After doing a dom0 update, `qubes-qmemman.service` fails to start, causing all VMs to be unbootable. The problem is that `/usr/lib64/python3.13/site-packages/xen/lowlevel/xs.cpython-313-x86_64-linux-gnu.so` is a 33k file that contains all zeros: [PXL_20260703_054602189] Unfortunately, I don’t ha…

My main problem was that I didn’t have a recent enough backup and had some important work that I didn’t want to lose. I ended up fixing the qubes-qmemman.service start failure by copying /usr/lib64/python3.13/site-packages/xen/lowlevel/xs.cpython-313-x86_64-linux-gnu.so from a fresh install on anoth…

Failed to start qubes-qmemman.service: invalid ELF header

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pgpqubes July 6, 2026, 2:53pm 6

Just so you know, I’m having exactly the same problem—I just entered the commands

The problem occurred during the major dom0 update to upgrade the kernel from 6.19 to 7.0.

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Failed update this morning 7/2/2026