Public bug reported:
Ubuntu Desktop i386 8.10 Alpha Intrepid Ibex will not install on a Via
PD6000E motherboard. When "Install Ubuntu" is selected from the
graphical installer, the following error message is displayed:
"This kernel requires the following features not present on the CPU: cmov
Unable to boot - please use a kernel appropriate for your CPU."
The processor is a VIA C3 Eden, commonly used on mobile and embedded
boards (low power) and entertainment systems (e.g. MythTV boxes).
According what I have been able to find out, the cmov instruction is an
optional i686 instruction (i.e. is not required to be present for the
CPU to be an I686), *not* an i386 instruction. The C3 does not implement
this optional instruction. The same computer is currently running the
Ubuntu server install for kernel : "Linux version 2.6.24-16-generic
([EMAIL PROTECTED]) (gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7)) #1 SMP Thu
Apr 10 13:23:42 UTC 2008" with no problems.
Since the Ubuntu ISO claims to be for i386 "intrepid-desktop-i386.iso",
optional i686 instructions should not be relevant. Also, the description
on the Ubuntu download page for this release says: "For almost all PCs.
This includes most machines with Intel/AMD/etc type processors and
almost all computers that run Microsoft Windows, as well as newer Apple
Macintosh systems based on Intel processors. Choose this if you are at
all unsure". According to this criteria, requiring "cmov" would be a
bug.
This bug may have appeared several years ago in 59338, but that bug
report isn't entirely clear on whether that was the actual original
problem.
** Affects: ubuntu
Importance: Undecided
Status: New
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Ubuntu 8.10 Alpha-3 Intrepid Ibex - Via C3 CPU not Supported
https://bugs.launchpad.net/bugs/254453
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