Comment 25 for bug 1755912

Running the Bionic ISO like:
$ qemu-system-x86_64 -cpu host -smp cores=4,threads=2 -boot d -m 2048 -enable-kvm -vga qxl -vnc :21 -cdrom ubuntu-18.04-desktop-amd64.iso

Attaching like:
$ vncviewer FullColor=1 AutoSelect=0 10.245.168.42:5921
(alternatives on tigervnc)
Well for me it had "-k de" as well :-)

Then boot into the "try Ubuntu" live CD mode.
There opened a terminal to loop on xrandr.

Running the loop of above in that guest to crash it after a while.

Upgrade to proposed:
$ sudo apt install qemu-system-x86=1:2.11+dfsg-1ubuntu7.5
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  samba vde2 qemu-block-extra sgabios ovmf
The following packages will be upgraded:
  qemu-system-x86
1 upgraded, 0 newly installed, 0 to remove and 16 not upgraded.
Need to get 5.168 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu bionic-proposed/main amd64 qemu-system-x86 amd64 1:2.11+dfsg-1ubuntu7.5 [5.168 kB]
Fetched 5.168 kB in 1s (7.666 kB/s)
(Reading database ... 127990 files and directories currently installed.)
Preparing to unpack .../qemu-system-x86_1%3a2.11+dfsg-1ubuntu7.5_amd64.deb ...
Unpacking qemu-system-x86 (1:2.11+dfsg-1ubuntu7.5) over (1:2.11+dfsg-1ubuntu7.4) ...
Setting up qemu-system-x86 (1:2.11+dfsg-1ubuntu7.5) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...

Running the loop again with the same setup - no crash in 15 minutes - assume that means good now.
I'd be glad about someone else checking the result as well, best someone formerly affected by it.
(and having a tick in the eye for seeing my right screen change sizes and flicker all the time)

Setting verified