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I thought I would post this here for the archives and google in case |
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someone else has the same problem. |
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|
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Tonight I rebooted for the first time in 60 days. In that time I've |
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changed from gentoo-sources-2.6.29-r1 to 2.6.29-r5 and countless |
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updates to my ~amd64 world. |
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|
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I have an external LaCie 2TB USB hard drive which has been in use |
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those whole 60 days without problems. Much to my dismay, after |
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rebooting and plugging it in I got this in my dmesg: |
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|
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[ 144.963008] usb 2-7: new full speed USB device using ohci_hcd and |
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address 9 |
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[ 145.127007] usb 2-7: device descriptor read/64, error -62 |
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[ 145.796006] usb 2-7: device not accepting address 9, error -62 |
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[ 145.953007] usb 2-7: new full speed USB device using ohci_hcd and |
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address 10 |
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[ 146.117007] usb 2-7: device descriptor read/64, error -62 |
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[ 146.382007] usb 2-7: device descriptor read/64, error -62 |
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[ 146.640007] usb 2-7: new full speed USB device using ohci_hcd and |
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address 11 |
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[ 147.044914] usb 2-7: device not accepting address 11, error -62 |
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[ 147.201007] usb 2-7: new full speed USB device using ohci_hcd and |
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address 12 |
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[ 147.605006] usb 2-7: device not accepting address 12, error -62 |
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[ 147.605010] hub 2-0:1.0: unable to enumerate USB device on port 7 |
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|
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I tried unplugging and replugging both the USB and power cables |
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several times but still had the same error. After a bit of Googling I |
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saw one old post on another distro's site that suggested it might be a |
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power issue -- not with the power to the drive, but power to the USB |
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hub on the motherboard. In fact, I had at the time plugged in these |
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USB devices: keyboard, mouse, joystick, hard drive, monitor (which has |
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a two-port hub), webcam, and scanner. I also charge my cell phone via |
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USB, though it was not connected at the time. All 4 USB ports on the |
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back of the motherboard were in use, which is where the HDD was |
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plugged in, as well as 2 more of the "external" (case) ports which |
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also come from the motherboard. So I unplugged everything except for |
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the keyboard and mouse, then plugged the HDD back in to the same USB |
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port and magic! It works! fsck found no errors, my data is safe... and |
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I am /yet/ /again/ reminded to make backups of everything. |
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|
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I cannot be sure that my USB power was being over-utilized, but I have |
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unplugged and re-plugged it a few times and it has kept working so |
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far. Perhaps I have a bad port or cable that only sometimes works and |
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happened to work by coincidence after I unplugged the other devices. |
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|
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I thought I'd post it here in case anyone else like me has a mild |
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heart-attack thinking their drive has died. There is hope! :) |
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