On Fri, May 18, 2018 at 08:41:28AM +0200, Greg KH wrote: > On Thu, May 17, 2018 at 01:43:35PM -0400, ant wrote: > > > > Did I not say it right? > > > > Or perhaps a kernel or some other issue? > > > > > > ===== > > > > > > (no need to CC I'm subscribed to list), hi, thank you for replying, ... > What do you mean exactly by "dropped"? the keyboard stops working at various times. i may be in the middle of typing and it no longer shows anything happening, sometimes it will eventually reconnect and other times it will not (at which point i have to unplug it and plug it back in). > The kernel log you posted > doesn't show any USB devices going away, so it's a bit hard to know if > the kernel really thought the device is gone, or the device just stopped > working, right? i thought that the following lines showed the change started coming from the kernel: KERNEL[8256.344251] change /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/0003:17F6:0830.000B/input/inpu t27/input27::numlock (leds) which after some moments eventually ends up with: UDEV [8256.414787] unbind /devices/pci0000:00/0000:00:14.0/usb1/1-6 (usb) UDEV [8256.416250] remove /devices/pci0000:00/0000:00:14.0/usb1/1-6 (usb) [ 8256.041205] ant kernel: usb 1-6: USB disconnect, device number 16 which to me looks like a USB device being disconnected? i'd be happy for any way to tell the kernel to not do this as any kind of temporary|permanent workaround. i don't have any power keys on the keyboard. i tried reading up on X configuration and input and disabling things via X11, but i've not gotten very far down that road. i also tried installing laptop power tools and turning things off via that but because this is a desktop i don't think it made any difference, keyboard still stops working at times. > Does this keyboard work properly on other machines / operating systems? it worked with my previous machine with no issues, but that machine is gone as of February. i was also running Debian testing and Debian stable (on a 2nd partition) on that system. i have used Linus's stock kernel to boot from a USB stick and the issue is there too (v4.17-rc3), my connection isn't that fast so grabbing other images isn't quick but if i can get them and boot from a USB stick i'll do it if it helps. i haven't compiled the lastest rc5 or tried that yet. i didn't think you'd care too much about a report from Debian stable, but i finally got that installed and booting. i can leave that running today while i'm working on other things and see what the logs say. ant -- 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