Hi, I recently purchased a new Easton 5E UPS. I plugged the USB cable into my computer so I could use the NUT UPS tools. However every so often NUT fails to connect to the device after a boot.
Looking at dmesg I see errors like this: [ 3.277075] usb 1-9: new low-speed USB device number 6 using xhci_hcd [ 3.302091] usb 1-9: device descriptor read/8, error -32 [ 3.430241] usb 1-9: device descriptor read/8, error -32 [ 3.653526] usb 1-9: new low-speed USB device number 7 using xhci_hcd [ 3.678473] usb 1-9: device descriptor read/8, error -32 [ 3.824288] usb 1-9: device descriptor read/8, error -32 [ 4.045977] usb 1-9: new low-speed USB device number 8 using xhci_hcd [ 4.071018] usb 1-9: device descriptor read/8, error -32 [ 4.199046] usb 1-9: device descriptor read/8, error -32 [ 4.422439] usb 1-9: new low-speed USB device number 9 using xhci_hcd [ 4.451464] usb 1-9: device descriptor read/8, error -32 [ 4.579618] usb 1-9: device descriptor read/8, error -32 I have tried to plug it into every USB port (including the USB 3.0 ones) and I still get these errors. I discovered that power cycling the UPS will fix it for a while, and also unplugging and replugging the USB cable will also fix it sometimes. I have observed the problem on both an Asus P9D-I motherboard with the Intel C222 chipset and on the Asus H87M-E motherboard with the Intel H87 chipset. I emailed Eaton support but they don't know what the issue is. They want me to confirm that it is not Linux or PC issue before I return it for testing under warranty. They also said that all warranty testing is performed under Windows only :-(. How can I be sure that this is a problem with the device and not my computer before I return it? I am on Ubuntu Server 14.04 x86-64 bit. The kernel version is: Linux version 3.13.0-32-generic (buildd@kissel) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 (Ubuntu 3.13.0-2.57-generic 3.13.11.4) P.S. Please reply all so I can get a copy of the reply. Leith -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
