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D-Bus failure: Variant type does not match during "Error: Deleting access point connection profile failed"
When I run sudo wifi-connect on a Raspberry Pi Zero, I get this error:
Error: Deleting access point connection profile failed
caused by: D-Bus failure: Variant type does not match: Variant(Iter(UInt32))
I was previously using comitup, which is a nightmare, so I ran sudo apt-get remove comitup, then installed wifi-connect. Is it because I had network-manager installed before and some services weren't configured?
@theronic can you please let me know what is the version of network-manager installed (nmcli --version) and what OS is used and the version it as well? I suspect it could be incompatibility with the NetworkManager version.
You may delete manually any existing access point connection profile by running nmcli c delete NAME. You may find the connection profiles in /etc/NetworkManager/system-connections/ to check for the name. After you manually delete it, you may try running wifi-connect again.
OS: Raspbian Stretch 9.4 (Lite version).
nmcli tool, version 1.6.2
Despite manually deleting any connections of type "ap", the only way I could get wifi-connect to run, was to skip delete_access_point_profiles.
I also tried to explicitly update to latest v0.5.2 of the dbus crate, but no dice.
Can you advise which version of network-manager or dbus I can downgrade to?
I tried a stripped down project with dependencies network-manager = "0.11" and dbus="0.5.4", and it throws the same error when calling this:
let manager = NetworkManager::new();
let connections = manager.get_connections().unwrap();
Also tried cloning latest network-manager 0.11.2 and including as path dependency - same problem.
@theronic I tried reproducing this today, but my Pi Zero device stopped working (some HW problem) and I need to order a new one. I verified everything is working well on newer Pi models with both the first released Raspbian Stretch version and the newest one. Did you tried running it on latest Raspbian as well?
@majorz I get the same error on a Raspberry Pi 3B+ running Raspbian Lite, even after updating to latest distro via apt-get update && ...upgrade && ... dist-upgrade.
Are you running Raspbian Lite or Raspbian with Desktop?
When I run the install script, and try to install, this is what I see:
pi@raspberrypi:~ $ bash <(curl -L https://github.com/balena-io/wifi-connect/raw/master/scripts/raspbian-install.sh)
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 157 100 157 0 0 105 0 0:00:01 0:00:01 --:--:-- 105
100 4611 100 4611 0 0 1743 0 0:00:02 0:00:02 --:--:-- 12102
WiFi Connect Raspbian Installer: Retrieving latest release from https://api.github.com/repos/balena-io/wifi-connect/releases/latest...
WiFi Connect Raspbian Installer: Downloading and extracting https://github.com/balena-io/wifi-connect/releases/download/v4.2.2/wifi-connect-v4.2.2-linux-rpi.tar.gz...
WiFi Connect Raspbian Installer: Successfully installed wifi-connect 4.2.2
WiFi Connect Raspbian Installer: NetworkManager is already installed
WiFi Connect Raspbian Installer: NetworkManager is already active
WiFi Connect Raspbian Installer: Run 'wifi-connect --help' for available options
pi@raspberrypi:~ $ wifi-connect --help
wifi-connect 4.2.2
Zahari Petkov <[email protected]>
...
pi@raspberrypi:~ $ sudo wifi-connect
Error: Deleting access point connection profile failed
caused by: D-Bus failure: Variant type does not match: Variant(Iter(UInt32))
@theronic I run it now on a Raspberry Pi 1 as well (same processor as the Zero) and all is going well there as well. Run it before on both the 3B and 3B+.
Here are the exact steps I am doing:
- I download a Raspbian Lite Stretch image (both the oldest available and the newest)
- Flash an SD card with latest Etcher
- mount the boot partition and put an
sshempty file there - Plug a WiFi dongle on the Pi 1 (or use the built in on the Pi 3)
- Plug an Ethernet cable
- Boot the device and ssh to it
- bash <(curl -L https://github.com/balena-io/wifi-connect/raw/master/scripts/raspbian-install.sh)
- Run sudo wifi-connect
- From a second ssh session I do:
cd /etc/NetworkManager/system-connections && sudo cp WiFi\ Connect AP(this is to duplicate the access point profile and I close the new ssh session) - Exit wifi-connect started in 8. with Ctrl+C
- Restart NetworkManager with
sudo systemctl restart NetworkManager(so that it picks up the copied AP connection profile) - Start wifi-connect again - the copied connection profile no longer exists and wifi-connect runs properly
I do not update the OS, I will try with updating now.
I realize that I was trying with a Comitup image, which comes pre-installed with NetworkManager. Maybe this was conflicting with wifi-connect?
Trying to replicate your steps now using base Raspbian Stretch Lite.
I checked now with dist-upgraded Raspbian Stretch Lite and things are working fine.
The error you receive with the D-Bus types mismatch could be possibly caused by some packaging issues indeed.
When I install wifi-connect on a freshly-flashed RPi 3B (with an wpa_supplicant.conf file so I can connect to it at all over Wifi), dhcpcd is deactivated, the Pi drops off WiFi and I can't get it back on my network. It also does not broadcast any hotspot :/:
pi@raspberrypi:~ $ bash <(curl -L https://github.com/balena-io/wifi-connect/raw/master/scripts/raspbian-install.sh)
bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 157 100 157 0 0 77 0 0:00:02 0:00:02 --:--:-- 77
100 4611 100 4611 0 0 1318 0 0:00:03 0:00:03 --:--:-- 6902
WiFi Connect Raspbian Installer: Retrieving latest release from https://api.github.com/repos/balena-io/wifi-connect/releases/latest...
WiFi Connect Raspbian Installer: Downloading and extracting https://github.com/balena-io/wifi-connect/releases/download/v4.2.2/wifi-connect-v4.2.2-linux-rpi.tar.gz...
WiFi Connect Raspbian Installer: Successfully installed wifi-connect 4.2.2
WiFi Connect Raspbian Installer: NetworkManager is not installed
WiFi Connect Raspbian Installer: Continue to install NetworkManager and disable dhcpcd? [y/N] y
WiFi Connect Raspbian Installer: Downloading NetworkManager...
Get:1 http://archive.raspberrypi.org/debian stretch InRelease [25.3 kB]
....
Fetched 5524 kB in 23s (235 kB/s)
Download complete and in download only mode
WiFi Connect Raspbian Installer: Deactivating and disabling dhcpcd...
packet_write_wait: Connection to 192.168.1.58 port 22: Broken pipe
@theronic this is the expected behavior, since the install script does not transfer WiFi connection settings from dhcpcd to NetworkManager.
You may solve this by creating a new shell script like this (install-wifi-connect.sh):
#!/bin/bash
bash <(curl -L https://github.com/balena-io/wifi-connect/raw/master/scripts/raspbian-install.sh) -- -y
wifi-connect
And then execute it with: nohup ./install-wifi-connect.sh &.
The bash ... -- -y will tell the installer to not ask for confirmation. nohup is needed so that when your ssh session is disconnected the script continues to run. At the end once wifi-connect is started you may reenter your WiFi credentials.
Alternatively you may install it through Ethernet connection, which I would recommend.
I am getting this same issue now. I installed wireguard for a client connection to my zerotier server and zerotier to have remote access.
I am using a Raspberry Pi 3B with Buster.
I did not check Wifi Connect after installing and configuring those other packages. I have rerun the install script and I get the same error.
Edit: I just checked an earlier image before the zerotier install and it works fine. Must be something with zerotier.
Further update. When ZeroTier is connected to a network I get the D-Bus error and wifi-connect fails.
If I leave the ZeroTier network, wifi-connect functions as expected.
I seem to be having the same problem as @Judman, ZeroTier is installed, and: Error: Deleting access point connection profile failed
I can confirm that running systemctl stop zerotier-one before running wifi-connect is a work-around.
With the help of someone who speaks Rust, I was able to drill down from wifi-connect -> balena-networkmanager -> dbus 0.5.
Balena's network-manager calls ListConnections:
https://github.com/balena-io-modules/network-manager/blob/4da2e6a57de16b6ae911f74321f929d78af8b1ba/src/dbus_nm.rs#L86
Here's what the call to ListConnections returns when a ZeroTier interface is configured. I suspect there's something in this struct that dbus 0.5 is failing to demarshal into a Rust struct:
method call time=1689797229.418906 sender=:1.117 -> destination=org.freedesktop.NetworkManager serial=2 path=/org/freedesktop/NetworkManager/Settings; interface=org.freedesktop.NetworkManager.Settings; member=ListConnections
method return time=1689797229.420383 sender=:1.21 -> destination=:1.117 serial=29104 reply_serial=2
array [
object path "/org/freedesktop/NetworkManager/Settings/1"
object path "/org/freedesktop/NetworkManager/Settings/2"
object path "/org/freedesktop/NetworkManager/Settings/6"
object path "/org/freedesktop/NetworkManager/Settings/7"
]
method call time=1689797229.446097 sender=:1.117 -> destination=org.freedesktop.NetworkManager serial=6 path=/org/freedesktop/NetworkManager/Settings/7; interface=org.freedesktop.NetworkManager.Settings.Connection; member=GetSettings
method return time=1689797229.449502 sender=:1.21 -> destination=:1.117 serial=29110 reply_serial=6
array [
dict entry(
string "connection"
array [
dict entry(
string "autoconnect"
variant boolean false
)
dict entry(
string "id"
variant string "ztmjfehtjp"
)
dict entry(
string "interface-name"
variant string "ztmjfehtjp"
)
dict entry(
string "permissions"
variant array [
]
)
dict entry(
string "timestamp"
variant uint64 1689797019
)
dict entry(
string "type"
variant string "tun"
)
dict entry(
string "uuid"
variant string "77ef4f5a-e31c-42a5-92e5-559e3a5737c8"
)
]
)
dict entry(
string "tun"
array [
dict entry(
string "mode"
variant uint32 2
)
]
)
dict entry(
string "ipv4"
array [
dict entry(
string "address-data"
variant array [
array [
dict entry(
string "address"
variant string "192.168.191.191"
)
dict entry(
string "prefix"
variant uint32 24
)
]
]
)
dict entry(
string "addresses"
variant array [
array [
uint32 3217008832
uint32 24
uint32 0
]
]
)
dict entry(
string "dns"
variant array [
]
)
dict entry(
string "dns-priority"
variant int32 100
)
dict entry(
string "dns-search"
variant array [
]
)
dict entry(
string "method"
variant string "manual"
)
dict entry(
string "route-data"
variant array [
]
)
dict entry(
string "routes"
variant array [
]
)
]
)
dict entry(
string "ipv6"
array [
dict entry(
string "address-data"
variant array [
]
)
dict entry(
string "addresses"
variant array [
]
)
dict entry(
string "dns"
variant array [
]
)
dict entry(
string "dns-priority"
variant int32 100
)
dict entry(
string "dns-search"
variant array [
]
)
dict entry(
string "method"
variant string "link-local"
)
dict entry(
string "route-data"
variant array [
]
)
dict entry(
string "routes"
variant array [
]
)
]
)
dict entry(
string "proxy"
array [
]
)
]