55.fc9.i686 2008-06-15 18:16:20.000000000 -0400
--- dmesg_188.8.131.52-55.fc9.i686_with_macally_hub 2008-06-15 18:41:12.000000000 -0400
*** 357 ****
--- 358 ----
+ hub 1-0:1.0: unable to enumerate USB device on port 5
*** 382 ****
--- 384,389 ----
+ usb 3-1: new full speed USB device using uhci_hcd and address 2
+ usb 3-1: configuration #1 chosen from 1 choice
+ hub 3-1:1.0: USB hub found
+ hub 3-1:1.0: 4 ports detected
+ usb 3-1: New USB device found, idVendor=0451, idProduct=1446
+ usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Created attachment 309420 [details]
dmesg output with no external USB's attached
Created attachment 309421 [details]
dmesg output with just the macally
Created attachment 309423 [details]
dmesg output with macally and Garmin plugged into it
Created attachment 309424 [details]
dmesg output with just the Garmin, no hub
Created attachment 309426 [details]
diff3 of dmesg output with no usb, macally-only, and macally_to_Garmin
Created attachment 309427 [details]
lsusb output with just the hub
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