Hello, Thank you for your quick answer. I just have compiled the last stable kernel and I'm having the same issue. This is Lliurex (based in ubuntu) [ 2016.280112] usb 8-2: USB disconnect, device number 2 [ 2017.944091] usb 8-2: new low-speed USB device number 3 using uhci_hcd [ 2018.165147] usb 8-2: New USB device found, idVendor=0694, idProduct=0001 [ 2018.165151] usb 8-2: New USB device strings: Mfr=4, Product=26, SerialNumber=0 [ 2018.165153] usb 8-2: Product: LEGO USB Tower [ 2018.165155] usb 8-2: Manufacturer: LEGO Group [ 2018.168352] legousbtower 8-2:1.0: LEGO USB Tower get version control request failed [ 2018.168361] legousbtower: probe of 8-2:1.0 failed with error -11 lliurex@MACROHPCompaq:~$ uname -a Linux MACROHPCompaq 4.10.11 #1 SMP Wed Apr 19 14:55:04 CEST 2017 x86_64 x86_64 x86_64 GNU/Linux I also tried in a different computer with manjaro (based in arch): [ 1613.925559] legousbtower 2-2:1.0: LEGO USB Tower get version control request failed [ 1613.925569] legousbtower: probe of 2-2:1.0 failed with error -11 [alviboi@portatil ~]$ uname -a Linux portatil 4.10.10-1-MANJARO #1 SMP PREEMPT Wed Apr 12 21:35:07 UTC 2017 x86_64 GNU/Linux 2017-04-20 10:17 GMT+02:00 Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>: > On Thu, Apr 20, 2017 at 09:42:50AM +0200, Alfredo Rafael Vicente Boix wrote: >> Hello, >> >> My name is Alfredo from Spain, I'm a secondary school teacher and I >> worked with my students with the lego usb tower, I write you in >> reference to the following commit >> (2fae9e5a7babada041e2e161699ade2447a01989): >> >> patch: 9363741 >> >> I have a little problem with the legousbtower module of kernel. I was >> working with kernel 4.4 and I had no problem with this module, each >> time that I connected the tower I have the following message in my >> log: >> >> [ 4927.822527] usb 3-1: new low-speed USB device number 2 using xhci_hcd >> [ 4928.022168] usb 3-1: New USB device found, idVendor=0694, idProduct=0001 >> [ 4928.022185] usb 3-1: New USB device strings: Mfr=4, Product=26, >> SerialNumber=0 >> [ 4928.022188] usb 3-1: Product: LEGO USB Tower >> [ 4928.022190] usb 3-1: Manufacturer: LEGO Group >> [ 4929.914818] legousbtower 3-1:1.0: LEGO USB Tower firmware version >> is 1.0 build 134 >> [ 4929.915157] legousbtower 3-1:1.0: LEGO USB Tower #-160 now attached >> to major 180 minor 0 >> [ 4929.915517] usbcore: registered new interface driver legousbtower >> >> >> And I can use nqc without any problems. >> >> Since kernel 4.9 (I've tested it with kernel 4.9 and 4.10), I'm having >> the same issue. Each time that I connect the legousbtower I have this >> error: >> >> [ 51.036609] usb 1-2: USB disconnect, device number 5 >> [ 53.025125] usb 1-2: new low-speed USB device number 6 using xhci_hcd >> [ 53.173087] legousbtower 1-2:1.0: LEGO USB Tower get version >> control request failed > > This looks like a xhci bug/issue, and not specifically a legousbtower > issue. > > What exact kernel release numbers did you try? Can you try the latest > 4.10.11 release? There have been a number of xhci bugfixes recently > (since 4.9.0) that hopefully should resolve issues like this. > > Or you can try 4.9.23, that too should have the issues fixed. > > Please let us know if that works or not. > > thanks, > > greg k-h -- 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
