This seems to be an issue with qvm-features. And this is not the issue with only QWT 4.1.68, I have the same issue with QWT 4.1.67.
I have Windows 7 HVM with previously installed QWT 4.1.67 but now uninstalled. Never installed QWT 4.1.68 on it.
After uninstalling QWT I’ve manually removed QWT qvm-features:
qvm-features -D win7 no-monitor-layout
qvm-features -D win7 menu-items
qvm-features -D win7 gui
qvm-features -D win7 gui-emulated
qvm-features -D win7 qrexec
qvm-features -D win7 timezone
qvm-features -D win7 audio-model
qvm-features -D win7 rpc-clipboard
qvm-features -D win7 os
So its qvm-features are:
I clone this HVM and install either QWT 4.1.67 or QWT 4.1.68 in it then reboot after installation complete.
When I boot up this cloned HWM and try to copy from it with Ctrl+Shift+C there is no notification in dom0 about clipboard copy and nothing copied in it. I can’t paste in this HVM from global clipboard as well. Other than that everything works fine. Display works fine as well and I have two Qubes Video Driver displays in settings.
qvm-features are automatically set as they should:
Then I reboot this HVM again and now I have a problem with HVM display but everything else works fine - I can copy/paste from global clipboard. The display from Qubes Video Driver seems to be secondary display and doesn’t respond to mouse clicks and keyboard (at least there is no change on this display).
When I force stubdom:
qvm-start-gui --force-stubdomain win7-tst
I can see the stubdom display that is main display and is display settings there is 3 displays available - 1 from stubdom and 2 from Qubes Video Driver.
If I set Qubes Video Driver display as main display and reboot then everything works fine but in display settings I still have 3 displays but all of them are from Qubes Video Driver.
Now if I clone my original Windows 7 HVM once again but set the qvm-features to how they are with QWT installed:
qvm-features win7-tst os Windows
qvm-features win7-tst rpc-clipboard 1
qvm-features win7-tst audio-model ich6
qvm-features win7-tst timezone localtime
qvm-features win7-tst no-monitor-layout 1
qvm-features win7-tst qrexec 1
qvm-features win7-tst gui 1
qvm-features win7-tst gui-emulated ''
Then I boot it and also need to start gui with
--force-stubdomain to see display and then install either QWT 4.1.67 or QWT 4.1.68 in it then reboot after installation complete.
After reboot everything works fine and if I reboot again everything is still working.