cherry keyboard issue
I recently posted a query on the peripheral hardware forum about a problem I was having with a Cherry G84-4100 USB keyboard that would not work on my desktop PC but would work on other computers, including my laptop which has same version of FreeBSD on it. The thread can be found here: http://forums.freebsd.org/showthread.php?t=28503 The final reply, from wblock, was that the problem was a USB one and should be posted here. In fact, I decided to leave it and just use another keyboard. However, Santa kindly brought me a Cherry G80-3000 for christmas and this does nor work either; exactly the same problem occurs with the device not recognised. These are quite expensive keyboards: not at DAS or Filco prices but retailing for over £60 in UK and using expensive Cherry switches, so not some bit of cheap junk that might not cause all that much surprise by not working. They are also quite popular so it's hard to believe I'm the only person using one. I have got it to work by connecting it to the PS/2 port via an adaptor so it's not the end of the world. However, these are unlikely to be supported for much longer so it would be better if it would work via USB port. As I said in the original forum posting, every other USB keyboard I have tried has worked, both from boot and hot plugged. This is the only time I have ever used a PS/2 connection. I can only assume it is something to do with whatever controller Cherry use within the keyboards. Is there any way I can solve this problem? O/S is FreeBSD 9.0 RC1 amd64. (I would leave this till running the final production version except that the other Cherry keyboard would work with the laptop running exact same O/S). In case it matters, the motherboard is a Abit - not sure of exact model but it is 2 or 3 years old. Thanks Paul ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to freebsd-usb-unsubscr...@freebsd.org
Re: cherry keyboard issue
Paul Douglas wrote: I recently posted a query on the peripheral hardware forum about a problem It's not always software at fault ... Did you measure the current each keyboard uses ? They do vary a lot. The PS2 mini keyboard I'm using uses 46 mA, other PS2 full sizers on shelf here pull 63 70 83, another mini PS2 here pulls 88 mA, one PS2 I recall pulled 150 or so was troublesome on some PCs so I dumped it. Then add whatever a USB to PS2 converter draws. I havent measued what my one USB2 keyboard drawa. Or my USB to PS2 or PS2 to USB converters. I went through various other kit wrote cconsumption under devices. USB-2 is spec'd at 0.5 Amp, but I suspect some sockets (on PCs hubs) dont deliver enough some devs (disks) obviously draw 0.7+ need doubler cables. Keyboards shouldnt be near 0.5A but conside dried out electolytic capacitors on USB power supplies etc. Certainly seen that on hubs transformer (for USB ethernet) Cheers, Julian -- Julian Stacey, BSD Unix Linux C Sys Eng Consultants Munich http://berklix.com Reply below not above, cumulative like a play script, indent with . Format: Plain text. Not HTML, multipart/alternative, base64, quoted-printable. ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to freebsd-usb-unsubscr...@freebsd.org
