After I did the last update in Arch, OpenVPN3 client stopped working and gave me the following error:
** ERROR ** Failed calling D-Bus method UserInputProvide: GDBus.Error:net.openvpn.v3.sessions.error: Backend VPN process has died. Session is no longer valid.
I found that this error is still not fixed, but you can easily do a workaround.
So why does this error happen?
It seems there is a problem in glib2 v.2.76.1 (which is what I got updated recently) and it generates a Null in one of the functions OpenVPN uses for the authentication. So, after authenticating, that error appears and client crashes.
How to fix it?
While we wait for a better solution, one easy fix for this is to downgrade glibc to version 2.74.6. Just be aware that this has to be a temporary downgrade while a fix is available, and that downgrading might break your system.
To downgrade, you can install the downgrade command from the AUR, and then do the following:
sudo downgrade 'glib2=2.74.6'
This will downgrade your glib to that version which works perfectly with current OpenVPN 3. Once connected, I advise to upgrade again to current glib2 to avoid possible errors in other apps which depend on newer version.
You can upgrade using the same downgrade tool with:
sudo downgrade 'glib2=2.76.1'
This will probably pop a window which lets you select that package from the cache. Just reinstall and you're good to go.
I have used this as a temporary fix, and I hope OpenVPN will get updated soon to support current glib.
Also, I read in some blogs that this issue also happens on other Linux distributions, but I don't use them so I can't provide a solution for them. This fix of downgrading should work on any Linux, let me know if you do it on other distros.
Hope this helps someone.
Regards,
Damian
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