Modemmanager 1.10-1 <info> Couldn't check support for device '/sys/devices/pci0000:00/0000:00:1c.2/0000:02:00.0'

Glenn.greenfield glenn.greenfield at protonmail.com
Tue Feb 12 22:46:26 UTC 2019


Machine: Acer Chromebook 14 CB3-431
Init sysem: OpenRC -OR- runit (not systemd) if that matters.
Just trying to write a udev rule to simply ignore the onboard Intel Wireless 7265 (Dual Band Wireless-AC 7265) but can't seem to get it right.

Thank you much if you can help!  Will gladly provide any additional details you would need to get this sorted.

On boot, modemmanager hangs the boot process with this informative message:

Couldn't check support for device  '/sys/devices/pci0000:00/0000:00:1c.2/0000:02:00.0' not supported by any plugin

# udevadm info -a -p /sys/class/net/wlp2s0

  looking at device '/devices/pci0000:00/0000:00:1c.2/0000:02:00.0/net/wlp2s0':
    KERNEL=="wlp2s0"
    SUBSYSTEM=="net"
    DRIVER==""
    ATTR{carrier_changes}=="4"
    ATTR{carrier}=="1"
    ATTR{dev_id}=="0x0"
    ATTR{carrier_down_count}=="2"
    ATTR{proto_down}=="0"
    ATTR{address}=="7c:b0:c2:d5:88:dd"
    ATTR{operstate}=="up"
    ATTR{link_mode}=="1"
    ATTR{dormant}=="0"
    ATTR{mtu}=="1500"
    ATTR{gro_flush_timeout}=="0"
    ATTR{carrier_up_count}=="2"
    ATTR{ifalias}==""
    ATTR{netdev_group}=="0"
    ATTR{ifindex}=="2"
    ATTR{broadcast}=="ff:ff:ff:ff:ff:ff"
    ATTR{type}=="1"
    ATTR{dev_port}=="0"
    ATTR{name_assign_type}=="4"
    ATTR{addr_assign_type}=="3"
    ATTR{addr_len}=="6"
    ATTR{tx_queue_len}=="1000"
    ATTR{iflink}=="2"
    ATTR{flags}=="0x1003"

  looking at parent device '/devices/pci0000:00/0000:00:1c.2/0000:02:00.0':
    KERNELS=="0000:02:00.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="iwlwifi"
    ATTRS{broken_parity_status}=="0"
    ATTRS{subsystem_device}=="0x5010"
    ATTRS{dma_mask_bits}=="36"
    ATTRS{vendor}=="0x8086"
    ATTRS{local_cpus}=="f"
    ATTRS{class}=="0x028000"
    ATTRS{numa_node}=="-1"
    ATTRS{max_link_width}=="1"
    ATTRS{msi_bus}=="1"
    ATTRS{device}=="0x095a"
    ATTRS{current_link_width}=="1"
    ATTRS{max_link_speed}=="2.5 GT/s"
    ATTRS{local_cpulist}=="0-3"
    ATTRS{driver_override}=="(null)"
    ATTRS{d3cold_allowed}=="1"
    ATTRS{irq}=="313"
    ATTRS{revision}=="0x59"
    ATTRS{current_link_speed}=="2.5 GT/s"
    ATTRS{consistent_dma_mask_bits}=="36"
    ATTRS{ari_enabled}=="0"
    ATTRS{devspec}==""
    ATTRS{enable}=="1"
    ATTRS{subsystem_vendor}=="0x8086"

  looking at parent device '/devices/pci0000:00/0000:00:1c.2':
    KERNELS=="0000:00:1c.2"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
    ATTRS{secondary_bus_number}=="2"
    ATTRS{subordinate_bus_number}=="2"
    ATTRS{broken_parity_status}=="0"
    ATTRS{subsystem_device}=="0x7270"
    ATTRS{dma_mask_bits}=="32"
    ATTRS{vendor}=="0x8086"
    ATTRS{local_cpus}=="f"
    ATTRS{class}=="0x060400"
    ATTRS{numa_node}=="-1"
    ATTRS{max_link_width}=="1"
    ATTRS{msi_bus}=="1"
    ATTRS{device}=="0x22cc"
    ATTRS{current_link_width}=="1"
    ATTRS{max_link_speed}=="2.5 GT/s"
    ATTRS{local_cpulist}=="0-3"
    ATTRS{driver_override}=="(null)"
    ATTRS{d3cold_allowed}=="1"
    ATTRS{irq}=="311"
    ATTRS{revision}=="0x35"
    ATTRS{current_link_speed}=="2.5 GT/s"
    ATTRS{consistent_dma_mask_bits}=="32"
    ATTRS{ari_enabled}=="0"
    ATTRS{devspec}==""
    ATTRS{enable}=="1"
    ATTRS{subsystem_vendor}=="0x8086"

  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""
I've tried writing a (few different) rules for udev rather unsuccessfully:

KERNELS=="0000:02:00.0", ENV{ID_MM_DEVICE_IGNORE}="1"
The rule is read but apparently incorrect as the boot still hangs

    udevadm test /sys/class/net/wlp2s0 /snip/ created db file
     '/run/udev/data/n2' for
     '/devices/pci0000:00/0000:00:1c.2/0000:02:00.0/net/wlp2s0' ACTION=add
     DEVPATH=/devices/pci0000:00/0000:00:1c.2/0000:02:00.0/net/wlp2s0
     DEVTYPE=wlan ID_BUS=pci ID_MM_CANDIDATE=1 ID_MM_DEVICE_IGNORE=1
     ID_MODEL_FROM_DATABASE=Wireless 7265 (Dual Band Wireless-AC 7265)
     ID_MODEL_ID=0x095a ID_NET_NAME_PATH=wlp2s0
     ID_PCI_CLASS_FROM_DATABASE=Network controller
     ID_PCI_SUBCLASS_FROM_DATABASE=Network controller
     ID_VENDOR_FROM_DATABASE=Intel Corporation ID_VENDOR_ID=0x8086
     IFINDEX=2 INTERFACE=wlp2s0 SUBSYSTEM=net USEC_INITIALIZED=59063
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