Help: snapd can't start

[joyce]

Hi, I have a problem with snapd, I can’t figure out what the solution can be, could you please help me?

joyce@workstation:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 16.04.6 LTS
Release:	16.04
Codename:	xenial

joyce@workstation:~$ snap version
snap    2.42.1
snapd   unavailable
series  -


joyce@workstation:~$ sudo SNAPD_DEBUG=1 /usr/lib/snapd/snapd
AppArmor status: apparmor is enabled and all features are available
2020/05/03 12:14:00.957905 activation.go:64: DEBUG: socket "/run/snapd.socket" was not activated; listening
2020/05/03 12:14:00.957987 activation.go:64: DEBUG: socket "/run/snapd-snap.socket" was not activated; listening
2020/05/03 12:14:00.958779 daemon.go:346: started snapd/2.42.1 (series 16; classic) ubuntu/16.04 (amd64) linux/4.4.0-178-generic.
2020/05/03 12:14:01.023497 daemon.go:439: adjusting startup timeout by 30s (pessimistic estimate of 30s plus 5s per snap)
2020/05/03 12:14:01.037701 main.go:143: DEBUG: activation done in 85ms
2020/05/03 12:14:06.038396 daemon.go:540: gracefully waiting for running hooks
2020/05/03 12:14:06.038439 daemon.go:542: done waiting for running hooks
daemon stop requested to wait for socket activation

joyce@workstation:~$ journalctl -u snapd
No journal files were found.
-- No entries --

joyce@workstation:~$ sudo service snaptd start
snaptd: unrecognized service

Whether this could relate to hardware? My laptop works well, no this problem. But my desktop has this problem, I use AMD Ryzen 1700 cpu.

joyce@workstation:~$ sudo lshw -C cpu
[sudo] password for joyce: 
  *-cpu                   
       description: CPU
       product: AMD Ryzen 7 1700 Eight-Core Processor
       vendor: Advanced Micro Devices [AMD]
       physical id: 31
       bus info: cpu@0
       version: AMD Ryzen 7 1700 Eight-Core Processor
       serial: Unknown
       slot: AM4
       size: 3GHz
       capacity: 3750MHz
       width: 64 bits
       clock: 100MHz
       capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_l2 mwaitx cpb hw_pstate ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 clzero arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic overflow_recov succor smca cpufreq
       configuration: cores=8 enabledcores=8 threads=16

Thanks for your help.

[dimitri]

@joyce

joyce@workstation:~$ sudo service snaptd start
snaptd: unrecognized service

I don’t know about the rest but it’s snapd, not snaptd.

[ijohnson]

Do you have any snaps installed? Snapd will automatically shut itself down if there are no snaps installed. Try installing the hello-world snap with snap install hello-world.

[joyce]

@dimitri

sudo service snaptd start

Hi, my bad, just a typo, but result the same

joyce@workstation:~$ sudo service snapd start
snapd: unrecognized service

[joyce]

Hi, I can’t install anything by snap. It seems snapd daemon doesn’t start correctly.

joyce@workstation:~$ snap install hello-world
error: cannot communicate with server: Post http://localhost/v2/snaps/hello-world: dial unix /run/snapd.socket: connect: no such file or directory

[ogra]

whats the output of uname -a ?

[joyce]

Hi, here it is

joyce@workstation:~$ uname -a
Linux workstation 4.4.0-178-generic #208-Ubuntu SMP Sun Apr 5 23:45:10 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

[ogra]

@joyce

joyce@workstation:~$ sudo service snapd start
snapd: unrecognized service

you want systemctl start snapd not service snapd start

[joyce]

Hi, thanks, I do really found something wrong with my systemctl.

joyce@workstation:~$ systemctl start snapd
Failed to add /run/systemd/ask-password to directory watch: No such file or directory
Failed to start snapd.service: Unknown unit: snapd.service
See system logs and 'systemctl status snapd.service' for details.

My installed systemd is not complete, I tried to reinstall it again, it obvisously something wrong going on. I’ll try to figure it out. Before reinstall:

joyce@workstation:~$ ll /run/systemd/
total 0
drwxr-xr-x  6 root root  120 Mai  2 22:13 ./
drwxr-xr-x 30 root root 1140 Mai  4 08:38 ../
drwxr-xr-x  2 root root  240 Mai  4 13:31 inhibit/
drwxr-xr-x  2 root root   60 Mai  2 22:13 seats/
drwxr-xr-x  2 root root  140 Mai  2 22:13 sessions/
drwxr-xr-x  2 root root   80 Mai  2 22:13 users/

When I reinstall:

joyce@workstation:~$ sudo apt-get install --reinstall systemd
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 3.799 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 systemd amd64 229-4ubuntu21.27 [3.799 kB]
Fetched 3.799 kB in 1s (2.975 kB/s)  
(Reading database ... 386846 files and directories currently installed.)
Preparing to unpack .../systemd_229-4ubuntu21.27_amd64.deb ...
Unpacking systemd (229-4ubuntu21.27) over (229-4ubuntu21.27) ...
Processing triggers for ureadahead (0.100.0-19.1) ...
ureadahead will be reprofiled on next reboot
Processing triggers for dbus (1.10.6-1ubuntu3.5) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up systemd (229-4ubuntu21.27) ...
addgroup: The group `systemd-journal' already exists as a system group. Exiting.
Operation failed: No such file or directory
[/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring.

After I reinstall:

joyce@workstation:~$ ll /run/systemd/
total 4
drwxr-xr-x 10 root            root             220 Mai  4 14:10 ./
drwxr-xr-x 31 root            root            1180 Mai  4 14:10 ../
drwxr-xr-x  2 root            root              40 Mai  4 14:10 ask-password/
drwxr-xr-x  2 root            root             240 Mai  4 14:10 inhibit/
drwxr-xr-x  2 root            root              40 Mai  4 14:10 machines/
drwxr-xr-x  4 systemd-network systemd-network   80 Mai  4 14:10 netif/
drwxr-xr-x  2 root            root              60 Mai  2 22:13 seats/
drwxr-xr-x  2 root            root             140 Mai  2 22:13 sessions/
drwxr-xr-x  2 root            root              40 Mai  4 14:10 shutdown/
drwxr-xr-x  2 root            root              80 Mai  2 22:13 users/
-rw-r--r--  1 root            root              72 Mai  4 14:09 was-enabled

I compared this directory with the one in my laptop, a lot missing.

[ogra]

@joyce

joyce@workstation:~$ systemctl start snapd

you probably want to put a sudo in front next time ?

[joyce]

thanks,

joyce@workstation:~$ sudo systemctl start snapd
Failed to start snapd.service: Unknown unit: snapd.service
See system logs and 'systemctl status snapd.service' for details.

[ogra]

looks like a more systemic issue, I’d try re-installing the snapd package like you did with systemd above …

[hydherhssn]

I have tried installing snapd service on my Debian 10 lxd container.

however, I was not able to run snap install core

root@server:~# snap install core
error: cannot communicate with server: Post "http://localhost/v2/snaps/core": dial unix /run/snapd.socket: connect: no such file or directory

since systemd is disabled on this container for other reasons I cannot run systemctl start snapd.service.

Instead, I tried service snapd start but I am getting package error.

root@server:~# service snapd status
snapd: unrecognized service

can you please help me with this?

[ogra]

i fear systemd is currently a hard requirement. not only to make snapd start but also to install and run snaps (snap packaged daemons create system units, instaling a snap creates a system mount unit for the squashfs snap file)

[chandraveer]

You are facing this issues b’cos of the Graphic card It’ll we work with Nvidia CUDA GPU!!

[jsal]

I have the same issue on CentOS7, I posted my issue on this page:

Snapd is unavailable on Centos7

I installed snapd on CentOs7and it is showing running, but when wanna install a package or checking version it shows snapd is not available, and when wanna install sth with snap or doing snap ack it says: cannot communicate with server: timeout exceeded while waiting for response; could please tell me what should I do? by the way, I removed with: rpm -e snapd and reinstall it again but still has the same problem. also used binary .rpm file and install it and had the same problem mentioned… You…

help me pls!!