Public bug reported:
First my system setup :
Motherboard : ASUS A7N8X-E Deluxe
Chipset : nForce2 Ultra 400
Processor : AMD Athlon XP 2600+
Memory : 1.5GB, Super Talent
Installed cards : Nvidia NV17GL aka Quadro4 550 XGL -- Manufacturer : PNY
No internal hard drives
1 external 500GB Acomdata USB/1394a external hard drive -- E5 HybridDrive :
HD500UHE5-72
1 CD-R/RW drive : HL-DT-ST CD-RW GCE-8481B
1 DVD-ROM drive : PIONEER DVD-ROM DVD-120
1 floppy drive
Yesterday, I attempted to test the ACPI power saving modes available on
my system. After entering super-user mode and entering the commands 'cd
/sys/power; echo -n "standby" > state' my machine proceeded to enter
some kind of strange, non-functional "standby" mode wherein all the
peripherals, devices, cards, and fans remained unaffected -- all that
happened, from my perspective, was the OS locking up with the display
still on and unchanged and the system power LED proceeding to blink. I
attempted to restore my machine to a functional state by pressing the
power button, as is the normal procedure when one's system indicates it
is in standby by causing the power LED to blink. This stopped the LED
from blinking, but failed to un-lock the OS. I was able to enter the
RSEIUB key sequence though, upon which I caused a successful reboot.
When my system entered the stage wherein the BIOS would normally check
for a bootable USB mass storage device and boot off said device, my
system instead entered the PXE boot process which eventually failed with
the proverbial "INVALID SYSTEM DISK OR DISK ERROR". After this, I booted
off the Kubuntu install CD from which i performed a filesystem check on
the external USB drive. No errors were reported, so I reinstalled GRUB
for kicks, rebooted, and lo and behold everything was fine again.
My operating system information follows :
OS : Kubuntu 8.04 Linux
Kernel : ( uname -a ) jdb2-Kubuntu-temp 2.6.24-19-generic #1 SMP Wed Aug
20 22:56:21 UTC 2008 i686 GNU/Linux
"lsb_release -rd" output :
Description: Ubuntu 8.04.1
Release: 8.04
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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Attempting to enter standby in Kubuntu 8.04 on an nforce2 motherboard and with
the OS installed on an externel USB hard drive results in system lock-up and
subsequent failure to boot from external USB hard drive
https://bugs.launchpad.net/bugs/269162
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