[Bug 1756538] Re: Minimal Ubuntu vs. Debian differences

[Thomas Huth]

The QEMU project is currently considering to move its bug tracking to another 
system. For this we need to know which bugs are still valid and which could be 
closed already. Thus we are setting older bugs to "Incomplete" now.
If you still think this bug report here is valid, then please switch the state 
back to "New" within the next 60 days, otherwise this report will be marked as 
"Expired". Or mark it as "Fix Released" if the problem has been solved with a 
newer version of QEMU already. Thank you and sorry for the inconvenience.

** Changed in: qemu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1756538

Title:
  Minimal Ubuntu vs. Debian differences

Status in QEMU:
  Incomplete

Bug description:
  I'm using Qemu on Ubuntu (minimal) and Debian (minimal) on Android
  (Arch64) via Linux Deploy to run Windows guests. Here's a few issues I
  encountered:

  1) Qemu on (minimal) Debian 9 and Ubuntu cannot run Windows 7-10
  guests (only Windows XP and below) because there's a black screen
  after the boot menu. Qemu on Debian 10, however, can run Windows 7.
  Incidentally, these distros run on the host in bios compatibility mode
  instead of UEFI. Ubuntu Desktop (full distro) on other hosts does not
  display the black screen when running Qemu.

  2) Qemu on Debian 9-10 (minimal) does not display fullscreen - but
  Ubuntu minimal does display full-screen.

  3) Qemu on Limbo PC Emulator and on Debian 9-10 only run windows
  guests at 1 GHz using the default Qemu CPU, but Ubuntu runs windows
  guests at 2 GHz using the default Qemu CPU.

  4) Enable KVM doesn't work, and virtualization isn't detected through
  Limbo PC Emulator and minimal Linux distros running on Android -
  perhaps is a problem with running Linux distros via Linux Deploy using
  Chroot on Android (not so much a Qemu-KVM issue) and failing to detect
  ARMv8-A CPUs that are indeed capable of virtualization.

  Can anyone explain these differences? I believe they are all using the
  latest versions of Qemu.

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