Bug#623594: system freeze during boot with IOMMMU enabled
Package: Debian-testing-amd64-DC-1.iso (latest version converted to boot
Platform: x86_64 Linux (also .386/i686)
Description of problem:
Since I updated the firmware of my BIOS to a revision that supports AMD
IOMMU and turned that feature on, pretty much anything that runs Linux
fails to boot All I see about half a second after I pass the GRUB
bootloader is a blinking cursor in the upper left corner. The mouse gets
disabled (i.e. powered off in spite of being plugged in) and the
keyboard doesn't even respond to caps-lock, num-lock and scroll-lock
toggles (numlock light is constantly on).
I assume that it is needless to say that this is a non-issue when the
IOMMU feature is disabled.
This happens to any (x86_64) Linux based LiveCD I have tested so far:
lubuntu 10.4, ubuntu 10.10, Fedora 14, Fedora 15 beta, FreeBSD 8 (is not
Linux but...) and latest Debian Live.
I used the liveUSB in most of these attempts and it has a LED light that
just shuts off in the middle of the boot process when the freeze happens.
I don't have this problem with Windows 7 64 bit, XenServer (Install CD
with Linux tools as well as installed partition) and FreeDOS/MS-DOS
based boot CDs.
Version-Release number of selected component (if applicable):
kernel 2.6.32.X and 2.6.35.X ... ???
On my system; very. The failure rate is 100%.
Steps to Reproduce:
1. Use a computer with MSI 890FXA-GD70 and BIOS version 1.9 with IOMMU
enabled in the Advanced BIOS feature menu, XFX ATI5450 GPU, Intel Server
NIC (Copper), a DVD drive and two large harddrives.
2. Insert a Linux liveCD or liveUSB
Immediate crash with no info about it and all peripherals except the
display seemingly severed.
I also get this problem with i386/i686 based liveCD/USBs, but in this
case the screen displays error messages. Here's a list of error messages
from the Fedora 15 beta liveCD:
These are the last error message lines shown on the screen before the crash.
The mouse and the USB stick is not "powered off" as in the x86_64 cases
but the keyboard is irresponsive as in the prior cases.
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