Comment 34 for bug 2020782

Hi Daniel,

Thanks again, and I totally agree that we need to focus on the revert resolution issue in this LP bug. I wasn't willing to discuss the other issues here, but to summarize my understanding so far, so as to make sure we are on the same page.

Also, I tested "xrandr --output VNC-output-1 --auto" to enable another monitor using Budgie and Xfce (I believe none of them use mutter), and I can't reproduce the "blank screen". It doesn't really do anything, but also doesn't reproduce the blank screen issue.

This is what I see in Xfce:

https://pastebin.ubuntu.com/p/BNs9KJqbHz/

And Budgie:

https://pastebin.ubuntu.com/p/pKTGzJb8bN/

My previous suggestion (patch with zero hz fix + no fractional scaling) was because I thought vv1 was also exposed to the issue you mentioned on comment #19 ("fractional scaling patch is trying to implement the revert using fractional scaling"), but I guess not, and it still fails with the "Invalid mode 800x600 (-nan)" errors, which is the zero hz issue, and led us to vv2 and then vv4.

So, the current situation is that either with vv4 (zero hz patch + no fractional scaling) OR vv5 with fractional scaling disabled (zero hz patch included) we get to the situation where the extra monitors are automatically enabled and the resolution is changed to 800x600:

https://pastebin.ubuntu.com/p/k822YMHM5v/

And IIUC this is what needs to be investigated next.

And no need to apologize if not able to respond this daily, completely understandable and you're already doing a lot for this bug. Thank you very very much for that!

I'll also be OoO for the next couple of days, back on Monday anyway.

Cheers,
Fabio Martins