On Thu, Sep 23, 2010 at 07:03:11PM +0200, Raphaël Droz wrote: > Hi, > I recently bought a (used) keyboard > (http://www.microsoft.com/hardware/systembuilders/ProductDetails.aspx?pid=036) > to connect it to my old eeepc 701 > I also have a USB hub > (http://www.topproduct.nl/hardware/hubs/12935-typhoon/97140-typhoon-usb-hub-2.0/302335-typhoon-usb-hub-2.0-83045.html) > > In Grub: > - keyboard connected to the eeepc: working smoothly > - keyboard connected to the hub: working, with some latency > > After init/udev: > - keyboard connected to the eeepc: not working > - keyboard connected to the hub: working smoothly > > At the beginning I believed I had some problem with the eeepc usb > voltage, but ... _in_grub_it_works_ > I used udevd --debug, but it shows absolutely nothing when the keyboard > is directly plugged. > [ I attached a trace of the keyboard being hub-plugged and detected by > udev; the modalias and its quirks *may* be the thing to look at ] > > So, I guess, it has nothing to do with the bios, nor X/evdev/xinput, nor the > hardware. > > I wanted to trace kernel device events but I don't really know which of > $(grep TRACE /boot/config-2.6.32-trunk-686) > should be used (and activated in the stock Sid kernel as I wish to avoid > a recompilation if possible as my HD space is dramatically low) > > Finally I tried usbmon and, hope and surprise, I found something being > logged while the keyboard is directly plugged. > I used http://ns.spinics.net/lists/linux-usb/msg23537.html > (parse_usbmon.sh) [no wireshark, HD space ...] > but no much luck with it. When a direct connection happens usbmon just > say "usb port is alive", and nothing happens on successive keypresses. > > I also made some attempts of module manual loadings like I saw in udev log > (like modprobe -b input:xxx...) but no success so far. > > Attached are the usbmon sessions (raw and parsed) for {direct,hub} > connections. > A udevd --debug log of a hub connection + lspci and lsusb. > > Any advice warmly welcomed > > (sorry for the noise of the previous 'Unidentified subject!' message: > attachment + email was a bit over 100k, thus the gzipped udevd.log here) > > Raphaël
I still can not understand that a keyboard can work like a charm in the bios/grub (the receiver flickers as I type) but not after init (the receiver led stays desesperately off whatever module I load). so just ping'ing as I'm still out of ideas and I would really like to solve this problem but I do not want to disturb kernel-related mailing-lists. any hint ? Raph -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20101119193552.ga2...@deeebian
