Re: [gentoo-user] Intermittent USB device failures

[Volker Armin Hemmann <volkerarmin@googlemail.com>]

Am 20.08.2014 um 23:02 schrieb Mike Edenfield:
> (BTW: I'm terribly sorry for the horrid formatting and duplicate mails; I'm stuck using Outlook until I get this resolved)
>
>> From: Volker Armin Hemmann [mailto:volkerarmin@googlemail.com]
>> Sent: Wednesday, August 20, 2014 12:55 PM
>>
>> Am 20.08.2014 um 02:28 schrieb Mike Edenfield:
>>>> From: Volker Armin Hemmann [mailto:volkerarmin@googlemail.com]
>>>> Sent: Monday, August 18, 2014 8:01 PM
>>>>
>>>> Am 17.08.2014 um 12:33 schrieb Mick:
>>>>> On Sunday 17 Aug 2014 02:56:58 Mike Edenfield wrote:
>>>>>
>>>>>> If I try to do the same thing after the mouse has locked up, modprobe
>>>>>> stalls trying to unload the first module:
>>>>>>
>>>>>> wombat kutulu # modprobe -r -v ohci_pci
>>>>>> rmmod ohci_pci
>>>>>>
>>>>>> wombat kutulu # dmesg
>>>>>> [38091.627389] ohci-pci 0000:00:0b.0: remove, state 1 [38091.627400] usb usb2: USB disconnect, device number 1
>>>>>>
>>>>> Do you need ohci-pci?  Have you tried running a kernel without it and
>>>>> check if your hardware still works as intended?
>>>> I would try that too,,,
>>> I booted a kernel without ohci-pci and no, it doesn't quite work, though I'm
>>> pretty confused by it. With OHCI removed from my kernel, neither my
>>> mouse nor my keyboard register as attached, but it doesn't seem to matter
>>> which ports I put them in. I have 6 USB ports, 2 pair on the motherboard and
>>> a third pair in the front of the case, and I expected that the back four would
>>> be OCHI and the front two EHCI (or something similr), but they don't seem to
>>> follow that pattern. Anywhere I plug my flash drive or camera in, it gets
>>> routed through the ECHI controller, while anywhere I plug my keyboard or
>>> mouse in gets routed through the OHCI controller. For example, I have my
>>> keyword and a flash drive plugged into the two front-mounted ports, and
>>> when I boot, I get this:
>>> Is that normal?
>  
>> well, today almost all usb controllers 'decide' what to use depending on
>> the device plugged in. There are no dedicated 1.1 or 2.0 ports.
>>
>> And yes, not able to see the devices without ohci might be the norm.
>>
>> Do you have the problems with all ports?
> Yes, I've tried the mouse and keyboard in all 6 ports and haven’t seen any significant change in behavior.
>
> --Mike
>
>
>

you said you used 6 different kernel versions - which one? Did you use
vanilla or gentoo sources? And... maybe config?