Re: keyboard-PS2 mouse related lockups in SMP 2.0.30 & 2.1.37

Tomasz Motylewski (motyl@ipl.net)
Thu, 22 May 1997 01:29:44 +0200 (MET DST)


-----BEGIN PGP SIGNED MESSAGE-----

On Wed, 21 May 1997, Tomasz Motylewski wrote:

> BUG: pressing CapsLock or ScrollLock(tested less) while moving the PS/2 mouse
> causes TOTAL FREEZE (interrupts masked) lasting _exactly_ 10 seconds.
>
> I have tested that in 2.0.30, 2.0.pre31, 2.0.pre31+ recommended patches,
> 2.1.pre37-4, 2.1.37. I could not get it on non-SMP kernel.

More info:

It is still there in 2.1.39.
It is not related to the mouse - the key factor is "terminal activity".
Moving the mouse is just one possible way of getting this.
I was able to get it when I was hitting for several minutes Caps-Lock, while
running
yes "Linux 2.1.39" on VT + some compilation.

Is is much more efficient in Xwindows - running "yes" in an Xterm and hitting
CapsLock several times.

The freeze always takes 10 s. Even after I have changed HZ from 100 to 160
and recompiled 2.1.39.

I did not write, that I am using Matrox Millenium 4 MB graphics adapter.

For complete information, I am using "gpm -t PS/2 -R" .

Hope that helps.
- --
Tomasz Motylewski

-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv

iQCVAwUBM4OFKUk05k466f3dAQEftwQAj+WQyYYgfEYGnnUexjy1BXA2RrElCHTM
fTvgtn+03cqTpyQB2gvRURfXabEiw/7ppBJMyPOxQe3SEW7Jj0ZhgEUBQ9LLDldJ
XCqNb/TJVytPXU389H4HjognYVX39FdMHH4j6IRoYx5mL3V5Hrl4Jy+vTZhUZWaS
LbllY1aAIwk=
=Rl6R
-----END PGP SIGNATURE-----