I created a new Windows 7 HVM and installed the qubes tools, but the seamless mode doesn't work, and without the seamless mode option selected I can't resize or maximize the window.
I have another Windows 7 HVM that I created several months ago and that is working fine in seamless mode or maximizing the window display without the seamless mode.
I remember that when I created the previous HVM I didn't need the workaround about the cirrus display driver. Maybe something changed in Qubes since that installation.
Another difference with this new HVM is the Windows 7 version:
-Old HVM (where the seamless mode works fine): Windows 7 Ultimate (Spanish edition)
-New HVM: Windows 7 Home Basic (Spanish edition)
I compared the conf files of the HVMs and they have the same configuration, obviously at the exception of the disk file names and IP address.
What could be the reason that this functionality isn't working in the new HVM?
Well, I tried to reinstall the qubes win tools several times. Maybe there is a bug in the new version of the qubes video driver. But I don't know how to obtain a previous version of qubes tools to test using a previous version of the qubes video driver.
About reinstalling Windows over a clone of my previous VM. I tried, but unfortunately Windows doesn't allow to install a Windows Home version over a Windows Ultimate.