Kubuntu/Ubuntu does not remove everything from memory at shutdown

[Howard Coles Jr.]

On Wednesday 10 March 2010 03:48:35 pm Mark Greenwood wrote:
> 
> Yes that's exactly what I'm suggesting. Those suggesting this is a Windows
> problem have missed the point and failed to understand the problem. The
> problem is that Kubuntu does not correctly shut down and clear
> memory/microcode/ACPI on a warm reboot. If the system has not been
> properly shut down then it is not the next OS's problem if hardware does
> not initialise correctly.
> 
> Mark
> 

Here's the deal.  The BIOS clears and initializes the hardware to a certain 
point upon boot up, and when the control is handed over to the OS after the 
bootstrap is loaded, it's up to the starting OS to initialize, and load the 
drivers for all detected devices.  Blaming Kubuntu because Windoze doesn't 
load right has got to be the craziest thing I've heard around here in a LONG 
time.

Here's a point you don't get as well:  If you're "warm booting", you're by 
nature NOT clearing all the code in all the adapters at the OS level, you're 
just clearing and writing out the Hard Drive cache, killing all the apps 
running, and kicking off a quick reboot via ACPI.  It's up to the BIOS of the 
box, or the next OS startup at that point to reset all cards and memory.  That 
kind of completely empty RAM and all other add-on cards would be a complete 
cold boot, right?  Warm booting means I don't take the time to completely 
clear and shut down the hardware, I just do a "refresh" boot, hence the name 
"warm".

I've been using Kubuntu for years now, and there have been times when I've had 
to do a cold boot because drivers didn't load successfully, but I've never (on 
many machines) heard of blaming OS3 because OS2 and/or OS1 didn't do their 
shut down right.  I've always blamed the OS that was booting up for not 
loading drivers or initializing cards.  I've also had to do full power off 
reboots because warm boots don't completely empty RAM/microcode, etc on 
different OSes (Linux, NetWare, OS/2, and Windows) so this is nothing new.  
Sometimes to get new microcode/updates to load, or fully update drivers, you 
had to do a full cold power off reboot, I just haven't run into that in a long 
while.

-- 
See Ya'
Howard Coles Jr.
John 3:16!