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Old 01-17-2015, 04:49 PM   #1
NotionCommotion
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Is it time for a modem funeral?


I have a USB fax modem, and it logs the following errors when turned on.

I know it is impossible to know for sure, but think it is hardware related? Any chance to salvage?

Also, what are the steps to start troubleshooting?

Thanks

Code:
Jan 17 14:38:26 devserver kernel: generic-usb 0003:0461:4D0F.0066: input,hidraw2: USB HID v1.11 Mouse [PixArt USB Optical Mouse] on usb-0000:00:1a.0-1.2/input0
Jan 17 14:38:41 devserver kernel: usb 3-1: new full speed USB device number 24 using xhci_hcd
Jan 17 14:38:41 devserver kernel: usb 3-1: device descriptor read/all, error -71
Jan 17 14:38:41 devserver kernel: usb 3-1: new full speed USB device number 25 using xhci_hcd
Jan 17 14:38:41 devserver kernel: usb 3-1: device descriptor read/all, error -71
Jan 17 14:38:41 devserver kernel: usb 3-1: new full speed USB device number 26 using xhci_hcd
Jan 17 14:38:41 devserver kernel: usb 3-1: device descriptor read/8, error -71
Jan 17 14:38:41 devserver kernel: usb 3-1: device descriptor read/8, error -71
Jan 17 14:38:41 devserver kernel: usb 3-1: new full speed USB device number 27 using xhci_hcd
Jan 17 14:38:41 devserver kernel: usb 3-1: device descriptor read/8, error -71
Jan 17 14:38:42 devserver kernel: usb 3-1: device descriptor read/8, error -71
Jan 17 14:38:42 devserver kernel: hub 3-0:1.0: unable to enumerate USB device on port 1
 
Old 01-17-2015, 07:28 PM   #2
ferrari
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It could just be that the xhci_hcd driver just doesn't play nice with this hardware. There are numerous threads on this and similar behaviour. Do you have any USB 2 ports available on this computer? If you don't need USB 3 support, then you might be able to disable and force EHCI support via the BIOS. You might also want to investigate existing bug reports related to this behaviour.
 
Old 01-17-2015, 09:50 PM   #3
jefro
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ferrari has as good a guess as any. Current or voltage too.

Other ideas may be to see if your kernel still has support for the device. modprobe and lsusb maybe.


Be sure to remove any external usb hubs.
 
Old 01-21-2015, 11:24 PM   #4
Alpha90
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Have you updated your kernel recently because if this started after a kernel update the new kernel probably does not have the driver built for your usb modem or an bug was introduced to the existing driver. I had a debian machine awhile back that had a similar problem with a USB bluetooth dongle after upgrading to the 3.0 branch of the kernel. I ended up having to go back to an earlier kernel.

If your system has not been upgraded or changed after this started happening then the device itself might be damaged and dieing.
 
  


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