Thursday, 27 February 2014

Re: Aiming for Qemu 2.0 in 14.04

Quoting Jason DeRose ([email protected]):
> Serge,
>
> I gave 2.0 a quick spin with the internal tools System76 uses for golden image mastering. I tested using the latest Trusty desktop daily as the guest.
>
> I found one possible regression compared to qemu 1.7 that I need to investigate further. Sometimes when using "-vga std", the resulting Gtk window seems to be at half-resolution, even though the guest was given the correct resolution (ie, the Gtk window is scaled at 1:2 by default, rather than being 1:1 by default). I haven't found a reliable way to reproduce this yet, but next time it happens, I'll be sure to take a screenshot and file a bug.

Thanks, Jason. Much appreciated.

I was testing some nesting issues today so was using server images, but
I will try out desktop images and see how that treats me.

> But overall qemu 2.0 seems solid. Some off-the-beaten-path options I tested:
>
> * "-bios /usr/share/ovmf/OVMF.fd" - in addition to doing a BIOS mode install, I also did a UEFI[1] install, which seems to work the same as it does under qemu 1.7
>
> * "-vga qxl" - QXL is still a bit flaky with qemu 2.0 (rendering errors with the cursor especially), but it seems much more usable than QXL is with qemu 1.7
>
> Thanks for making this PPA available! Hopefully qemu 2.0 can be landed in Trusty!
>
> -Jason
>
> [1] UEFI doesn't work with a Saucy host, but does work with a Trusty host, I believe thanks to the newer ovmf (edk2) in Trusty; likewise, UEFI doesn't work with a Saucy guest, although I'm not sure why this is; in summary, Trusty host + Trusty guest is the only working combination I've found
>
>
> ----- Original Message -----
> From: "Serge Hallyn" <[email protected]>
> To: [email protected], [email protected]
> Sent: Wednesday, February 26, 2014 11:40:32 AM
> Subject: Aiming for Qemu 2.0 in 14.04
>
> Hi,
>
> as shown https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1284793
> we are hoping to get Qemu 2.0 into 14.04. This is tricky due to
> the timing - Qemu 2.0 release is scheduled for April 4
> ( http://wiki.qemu.org/Planning/2.0 ), with freeze for 14.04 being
> April 10. However, the drastic reduction in patches carried in
> the package, given the length of the LTS cycle, would be worthwhile.
>
> In an attempt to shake out bugs as early as possible, I've started
> building packages based on current git HEAD at ppa:ubuntu-virt/candidate.
> This seems to be testing quite well for me on amd64. It would be
> great if people could start testing the version in this ppa where
> possible, as early as possible.
>
> If we do run into bugs, we can hopefully get them fixed upstream before
> release. If we can't get them fixed, then we'll know to stick with the
> 1.7 based qemu for 14.04.
>
> thanks,
> -serge
>
> PS:
> The version in this ppa also drops the omap3 patches cherrypicked
> from qemu-linaro. If anyone finds they needed those, please let
> me know so we can discuss how to proceed.
>
>
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