26.11.2014, 06:30, "Charles Lepple" <clep...@gmail.com>: > On Nov 25, 2014, at 8:17 PM, Victor Porton <por...@narod.ru> wrote: >> Well, also below in dmesg: >> >> [ 190.249219] usb 3-1.3: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb rqt >> 33 rq 9 len 8 ret -110 > > -110 is -ETIMEDOUT. >> 26.11.2014, 03:05, "Victor Porton" <por...@narod.ru>: >>> A fragment of dmesg output (here idVendor=0665, idProduct=5161 is the UPS; >>> the webcam is idVendor=17a1, idProduct=0128): > > ... >>> [ 1.521492] usb 3-1.3: new low-speed USB device number 3 using ehci-pci >>> [ 1.619257] usb 3-1.3: New USB device found, idVendor=0665, >>> idProduct=5161 > > ... >>> [ 1.693685] usb 3-1.4: new full-speed USB device number 4 using ehci-pci >>> [ 1.786441] usb 3-1.4: New USB device found, idVendor=17a1, >>> idProduct=0128 > > If I read this correctly, you have a low-speed (1.5 Mbit/sec) UPS on the same > bus as a full-speed (12 Mbit/sec) webcam. These days, I would expect a webcam > to operate at high speed (480 MBit/sec). I don't know how the Linux kernel > schedules USB requests, but it is entirely possible that under these > conditions, Cheese is saturating the bus. > > Can you plug either of the two devices into different ports?
I re-plugged the camera into USB3.0 port to which was connected the UPS and UPS into a freed USB2.0 port. This solved the problem, even despite of the webcam is accordingly dmesg "USB2.0 JPEG WebCam" (not USB3.0). I will report the bug in Debian. >>>> Shall we consider this very message as a bug report, or should I report >>>> a bug otherwise somewhere? > > Since the webcam program is interfering with NUT (rather than NUT preventing > the webcam program from working), I would tend to consider it a bug in Cheese > (or maybe the kernel USB drivers). Either way, you may get better results > filing a bug at http://bugs.debian.org . -- Victor Porton - http://portonvictor.org _______________________________________________ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser
