Same issue here. I have one snap installed. The Debian Qubes that do not have a Snap do not have this problem.
In this post the proposed solution to change the Kernel is not an option on Qubes 4.1 because the other kernels are not available: Domain failed to start: Cannot connect to qrexec agent - #4 by pr0xy
I there are other community posts about the same error:
This is happening to me on both the Template and AppVMs based on the template, based on Debian 10 (full, not minimal).
I get the error:
Domain VMNAME has failed to start: Cannot connect to qrexec agent for 60 seconds, see /var/log/xen/console/guest-VMNAME. log for details.
The tail end of the log shows:
[.[0;32m OK .[0m] Started .[0;1;39mAdjust root filesystem size.[0m.
[ 3.722875] xen_netfront: Initialising Xen virtual ethernet driver
[.[0;32m OK .[0m] Found device .[0;1;39m/dev/xv…
Not sure if it is relevant either but I figured I would include it as I didn’t have many other things to go off of that I did wrong in my eyes but I thought that could have been one of them. considering downsizing the vms storage before I realized there are risks associated with that, risks I am not willing to take…
It never maxed out entirely but around 1% was left at one point, and I determined this because in the top right a triangular yellow exclamation icon appeared telling me the percen…
So I was trying to make a blackarchlinux and Kali templates (because my job is a pen tester). I don't know why but after installing tools on blackarchlinux and Kali I cant start the template. When I boot it up I get can not connect to qrexec agent for 60 sec, see /var/log/xen/console/guest/guest-blackarch.log" From what I can gather it does not recognize the xenfs format because it says "failed to mount /proc/xen" when I run "sudo xl console -r blackarchlinux" in dom0. it does say more although …
From time to time I’m getting this notorious error while trying to start win 7 qubes. Last time it happened it was after I had to kill the qube due to it’s unresponsiveness.
I couldn’t find an answer (mostly suggestions are to increase working memory, but useless).
After some time after I had to stop using QubesOS because I couldn’t get my soundcard working, I bought a new one and wanted to install Qubes again. In my last time of using Qubes I never had any problems at all. The used hardware is not different, it’s just 1 usb soundcard more plugged in.
After cloning the fedora-32 template and trying to update it to fedora-35 and quitting it, I cannot start it once more. Neither the template or any domain connected to the template. The problem doesn’t chang…
And many more without a solution.
I could fix it eventually by increasing the memory to 400 and 4000.
I wonder through how can it be, that without making any changes to a Qube it runs fine for a while with 200 and 2000 as the memory setting and then suddenly it is no longer enough and it requires more?