[Bug 897786] Re: Kernel is dropping non-PAE flavour

[Chris Bainbridge]

floid (jkanowitz) wrote:

> Does this go for Banias as well as Dothan Pentium Ms?

I have Dothan, it does not advertise PAE in cpuflags, but PAE kernel
works.

> the NX support that this is supposed to really be about came in with
Dothan (which I assume will report under cpuflags in all
circumstances?).

No, my Dothan Pentium M (Family 6 model 13 with 400mhz bus) does not
have PAE or NX in cpuflags.

NX is supported via kernel patch (see https://lists.ubuntu.com/archives
/ubuntu-devel/2011-November/034502.html Dropping i386 non-PAE as a
supported kernel flavour in Precise Pangolin - "This is about dropping
non-PAE support, not dropping non-NX support. The NX emulation patch
must remain in the kernel since a large number of systems have PAE but
not NX.")

> (Does Fedora do something more sane here?)

Fedora supports i686 kernels without PAE. The installer chooses to
install a PAE kernel (or not) based on CPU and memory config - PAE
capable systems with <4GB will get non-PAE kernel, as it is slightly
faster and all memory is usable.

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https://bugs.launchpad.net/bugs/897786

Title:
  Kernel is dropping non-PAE flavour

Status in Ubuntu CD image build software:
  Fix Released
Status in “base-installer” package in Ubuntu:
  Invalid
Status in “debian-installer” package in Ubuntu:
  Fix Released
Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux-meta” package in Ubuntu:
  Fix Released
Status in “live-build” package in Ubuntu:
  Fix Released
Status in “base-installer” source package in Precise:
  Invalid
Status in “debian-installer” source package in Precise:
  Fix Released
Status in “linux” source package in Precise:
  Won't Fix
Status in “linux-meta” source package in Precise:
  Fix Released
Status in “live-build” source package in Precise:
  Fix Released
Status in “base-installer” source package in Quantal:
  Invalid
Status in “debian-installer” source package in Quantal:
  Fix Released
Status in “linux” source package in Quantal:
  Fix Released
Status in “linux-meta” source package in Quantal:
  Fix Released
Status in “live-build” source package in Quantal:
  Invalid

Bug description:
  Dropping the non-PAE ia32 kernel flavour has knock-on effects for
  installers.

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