[Bug 328] New: The computer seems to hang after the kernel has uncompressed and starts to boot.

[Bug 328] New: The computer seems to hang after the kernel has uncompressed and starts to boot.

[Martin J. Bligh]

http://bugme.osdl.org/show_bug.cgi?id=328

           Summary: The computer seems to hang after the kernel has
                    uncompressed and starts to boot.
    Kernel Version: 2.5.59
            Status: NEW
          Severity: normal
             Owner: bugme-janitors@lists.osdl.org
         Submitter: di00enad@ing.hj.se


Distribution: RedHat 8.0
Hardware Environment: Acer Aspire 1300 laptop
Software Environment: RedHat 8.0, GCC 3.2, LILO
Problem Description: When I have compiled the kernel without problems and 
restart the computer the only two lines that are printed are:

Booting 2.5.59
Uncompressing the kernel, Ok booting the kernel

then there is no more text printed out and the keyboard do not work. But I
can  see some activity on the harddisk for about 10 seconds. When I reset
the  computer fsck is run because the disk was not cleanly unmounted. It
seems like  the system can almost boot but I can't see anything on the
screen.

Re: [Bug 328] New: The computer seems to hang after the kernel has uncompressed and starts to boot.

[Thomas Molina]

On Sat, 8 Feb 2003, Martin J. Bligh wrote:

> 
> http://bugme.osdl.org/show_bug.cgi?id=328
> 
>            Summary: The computer seems to hang after the kernel has
>                     uncompressed and starts to boot.
>     Kernel Version: 2.5.59
>             Status: NEW
>           Severity: normal
>              Owner: bugme-janitors@lists.osdl.org
>          Submitter: di00enad@ing.hj.se
> 
> 
> Distribution: RedHat 8.0
> Hardware Environment: Acer Aspire 1300 laptop
> Software Environment: RedHat 8.0, GCC 3.2, LILO
> Problem Description: When I have compiled the kernel without problems and 
> restart the computer the only two lines that are printed are:
> 
> Booting 2.5.59
> Uncompressing the kernel, Ok booting the kernel
> 
> then there is no more text printed out and the keyboard do not work. But I
> can  see some activity on the harddisk for about 10 seconds. When I reset
> the  computer fsck is run because the disk was not cleanly unmounted. It
> seems like  the system can almost boot but I can't see anything on the
> screen.

I began to see this bug this weekend myself.  I'm not sure of the cause, 
but it can be worked around by configuring the kernel for built-in (not 
modular) support of virtual terminals (CONFIG_VT) and support for console 
on virtual terminals (CONFIG_VT_CONSOLE).  

Re: [Bug 328] New: The computer seems to hang after the kernel has uncompressed and starts to boot.

[Andries Brouwer]

On Sat, Feb 08, 2003 at 03:00:43PM -0600, Thomas Molina wrote:

> I began to see this bug this weekend myself.  I'm not sure of the cause, 
> but it can be worked around by configuring the kernel for built-in (not 
> modular) support of virtual terminals (CONFIG_VT) and support for console 
> on virtual terminals (CONFIG_VT_CONSOLE).  

Maybe unrelated, but there is some really ugly code in
char_dev.c:get_chrfops().

There, if one needs a character device that is not present
a request_module("char-major-%d") is done.
However, if the character device has TTY_MAJOR or TTYAUX_MAJOR
and a driver for this major is requested, and we already have
one, but it is the wrong one, then we also do the request_module.
Yecch.

The reason is of course that entirely different drivers cover
different fragments of the major space (4,1 is /dev/tty1 and
4,65 is /dev/ttyS1)

So, I could imagine that if one has neither module, and needs
one, get_chrfops() loads the wrong one. Speculation.

Andries