Re: USB UPS slows boot

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On 08/01/12 13:14, Alan Stern wrote:
> On Wed, 1 Aug 2012 bjlockie@xxxxxxxxx wrote:
> 
>>> That's progress.  Have you checked to see whether ehci-hcd is loaded
>>> before or after ohci-hcd?
>>
>> Is there a way to tell besides watching the screen (which scrolls too
>> fast) during boot?
> 
> Run the dmesg command.
> 
>>> Have you checked to see whether the disconnects occur if you plug the
>>> UPS in after the system has booted?
>>
>> It does but there were only 2 last time (before it was alot more).
> 
> That's still more than there should be.  However, it seems clear that 
> the problem lies in your UPS device.  At least it's not slowing down 
> your boot time any more.
> 
> Alan Stern

It pauses again but at my USB Logitech dongle (for wireless keyboard/mouse), grrr.


> $ dmesg | grep hcd
> [    1.606907] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> [    1.607876] ehci_hcd 0000:00:12.2: EHCI Host Controller
> [    1.608863] ehci_hcd 0000:00:12.2: new USB bus registered, assigned bus number 1
> [    1.609890] ehci_hcd 0000:00:12.2: applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround
> [    1.610930] ehci_hcd 0000:00:12.2: debug port 1
> [    1.611893] ehci_hcd 0000:00:12.2: irq 17, io mem 0xfd109000
> [    1.618481] ehci_hcd 0000:00:12.2: USB 2.0 started, EHCI 1.00
> [    1.622128] usb usb1: Manufacturer: Linux 3.5.0+ ehci_hcd
> [    1.626438] ehci_hcd 0000:00:13.2: EHCI Host Controller
> [    1.627481] ehci_hcd 0000:00:13.2: new USB bus registered, assigned bus number 2
> [    1.628591] ehci_hcd 0000:00:13.2: applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround
> [    1.629722] ehci_hcd 0000:00:13.2: debug port 1
> [    1.630794] ehci_hcd 0000:00:13.2: irq 17, io mem 0xfd107000
> [    1.637405] ehci_hcd 0000:00:13.2: USB 2.0 started, EHCI 1.00
> [    1.641138] usb usb2: Manufacturer: Linux 3.5.0+ ehci_hcd
> [    1.645337] ehci_hcd 0000:00:16.2: EHCI Host Controller
> [    1.646351] ehci_hcd 0000:00:16.2: new USB bus registered, assigned bus number 3
> [    1.647410] ehci_hcd 0000:00:16.2: applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround
> [    1.648495] ehci_hcd 0000:00:16.2: debug port 1
> [    1.649537] ehci_hcd 0000:00:16.2: irq 17, io mem 0xfd104000
> [    1.656357] ehci_hcd 0000:00:16.2: USB 2.0 started, EHCI 1.00
> [    1.660010] usb usb3: Manufacturer: Linux 3.5.0+ ehci_hcd
> [    1.664263] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> [    1.665255] ohci_hcd 0000:00:12.0: OHCI Host Controller
> [    1.666271] ohci_hcd 0000:00:12.0: new USB bus registered, assigned bus number 4
> [    1.667319] ohci_hcd 0000:00:12.0: irq 18, io mem 0xfd10a000
> [    1.725700] usb usb4: Manufacturer: Linux 3.5.0+ ohci_hcd
> [    1.729694] ohci_hcd 0000:00:13.0: OHCI Host Controller
> [    1.730594] ohci_hcd 0000:00:13.0: new USB bus registered, assigned bus number 5
> [    1.731571] ohci_hcd 0000:00:13.0: irq 18, io mem 0xfd108000
> [    1.789311] usb usb5: Manufacturer: Linux 3.5.0+ ohci_hcd
> [    1.793139] ohci_hcd 0000:00:14.5: OHCI Host Controller
> [    1.794011] ohci_hcd 0000:00:14.5: new USB bus registered, assigned bus number 6
> [    1.794974] ohci_hcd 0000:00:14.5: irq 18, io mem 0xfd106000
> [    1.851971] usb usb6: Manufacturer: Linux 3.5.0+ ohci_hcd
> [    1.855622] ohci_hcd 0000:00:16.0: OHCI Host Controller
> [    1.856446] ohci_hcd 0000:00:16.0: new USB bus registered, assigned bus number 7
> [    1.857358] ohci_hcd 0000:00:16.0: irq 18, io mem 0xfd105000
> [    1.914736] usb usb7: Manufacturer: Linux 3.5.0+ ohci_hcd
> [    1.915206] xhci_hcd 0000:02:00.0: xHCI Host Controller
> [    1.915217] xhci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 8
> [    1.915330] xhci_hcd 0000:02:00.0: irq 48, io mem 0xfd500000
> [    1.915400] xhci_hcd 0000:02:00.0: irq 73 for MSI/MSI-X
> [    1.915484] usb usb8: Manufacturer: Linux 3.5.0+ xhci_hcd
> [    1.915796] xhci_hcd 0000:02:00.0: xHCI Host Controller
> [    1.915804] xhci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 9
> [    1.915845] usb usb9: Manufacturer: Linux 3.5.0+ xhci_hcd

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