kernel 2.6.13, USB keyboard and X.org

kernel 2.6.13, USB keyboard and X.org

[Piter Punk]

Hi,

	i am using 2.6.13 in some machines. One of them has a USB keyboard.
My first problem: the keyboard simply doesn't works. I put "usb-handoff" in
prompt and all goes OK.

	But, when i start X i got a second problem, is impossible to type
only one letter, one touch in a key makes a lot of letters, like that:

	lllllliiiiiiinnnnnnnnuuuuxxxxx

	instead

	linux

	The problem don't happens in kernel 2.4.31 (2.4.31 recognizes
the keyboard without usb-handoff, and works great in X).

	Using 2.6.13, i try to configure X and change the "Autorepeat"
option. The default is to wait 500ms before start to repeat. I think
something is wrong and configure to wait 5000ms (5s) before start to
repeat the letters. In X nothing happens, i continue to type:
llllllliiiiiinnnnnnuuuuuuxxxxx

	But, when i stop the X, the console keyboard got really
slow and start to repeat one letter only after i press the key by
five seconds. Following my X configuration.

	I don't know if the bug is in kernel 2.6.13 or in X, because
that i am sending the report to both lists. In kernel 2.4.31 the X
works OK and, in 2.6.13 the console works OK, problem only in X.

	If you want more information, let me know.

								Piter PUNK

Re: kernel 2.6.13, USB keyboard and X.org

[Carlo J. Calica]

Piter Punk wrote:

> But, when i start X i got a second problem, is impossible to type
> only one letter, one touch in a key makes a lot of letters, like that:
> 
> lllllliiiiiiinnnnnnnnuuuuxxxxx
> 
> instead
> 
> linux
> 

I have the same problem, with my dual core athlon64.  Booting a uniprocessor
kernel solves it.  Another work around is turning off key repeat.

Best solution is setting processor affinity for the keyboard irq handler and
X to the same cpu.  Seems to be a race condition of some sort.  If a X
developer wants to work with me to debug contact me at
ccalica_at_gmail.com.  I'm using gmane to access the list (occasionally).

Good luck.

Carlo J. Calica

Re: kernel 2.6.13, USB keyboard and X.org

[Frank van Maarseveen]

On Sat, Sep 24, 2005 at 05:04:17PM -0700, Carlo J. Calica wrote:
> Piter Punk wrote:
> 
> > But, when i start X i got a second problem, is impossible to type
> > only one letter, one touch in a key makes a lot of letters, like that:
> > 
> > lllllliiiiiiinnnnnnnnuuuuxxxxx
> > 
> > instead
> > 
> > linux
> > 
> 
> I have the same problem, with my dual core athlon64.  Booting a uniprocessor
> kernel solves it.  Another work around is turning off key repeat.
> 
> Best solution is setting processor affinity for the keyboard irq handler and
> X to the same cpu.  Seems to be a race condition of some sort.  If a X

You just might be hitting a TSC related problem, see bug #5105 at
bugzilla.kernel.org. In that case you will probably see funny timings
when doing an strace -tt of the xclock program, for example.

A workaround for i386 kernels is "clock=pit" on the kernel commandline.
In x86_64 mode, try "notsc" instead. Well, try that anyway but it didn't
work in my case.

-- 
Frank