On Mon, Apr 25, 2016 at 09:16:51PM -0600, Wade Berrier wrote: > On Apr 25 18:15, Sean Young wrote: > > On Sun, Apr 24, 2016 at 10:06:33PM -0600, Wade Berrier wrote: > > > Hello, > > > > > > I have a mceusb compatible transceiver that only seems to work with > > > certain computers. I'm testing this on centos7 (3.10.0) and fedora23 > > > (4.4.7). > > > > > > The only difference I can see is that the working computer shows > > > "using uhci_hcd" and the non working shows "using xhci_hcd". > > > > > > Here's the dmesg output of the non-working version: > > > > > > --------------------- > > > > > > [ 217.951079] usb 1-5: new full-speed USB device number 10 using xhci_hcd > > > [ 218.104087] usb 1-5: device descriptor read/64, error -71 > > > [ 218.371010] usb 1-5: config 1 interface 0 altsetting 0 endpoint 0x1 has an invalid bInterval 0, changing to 32 > > > [ 218.371019] usb 1-5: config 1 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 32 > > > > That's odd. Can you post a "lsusb -vvv" of the device please? > > > > Sure. > > ------------------- > > Bus 002 Device 009: ID 1784:0006 TopSeed Technology Corp. eHome Infrared Transceiver > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 0 > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 8 > idVendor 0x1784 TopSeed Technology Corp. > idProduct 0x0006 eHome Infrared Transceiver > bcdDevice 1.02 > iManufacturer 1 TopSeed Technology Corp. > iProduct 2 eHome Infrared Transceiver > iSerial 3 TS004RrP > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 32 > bNumInterfaces 1 > bConfigurationValue 1 > iConfiguration 0 > bmAttributes 0xa0 > (Bus Powered) > Remote Wakeup > MaxPower 100mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 255 Vendor Specific Class > bInterfaceSubClass 255 Vendor Specific Subclass > bInterfaceProtocol 255 Vendor Specific Protocol > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x01 EP 1 OUT > bmAttributes 3 > Transfer Type Interrupt > Synch Type None > Usage Type Data > wMaxPacketSize 0x0020 1x 32 bytes > bInterval 0 That's wrong indeed. It might be interesting to see if there is anything in the xhci debug messages with (in Fedora 23): echo "file xhci*.c +p" > /sys/kernel/debug/dynamic_debug/control echo "file mceusb.c +p" > /sys/kernel/debug/dynamic_debug/control And then plug in the receiver, and try to send IR to it with a remote. You should have quite a few kernel messages in the journal. > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes 3 > Transfer Type Interrupt > Synch Type None > Usage Type Data > wMaxPacketSize 0x0020 1x 32 bytes > bInterval 0 > Device Status: 0x0001 > Self Powered > > ------------------- > > Also, here's a link to a response on the lirc list: > > https://sourceforge.net/p/lirc/mailman/message/35039126/ That seems suggest that mode2 works but lirc does not. It would be nice if that could be narrowed down a bit. Sean -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
