Public bug reported:
I'll start out with saying, this bug is probably priority "invalid" due
to my non-stock configuration (this 18.04.1 install is on an Acer
Chromebook 13, so it has a held back kernel and Xorg for the lovely
nvidia drivers it came with.) But I figure I'll file anyway since the
problem is rather serious if it arises on your particular system, and
the workaround/fix is easy once you figure out what the heck is
happening.
So, snapd has errored out since I updated to 18.04 due to my held back
kernel (snap packages are using xz compression, and this kernel has no
xz support...) I found within the last day or so that my machine would
not boot to graphical environment, just to text login with no networking
up and several missing services (ntp and a few others.) journalctl -xe
showed failures due to "file not found" on files like tr, cut, modprobe,
cat, that should definitely be found. PATH problems! Ultimately, I
found /usr/lib/systemd/system-environment-generators/snapd-env-generator
(which appears -- not sure since it's a binary instead of a shell script
-- to be intended to just add "/snap/bin" to the PATH.) I moved this
out of the folder, on reboot everything worked fine. Then I went ahead
and uninstalled snapd.
I suspect systemd is "too smart for it's own good", and instead of
providing it's own environment variables then letting items in
/usr/lib/systemd/system-environment-generators/ modify the environment
(as docs say), instead systemd either decided "snapd-env-generator" is
setting a PATH so systemd doesn't have to (resulting in PATH of
":/snap/bin") or systemd "rolled back" that PATH when snapd service
failed, resetting PATH to empty instead of the default PATH value.
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1792644
Title:
If snapd is not working it can take down systemd
Status in systemd package in Ubuntu:
New
Bug description:
I'll start out with saying, this bug is probably priority "invalid"
due to my non-stock configuration (this 18.04.1 install is on an Acer
Chromebook 13, so it has a held back kernel and Xorg for the lovely
nvidia drivers it came with.) But I figure I'll file anyway since the
problem is rather serious if it arises on your particular system, and
the workaround/fix is easy once you figure out what the heck is
happening.
So, snapd has errored out since I updated to 18.04 due to my held back
kernel (snap packages are using xz compression, and this kernel has no
xz support...) I found within the last day or so that my machine
would not boot to graphical environment, just to text login with no
networking up and several missing services (ntp and a few others.)
journalctl -xe showed failures due to "file not found" on files like
tr, cut, modprobe, cat, that should definitely be found. PATH
problems! Ultimately, I found /usr/lib/systemd/system-environment-
generators/snapd-env-generator (which appears -- not sure since it's a
binary instead of a shell script -- to be intended to just add
"/snap/bin" to the PATH.) I moved this out of the folder, on reboot
everything worked fine. Then I went ahead and uninstalled snapd.
I suspect systemd is "too smart for it's own good", and instead of
providing it's own environment variables then letting items in
/usr/lib/systemd/system-environment-generators/ modify the environment
(as docs say), instead systemd either decided "snapd-env-generator" is
setting a PATH so systemd doesn't have to (resulting in PATH of
":/snap/bin") or systemd "rolled back" that PATH when snapd service
failed, resetting PATH to empty instead of the default PATH value.
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