[Nut-upsuser] 18.104.22.168: USB/UPS connectivity issue on Intel DP55KG Motherboard [DEBUG logs included upsd/upsmon/usbhid-ups]
jpiszcz at lucidpixels.com
Thu Oct 22 22:50:37 UTC 2009
On Wed, 21 Oct 2009, Justin Piszcz wrote:
> On Wed, 21 Oct 2009, Arjen de Korte wrote:
>> Citeren Justin Piszcz <jpiszcz at lucidpixels.com>:
>>> Even without the poll option, the error persists, but it takes longer to
>>> trigger (3-5 minutes vs. 1-2 minutes @ 5 second follreq)
>> Have you also tried setting
>> pollinterval = 10
>> in ups.conf, to increase the polling interval for this UPS?
>> If this doesn't work either, I fear there is little else we can do for you.
>> Occasionally, the connection may be lost (due to EMI, plugging other
>> devices on the same USB bus, etc), but if this happens almost every minute,
>> there must be something wrong.
>> The connection to the UPS should be fairly reliable, if not this is either
>> kernel or hardware related. It doesn't seem to be the first, so your only
>> other option would be to try this on different hardware (which would be a
>> nice test, to see if you don't just happen to have a broken USB controller
>> on your mainboard).
>> Best regards, Arjen
>> Please keep list traffic on the list
>> Nut-upsuser mailing list
>> Nut-upsuser at lists.alioth.debian.org
> If there was a problem with the USB bus, would attached CD/DVD & keyboard
> and mouse devices / usb sticks also have problems?
> I only have problems with the UPS.
> I power cycled the UPS and reconnected it, and the problem persists.
> Could this be a newly discovered issue with the latest USB chips in the
> Intel P55 chipset?
Is it possible that a different USB Chip may act differently causing this
problem? As I noted CD/DVD (USB) and all other USB devices function properly.
E.g. in the future others may have the same issue?
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