Bug 45767 - 'reboot' causes linux fails to boot
'reboot' causes linux fails to boot
Product: Red Hat Linux
Classification: Retired
Component: usermode (Show other bugs)
i586 Linux
medium Severity medium
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Assigned To: Jindrich Novy
David Lawrence
Depends On:
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Reported: 2001-06-25 04:30 EDT by Need Real Name
Modified: 2013-07-02 18:55 EDT (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-09-16 07:30:45 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Need Real Name 2001-06-25 04:30:30 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0)

Description of problem:
When I use "reboot" to restart my RedHat 7.1 (on Compaq Presario 1266, 
NeoMagic 128 XD (MM2160)), the system restarts, and starts loading kernel, 
then I see some funky color characters on screen, then the boot seems 
stopped, system is hang and I have to use "Power Off" button to restart 
However, if the system is bootup from power on I never see this problem. 
It seems to me that "reboot" does not cleanup something (which I don't 

How reproducible:

Steps to Reproduce:
1. boot up Linux system (RedHat 7.1)
2. Logon as "root" and type "reboot"
3. After system reboot and LILO, system hangs after "Loading kernel..." 
with random garbage color characters on screen.

Actual Results:  It happened again.

Additional info:
Comment 1 Need Real Name 2001-06-25 04:39:54 EDT
Note: "reboot" worked perfectly when I used RedHat 6.x and 7.0
Comment 2 Need Real Name 2001-06-25 19:30:24 EDT
More info:
"reboot" sometimes causes "LILO" string does not display completely. This is 
kind of random, so far I saw these cases:
" ILO"
"  LO"
"L LO" (the first 'L' is in green).
But they all hang when system tries to load kernel.

If I use 
"vga=788", then the system loads the kernel, but fails/hangs later, one time 
was when it detects USB devices, the other one is when it's about to mount 

If I choose "Windoze 98" (dual-boot) from the problematic LILO, the system 
seems recovered for Windoze 98SE.
Comment 3 Mike A. Harris 2001-08-28 12:32:19 EDT
This bug report sounds like it has absolutely nothing to do with the
usermode package whatsoever.  It sounds more like a kernel problem,
or more likely really broken hardware or misconfigured BIOS or bad
RAM or something.

Arjan, your thoughts?
Comment 4 Jindrich Novy 2004-09-16 07:30:45 EDT
Hmmm, looks weird but I agree with Mike that it's not a fault of
reboot. It's very hard for me to reproduce the problem and it seems to
me that this issue is pretty hardware specific. If something like this
happens again to you with a recent release and can be reproduced,
please report it again. Thanks,


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