sys-usb devices automatically removed after anon-whonix is shut down

[MartynasJanonis]

Qubes OS version: R4.0

Affected component(s):

sys-usb, anon-whonix

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Steps to reproduce the behavior:

• Start anon-whonix
• After it starts, shut it down

Expected behavior:

All sys-usb devices remain connected

Actual behavior:

All sys-usb devices are automatically removed and not visible in the device manager menu.

General notes:

Whonix version 14. I have to restart the sys-usb qube for the devices to reappear and only devices marked "dom0:" remain connected.

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Related issues:

[marmarek]

Have you connected any devices to anon-whonix, or is it totally independent? Check also "Devices" tab in anon-whonix settings - there should be no selected devices.

[marmarek]

Have you connected any devices to anon-whonix, or is it totally independent? Check also "Devices" tab in anon-whonix settings - there should be no selected devices.

[MartynasJanonis]

They are totally independent. Nothing is connected to anon-whonix. anon-whonix doesn't even have qubes-usb-proxy.

[MartynasJanonis]

They are totally independent. Nothing is connected to anon-whonix. anon-whonix doesn't even have qubes-usb-proxy.

[MartynasJanonis]

Interestingly, the devices only disappear from the toolbar and qvm-usb still shows them. Attaching a random device to any qube makes all devices reappear in the toolbar.

[MartynasJanonis]

Interestingly, the devices only disappear from the toolbar and qvm-usb still shows them. Attaching a random device to any qube makes all devices reappear in the toolbar.

[marmarek]

Hmm, do you see any errors in ~/.xsession-errors in dom0?

[marmarek]

Hmm, do you see any errors in ~/.xsession-errors in dom0?

[MartynasJanonis]

Yes,
(Thunar:5453): thunar-WARNING **: Failed to launch the volume manager (Failed to execute child process "thunar-volman" (No such file or directory)), make sure you have the "thunar-volman" package installed.

[MartynasJanonis]

Yes,
(Thunar:5453): thunar-WARNING **: Failed to launch the volume manager (Failed to execute child process "thunar-volman" (No such file or directory)), make sure you have the "thunar-volman" package installed.

[marmarek]

Anything else? Something with "qui" or "devices" in message?

[marmarek]

Anything else? Something with "qui" or "devices" in message?

[MartynasJanonis]

No, just a lot of "thunar-WARNING" messages.
Also, attaching USB devices fixes the problem (i.e. all devices become visible in the toolbar).
Attaching a screenshot of what happens after anon-whonix shuts down.

[MartynasJanonis]

No, just a lot of "thunar-WARNING" messages.
Also, attaching USB devices fixes the problem (i.e. all devices become visible in the toolbar).
Attaching a screenshot of what happens after anon-whonix shuts down.

[marmarek]

What is qid of anon-whonix and sys-usb on your system (see qvm-prefs tool)? Devices widget identifies qubes using qid and maybe get confused by this specific values for some reason?

[marmarek]

What is qid of anon-whonix and sys-usb on your system (see qvm-prefs tool)? Devices widget identifies qubes using qid and maybe get confused by this specific values for some reason?

[MartynasJanonis]

qvm-prefs --get anon-whonix qid
1
qvm-prefs --get sys-usb qid
13

[MartynasJanonis]

qvm-prefs --get anon-whonix qid
1
qvm-prefs --get sys-usb qid
13

[marmarek]

Ok, that's it. qid of anon-whonix is a prefix of sys-usb's qid. I can reproduce it by shutting down a VM with qid 1 (debian-9 in my case).
Apparently in some place comparing them is broken. @marmarta is looking where.

[marmarek]

Ok, that's it. qid of anon-whonix is a prefix of sys-usb's qid. I can reproduce it by shutting down a VM with qid 1 (debian-9 in my case).
Apparently in some place comparing them is broken. @marmarta is looking where.

[marmarta]

This is a truly magnificent bug! Hopefully we've got it and the fix is underway (just let me test if it won't break another surprising thing...)

[marmarta]

This is a truly magnificent bug! Hopefully we've got it and the fix is underway (just let me test if it won't break another surprising thing...)