lkml.org 
[lkml]   [1999]   [Oct]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: IDE + SMP Lockup (no OOPS) in 2.2.12, 2.2.10
Date
Rogier Wolff wrote:

> Ok, sure, of course. I know that. However as 99% of the users won't be
> reading enough manuals to do the hdparm -u1, it is still neccesary to
> find out why the 128-byte-fifo-uart is losing characters, while the
> standard 16-byte-fifo-uart isn't.
>
> Turns out the trigger level on the new UART was set at 112. That's 16
> before the end. Reducing the trigger level 32, fixed a lot, but still
> I was able to overrun the new uart at 19k2, while I couldn't overflow
> the 16550 at 115k2.

Hi,

Something related:

Since I've switched to 2.2.x from 2.0.36 I see serial overruns
on my modem-link (something like every minute during a download).
Yes, I know about "hdparm -u1" ..

Same hardware, same config, same software. Only different kernel.
I have *never* seen any overrun with 2.0.x.
It happens on a Cyrix 486 DX2/66 and not on an Intel 486/33.
I have never been able to trace the problem. It's weird.

I can dig up detailed bug-reports I sent to linux-kernel some
time ago (never got any response) in case anyone is interested.

greetings,
Rob van Nieuwkerk

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

\
 
 \ /
  Last update: 2005-03-22 13:54    [W:0.122 / U:0.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site