Re: horrible usb keyboard bug with latest tests

From: Alberto Bertogli (albertogli_at_telpin.com.ar)
Date: 09/12/03

  • Next message: Jeff Garzik: "Re: [BK PATCH] One strdup() to rule them all" 
    Date:	Fri, 12 Sep 2003 00:06:14 -0300
To: Andries Brouwer <aebr@win.tue.nl>

    On Thu, Sep 11, 2003 at 11:38:23PM +0200, Andries Brouwer wrote:
    > On Thu, Sep 11, 2003 at 03:46:08PM +0200, Gábor Lénárt wrote:
    > > On Thu, Sep 11, 2003 at 05:57:44AM -0700, Mr. Mailing List wrote:
    > > > Ok, for the last few test kernels, there is a horribly
    > > > annoying usb keyboard bug. after a while in X, or
    > > > just when you start putting some input, all the
    > > > keyboard lights on on my msnatpro keyboard. after
    > > > that, the keycodes are screwed up(like the left alt
    > > > button)
    > > >
    > > > sometimes one key would stick, like
    > > > kkkkkkkkkkkkkkkkkkkkkkkkkk
    > >
    > > For me too, even with a normal keyboard attached to the PS/2 keyboard port.
    > > In my case it's very rare, and not a 'constant stick' but short 'pulse' of
    > > the same character like displaying 'kkkkkkkkk' in my terminal even if I'm
    > > sure that I didn't forget my finger on the key. OK, it's not a showstopper
    > > bug, but sometimes annoying. It's 2.6.0-test3 (vanilla).
    >
    > Yes, I see this too, but very infrequently.
    >
    > For the 2.6 kernels key repeat is not taken from the keyboard but is
    > done via a kernel timer, and clearly the code is not quite correct.
    > I have not yet been able to detect it before I already
    > had hit the next key but maybe somebody else can answer:

    I hit it too on a PS/2 Siemens keyboard, but surprisingly I could only
    verify it with both windows keys on the right side of the keyboard (the
    ones between altgr and ctrl). It has never happened with a 'regular' key.

    It's not very frequent but I get it about once per day or so.

    I use those keys to switch consoles, instead of using
    alt + [left|right] arrow; and sometimes one gets stucked and scrolls the
    consoles around until I press another key.

    I'm pretty sure it's not the keyboard as it never happened in 2.4, and
    it's been happening since 2.5.5X or .6X IIRC (in fact I think I posted
    something about it).

    > When does this repeat stop?
    > Does it stop because the next key has been hit?

    Yes, it stops on any keypress or, if I'm running X, when it hits the X
    console.

    > And: does it occur more often when the machine has high load?

    I have no idea, I really never thought about it but I'll put load and see
    what I can find.

    Do you mean cpu load or some more complex vm load? (ie. I should "while
    true; do true ; done" or "make -j bzImage" =)

    Please let me know of anything else I can help you with.

    Thanks,
                    Alberto

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

  • Next message: Jeff Garzik: "Re: [BK PATCH] One strdup() to rule them all"

    Relevant Pages

    • Osborne 1 Problem
      ... Pulled out my old model one today, and it is not recognizing the keyboard. ... (when prompted to hit enter to load, ...
      (comp.os.cpm)
    • Re: Nominations (4) -> Re: Several ways you can delete a large avi file, and other files that mig
      ... >in the older MSDOS versions that the geeks liked to load up? ... somewhere in the keyboard routines. ... >old text adventure games using the hex disk editor (and writing down the ...
      (alt.computer.security)
    • 2. Keyboard under X
      ... I want that an additional keyboard to the laptop is _not_ recognized ... Identifier "XFree86 Configured" ... Load "GLcore" ... Driver "keyboard" ...
      (Debian-User)
    • Re: French-Canadian Keyboard & keyboard switching
      ... it also uses French messages which are a bit tortured ... Keyboard settings shouldn't affect message localisation. ... Load "extmod" ... If you don't need layout switching just delete this. ...
      (freebsd-questions)
    • Re: Stuck on run-level 3 :-(
      ... Load "extmod" ... # Specify which keyboard LEDs can be user-controlled ... Identifier "Keyboard0" ... VendorName "Monitor Vendor" ...
      (Fedora)