> > Cleware GMBH is a German company producing all kinds of USB devices. > > Switches, lights, sensors, etc. > > As a hobbyist, I do the Linux support for them (I wrote a userspace > > program to control their devices). > > Now a new range of products are to be released with new firmware. I > > think I'm seeing problems with them and I would like to discuss them > > here before bothering Cleware. > > When the device is plugged in, I can access it, somewhat. Why somewhat? > > Because it looks as if it is "thrown out" and reconnected each 6-7 > > seconds: > > [715607.610601] usb 3-3: USB disconnect, device number 93 > > [715607.976312] usb 3-3: new low-speed USB device number 94 using xhci_hcd > > [715607.997641] usb 3-3: New USB device found, idVendor=0d50, idProduct=0010 > > [715607.997644] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > > [715607.997645] usb 3-3: Product: USB-Temp > > [715607.997647] usb 3-3: Manufacturer: Cleware GmbH > > [715607.997648] usb 3-3: SerialNumber: 63813 > > [715607.997807] usb 3-3: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes > > [715607.997810] usb 3-3: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes > > [715608.000742] hid-generic 0003:0D50:0010.0934: hiddev0,hidraw1: USB HID v1.11 Device [Cleware GmbH USB-Temp] on usb-0000:00:14.0-3/input0 > > [715614.701038] usb 3-3: USB disconnect, device number 94 > > [715615.070236] usb 3-3: new low-speed USB device number 95 using xhci_hcd > > Does the device behave the same way if you plug it into a USB-2 port > instead of a USB-3 port? This alienware laptop seems to have only usb3 ports: they look all the same for color and description. So I tried it on my asus eee pc 1015 (seashell) and there it behaves the same with kernel 3.9.1 and 3.2.0. Oh and on my raspberry pi with 3.9.8 kernel it's also doing this. > > My question now is: is this a Linux kernel problem? Or a problem with > > the firmware of these devices? If it is the latter case, please (please) > > tell me (if possible) what it is doing wrong. > There's no way to tell for certain from just the kernel log. However, > if the device behaves differently when plugged into a USB-2 port then > most likely the problem isn't in the device. Folkert van Heusden -- www.vanheusden.com/multitail - win een vlaai van multivlaai! zorg ervoor dat multitail opgenomen wordt in Fedora Core, AIX, Solaris of HP/UX en win een vlaai naar keuze ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
