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graphic: 0.984
device: 0.899
other: 0.854
semantic: 0.828
boot: 0.810
instruction: 0.719
mistranslation: 0.672
assembly: 0.422
vnc: 0.391
socket: 0.247
network: 0.196
KVM: 0.058
Old amd64 Ubuntu won't start
Description of problem:
While taking a trip down memory lane, I noticed that old Ubuntu amd64 live CDs won't boot in qemu-system-x86_64, while i386 ones work fine. I can confirm this for 6.06 and prior releases, while 8.04 and forward are OK (I don't have interim releases isos).
Steps to reproduce:
1. Launch qemu-system-x86_64 with Ubuntu 6.06.1 amd64 live CD
2. Press "Start or install Ubuntu"
3. PANIC: early exception rip (etc, please see screenshot below)
Additional information:
I tried a few versions of QEMU and I can tell you that everything worked fine in 7.0.0 and it first broke in 7.1.0. I don't have a more precise bisect, sorry. I also tried in Fedora 40 with QEMU 8.2.2 and I have the same issue, so I don't think it's distro related.
On the other hand, on a completely different PC with an Intel Core i3-330M I have no issue at all, even with QEMU 8.2.3, so it might be AMD/Ryzen related.
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