On Thursday, January 24, 2019 at 4:13:36 PM UTC+1, Lorenzo Lamas wrote:
> Please help, after updating dom0 with security-testing(which installed not 
> only qubes-desktop-linux-manager and qubes-manager, but also 
> qubes-mgmt-salt-dom0-update-4.0.5-1 and reboot, no VM at all will start.
> Failed to connect to qmmemman:[Errno 2] No such file or directory.
> Text boot shows:
> Failed to start Qubes memory management daemon.
> 
> systemctl status qubes-qmemman.service shows:
> "qubes-qmemman.service - Qubes memory management daemon
> Loaded: loaded (/usr/lib/systemd/system/qubes-qmemman.service; enabled; 
> vendor preset: enabled)
> Active: failed (Result: exit code) since Thu 2019-01-24 15:41:40 CET; 1min 1s 
> ago
> Proces: 2094 ExecStart=/usr/bin/qmemmand (code=exited, status=1/FAILURE]
> Main PID: 2094 (code-exited, status=1/FAILURE)
> 
> Jan 24 15:41:40 dom0 qmemmand[2094]: sys.exit(main())
> Jan 24 15:41:40 dom0 qmemmand[2094]: File 
> "/usr/lib/python3.5/site-packages/qubes/tools/qmemmand.py", line 261, in main
> Jan 24 15:41:40 dom0 
> qmemmand[2094]:qubes.utils.parse_size(config.get('global', vm-min-mem'))
> Jan 24 15:41:40 dom0 qmemmand[2094]: File 
> "/usr/lib/python3.5/site-packages/qubes/utils.py", line 107, in parse_size
> Jan 24 15:41:40 dom0 qmemmand[2094]: raise qubes.exc.QubesException("Invalid 
> size: {0}.".format(size))
> Jan 24 15:41:40 dom0 qmemmand[2094]: qubes.exc.QubesException: Invalid size 
> 190MIB.
> Jan 24 15:41:40 dom0 systemd[1]: qubes-qmemman.service: Main proces exited, 
> code-exited, status=1/FAILURE
> Jan 24 15:41:40 dom0 systemd[1]: Failed to start Qubes memory management 
> daemon.
> Jan 24 15:41:40 dom0 systemd[1]: qubes-qmemman.service: Unit entered failed 
> state.
> Jan 24 15:41:40 dom0 systemd[1]: qubes-qmemman.service: Failed with result 
> 'exit-code'.
> 
> I tried to undo the update with dnf history undo but it says the package is 
> not available.

Well, thanks to the help of someone more knowledgeable than me, I was able to 
fix it.
The trick was to edit /etc/qubes/qmemman.conf.
In the line vm-min-mem = 190MIB replace with 190M
In the line dom0-mem-boost = 333MIB replace with 333M.
Maybe a typo in one of the patches?

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