Comment 10 for bug 1678477

Same problem for me using Ubuntu Zesty (17.04)
I noticed two different types of error:
The first one has error code -71, and I don't know what does it means:

Jul 15 10:15:17 achille kernel: [ 202.060450] usb 3-14: new full-speed USB device number 14 using xhci_hcd
Jul 15 10:15:18 achille kernel: [ 202.800931] usb 3-14: unable to read config index 0 descriptor/all
Jul 15 10:15:18 achille kernel: [ 202.800934] usb 3-14: can't read configurations, error -71

The second one has code -110, which seems to be related to a current drain problem:

Jul 15 10:15:24 achille kernel: [ 209.099650] usb 3-14: new full-speed USB device number 16 using xhci_hcd
Jul 15 10:15:30 achille kernel: [ 214.483027] usb 3-14: unable to read config index 0 descriptor/all
Jul 15 10:15:30 achille kernel: [ 214.483029] usb 3-14: can't read configurations, error -110

This USB keyboard has two USB plugs, one for data and one for power. I connected both of them to different USB ports in order to have enough power, but the problem persists.

No problems occurs during UEFI boot, on Grub menu and using other Linux distributions (some tests on Slackware and Debian, but only for few minutes on "live boot"). Even Windows seems to have no problems.

Can it be some power management problem of ubuntu linux kernel?
During boot (after Grub), the keyboard leds shut off until all kernel modules are loaded. After that there are two possible behaviours: everything works fine, or keyboard doesn't works and you have these messages on syslog.