Re: i8253 count too high - how to fix in 2.4.xx kernel
I 'solved' the problem by removing the message from the linux kernel source
and
compiling it again then installing the new kernel. No more messages!
You *NEED* to have the kernel source on your virtual machine to do this.
On 2.4.x kernel sources (assuming your linux sources is at /usr/src/linux)
the
file that needs editing is time.c found like this...
root@dana2:/root$ cd /usr/src/
root@myserver:/usr/src$ grep "i8253 count too high! resetting.." *
which outputs:
grep: Documentation: Is a directory
grep: arch: Is a directory
grep: crypto: Is a directory
grep: drivers: Is a directory
grep: fs: Is a directory
grep: include: Is a directory
grep: init: Is a directory
grep: ipc: Is a directory
grep: kernel: Is a directory
grep: lib: Is a directory
grep: mm: Is a directory
grep: net: Is a directory
grep: scripts: Is a directory
arch/i386/kernel/time.c: "i8253 count too
high! resetting..\n");
Go edit this time.c file and it is the two lines 690/691 (for 2.4.27
anyway). At comment
markers around the two lines then save and build a new kernel and install.
time.c lines 690 & 691
-------------------------------
/* printk(KERN_WARNING
"i8253 count too high! resetting..\n"); */
The line numbers may or may not be the same for other 2.4.xx kernels but it
will be the
same file.
Regards
...Petar
"Ben Armstrong [MSFT]" <
benarm@online.microsoft.com> wrote in message
news:uCqV10exEHA.3096@tk2msftngp13.phx.gbl...
> The i8253 chip is part of the timing mechanism inside of a computer -
> now - it happens that inside of virtual machines (and on a number of
> physical laptops) time will go backwards by small amounts every now and
> then. Most operating systems have code to support such perturbations -
> including Linux. But for some reason in kernels 2.4.20 and later - they
> decided to print out a debug message whenever this happens. This has
> caused a lot of confusion for laptop users - but this message can be
> ignored.
> --
> Cheers,
> Benjamin Armstrong
> ===============================
> Virtual machine Program Manager
>
> This posting is provided "AS IS" with no warranties, and confers no
rights.[vbcol=seagreen]
> You assume all risk for your use.
>
> Chris wrote:
大致意思是说：
对于部分计算机（物理的）和虚拟机，其i8253芯片（一块可编程计数器）会不断的 复位 『回到之前的设置』 （go backwards），这个故障是无关紧要的，可以通过重新编译内核来解决。
文中以2.4.27的内核为例，通过修改源代码的time.c（arch/i386/kernel/time.c）文件的
690/691行(不同版本的位置不同,但文件相同)解决,文中将
printk(KERN_WARNING"i8253 count too high! resetting..\n");
一句加上了注释,解决了这个问题,(当然要重新编译一下内核).
我用的是dsl,没有源代码,郁闷啊!~
