On Mon, May 22, 2017 at 10:33:30PM -0300, Franz wrote:
> @Unman,
> 
> 
> On Mon, May 22, 2017 at 5:05 PM, Unman <[email protected]> wrote:
> 
> > On Mon, May 22, 2017 at 04:39:50PM -0300, Franz wrote:
> > > Many thanks Unman for trying so hard to help me :-))
> > >
> > > >
> > > > The next error arose because you were using the qvm-prefs command
> > > > incorrectly.
> > > >
> > > > And so I dont understand what you mean by "gives the same error".
> > > >
> > > >
> > > It is the first one, in the heading,  the second is just syntax that you
> > > properly corrected, but even after the correction and after running
> > > qvm-prefs without errors, then trying to start the VM I fall again to the
> > > first error.
> > >
> > >
> > > > In you  other post you say that you can start a VM when you set the
> > > > networking to none - this makes me wonder if you have not yet reset the
> > > >
> > > >
> > > It seems the end of  your paragraph is lacking.
> > >
> > >
> > > > Can you check that you have done this
> > >
> > >
> > > If you mean rebooting, yes I rebooted many times.
> > >
> > >
> > > > and then try to explicitly start
> > > > from a terminal the upstream proxies ?
> > > >
> > >
> > >  I do not know what upstream proxies are, but if you means something like
> > > qvm-start <VM-name>
> > > then I always get the heading error, unless the VM is not connected to
> > > network. In this last case it starts normally.
> > >
> > >
> > > > If I haven't understood exactly what your current problem is please can
> > > > you explain in more detail.
> > >
> > >
> > > Unman, the problem is that  in the past it was easy to fix this error
> > > simply pointing each VM to a different kernel, on the contrary now this
> > > workaround does NOT work anymore. Worse than that I cannot even make dom0
> > > recognize that I plugged in some USB stick, so even taking a backup (that
> > > luckily finished successfully)  out of dom0 is problem.
> > >
> > >
> > > > and perhaps provide the output from
> > > > qvm-start?
> > > >
> > > >
> > > qvm-start sys-net
> > > ERROR: VM kernel does not exist: /var/lib/qubes/vm-kernels/4.4.
> > 38-11/vmlinuz
> > >
> > > qvm-start personal
> > > --> Starting NetVM sys-firewall
> > > --> Starting NetVM sys-net
> > > ERROR: VM kernel does not exist: /var/lib/qubes/vm-kernels/4.4.
> > 38-11/vmlinuz
> > >
> > > result: nothing started
> > >
> > > But many thanks again for your strong patience
> > >
> >
> > So this suggests that you have not yet changed the kernel for sys-net,
> > yet you say that the qvm-prefs command runs without errors.
> > 1. Run qvm-prefs sys-net kernel.
> >
> 
> the above  command is interesting because it gives 4.4.38-11 while Qubes
> Manager gives 4.4.67-12
> 
> 
> > 2. Then qvm-prefs sys-net kernel -s <an installed kernel>
> >
> 
> qvm-prefs sys-net kernel  -s 4.4.67-12
> 
> 3. Then qvm-prefs sys-net kernel.
> >
> 
> Important change here:
> 
> I get 4.4.67-12
> 
> 
> > 4. Then qvm-start sys-net
> >
> >
> Hurrah!!! you dit it, it started. Now everything works again.
> 
> 
> So what means all that?
> 
> 1. The kernel identification provided by Qubes Manager is not reliable and
> cannot be trusted
> 2. The qvm-prefs does work, but must be run for each VM, while when you
> first taught me to use it, I understood that it could be used once for all
> VMs.
> 3. When something like that happens the best thing to do is to look for the
> commands that may help: had I known that qvm-prefs sys-net kernel gives the
> actual kernel used I would had been able to find the answer. Simply
> trusting Qubes manager was not enough.
> 
> I have no words to thank you Unman. You are methodical, one step after the
> other in the proper order, never loosing faith that a rational simple
> answer exists, even if we are perhaps thousands of kilometers far away.
> Many thanks
> Fran
> 

I'm glad that you were able to solve your problem in the end.
This looks ike an interesting bug in Qubes Manager - I'll raise an issue
for it, although the redesign in r4 may resolve it in any case.

unman

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