Comment 1 for bug 1752761

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Christian Ehrhardt  (paelzer) wrote : Re: Regression in vga handling ubuntu10.21 to ubuntu10.22

Hi Carl,
thank you for your detailed report!

This is the second qemu/xen bug for regressions in these security updates in one day - with none (=0) of them over the last two years - unlikely to be a coincidence.

@Marc - I don't see an obvious change, but you have way more context on these changes since you have backported them. Do you have any info of a potential regression in them?
Maybe the CVE-2018-5683 change?

@Carl - your detailed steps are already great.
Could you give it a try if the same applies to a unmodified (gplpv) and non-prepared/installed windows as well?
Maybe by using an ISO of [1] in your already prepared setup - and if it fails as well sharing the commands you did for that as well? That would make it even better to reproduce.

@Carl - we have another report on even Lubuntu iso's stalling. If you could (since all other parts of your setup are already ready) try the same with a boot from [2] - that is reported to hang with the new version.

If the steps above could be confirmed I'd expect that helps Marc a lot to look into the individual changes in this regard.

Probably related to bug: 1752375

[1]: https://www.microsoft.com/software-download/windows10
[2]: http://cdimage.ubuntu.com/lubuntu/releases/17.10.1/release/lubuntu-17.10.1-desktop-amd64.iso

P.S. If this doesn't reproduce for us, but Mark would provide ppa builds with individual fixes - would you be willing and able to check them?