Hello,
I've got Genius Ergomedia 700 keyboard which hangs up after waking up
from suspend or running `ls -v'. I seems that what makes the device
misbehave is GET_STATUS request. Issuing it with piece of libusb code
caused exactly the same type of hang up - device responds to all
control requests but interrupt requests return -EPIPE.
Is it even possible for device to have buggy implementation of such a
basic request? Truth be said I failed to force Windows to use it...
Can you suggest any procedure which may bring the device back to life?
Reloading usbhid does not help, reloading whole USB (*hci_hcd) does. I
tried setting configuration and playing with (boot) protocol but it
doesn't help either.
-Jakub
# lsusb -v -d"05d5:8001"
Bus 004 Device 005: ID 05d5:8001 Super Gate Technology Co., Ltd
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x05d5 Super Gate Technology Co., Ltd
idProduct 0x8001
bcdDevice 1.00
iManufacturer 1 KYE 4D device
iProduct 2 Ergomedia
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 59
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 2 Ergomedia
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 1 Keyboard
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 65
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 10
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 50
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 10
Device Status: 0xffff
Self Powered
Remote Wakeup Enabled
Test Mode
Debug Mode
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