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Thread: Network Manager no longer seeing devices after reboot

  1. #1
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    Network Manager no longer seeing devices after reboot

    I just loaded 10.10 on an Acer Aspire One D255. When I installed Ubuntu, network manager loaded and I was able to use both the wired and wireless cards. After I used update manager, the kernel was upgraded, and I also added some wireless applications (RutilT WLAN Manager, SWScanner, and WiFi Radar). Upon reboot, the network manager doesn't work, and it cannot find any of the devices. However, running lspci provides two of the following:

    Ethernet controller: Atheros Communications AR8152 v1.1 Fast Ethernet (rev c1)

    Network controller: Intel Corporation Centrino Wireless-N 1000

    FYI, uname -a yields:

    Linux AOD255 2.6.35-23-generic #41-Ubuntu SMP .... UTC 2010 i686 GNU/Linux


    I have searched this site and found one potential remedy (that didn't work) namely removing the interfaces file in /etc/network and restarting network-manager, presumably hoping that a new (clean) interfaces file will be autogenerated. No joy. The odd thing is that the process says it starts, and gives a PID, but when you ps aux you don't find the PID of the process that allegedly started. The network icon on the top panel of Unity (remember, this is a netbook running the netbook-specific version of Ubuntu) says: "No network devices available".

    I suspect network-manager is running because ps aux | grep network-manager returns a result (in my case, the PID was 8755).

    ifconfig returns entries for eth0, lo and wlan0. None of which were running (except for loopback lo). Running "ifup wlan0" returns "Ignoring unknown interface wlan0=wlan0." The /etc/network/interfaces file is short and sweet:

    auto lo
    iface lo inet loopback


    Clearly, however, something is wrong with network-manager. Anyone have any ideas. I'm stumped.

  2. #2
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    Re: Network Manager no longer seeing devices after reboot

    Will you post the output of the following terminal commands:

    Code:
    lspci
    lspci -k
    lsusb
    lsmod
    sudo lshw -C network
    I found a dual boot workaround (if you have Vista or Win7 on another partition) for a different model of Intel Centrino wifi around post # 5 onward on this thread:

    http://ubuntuforums.org/showthread.php?t=1529993

    Edit: it sounds like the new kernel upgrade is missing one or more networking modules (an extremely common, if not guaranteed problem in Ubuntu updating).
    Last edited by northd_tech; December 5th, 2010 at 09:28 PM.

  3. #3
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    Re: Network Manager no longer seeing devices after reboot

    Have you tried this ? ie edit /etc/NetworkManager/nm-system-settings.conf using
    Code:
    gksudo gedit /etc/NetworkManager/nm-system-settings.conf
    and set
    Code:
    managed=true
    Then restart.
    Q :If you go to /etc/NetworkManager do you see a folder system-connections? Pl check using gksudo nautilus /etc/NetworkManager
    Last edited by dineshs; December 6th, 2010 at 06:03 AM.
    Registered linux user #518022

  4. #4
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    Re: Network Manager no longer seeing devices after reboot

    I tried what you suggested and did find a folder "system-connections" after restarting network-manager.

    What does that signify?

  5. #5
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    Re: Network Manager no longer seeing devices after reboot

    Here is the result of lspci:

    Code:
    00:00.0 Host bridge: Intel Corporation N10 Family DMI Bridge (rev 02)
    00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller (rev 02)
    00:02.1 Display controller: Intel Corporation N10 Family Integrated Graphics Controller (rev 02)
    00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
    00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
    00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02)
    00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02)
    00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
    00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
    00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
    00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
    00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
    00:1f.0 ISA bridge: Intel Corporation NM10 Family LPC Controller (rev 02)
    00:1f.2 SATA controller: Intel Corporation N10/ICH7 Family SATA AHCI Controller (rev 02)
    00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
    01:00.0 Ethernet controller: Atheros Communications AR8152 v1.1 Fast Ethernet (rev c1)
    02:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000
    Here is the result of lspci -k

    Code:
    00:00.0 Host bridge: Intel Corporation N10 Family DMI Bridge (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: agpgart-intel
    	Kernel modules: intel-agp
    00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: i915
    	Kernel modules: i915
    00:02.1 Display controller: Intel Corporation N10 Family Integrated Graphics Controller (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: HDA Intel
    	Kernel modules: snd-hda-intel
    00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
    	Kernel driver in use: pcieport
    	Kernel modules: shpchp
    00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02)
    	Kernel driver in use: pcieport
    	Kernel modules: shpchp
    00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: uhci_hcd
    00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: uhci_hcd
    00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: uhci_hcd
    00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: uhci_hcd
    00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: ehci_hcd
    00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
    00:1f.0 ISA bridge: Intel Corporation NM10 Family LPC Controller (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    00:1f.2 SATA controller: Intel Corporation N10/ICH7 Family SATA AHCI Controller (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: ahci
    	Kernel modules: ahci
    00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel modules: i2c-i801
    01:00.0 Ethernet controller: Atheros Communications AR8152 v1.1 Fast Ethernet (rev c1)
    	Subsystem: Acer Incorporated [ALI] Device 0349
    	Kernel driver in use: atl1c
    	Kernel modules: atl1c
    02:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000
    	Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN
    	Kernel driver in use: iwlagn
    	Kernel modules: iwlagn
    Here is the output from lsusb:

    Code:
    Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 001 Device 003: ID 0402:9665 ALi Corp. 
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Here is the output from lsmod:

    Code:
    Module                  Size  Used by
    nls_iso8859_1           3261  0 
    nls_cp437               4931  0 
    vfat                    9201  0 
    fat                    48240  1 vfat
    usb_storage            40172  0 
    parport_pc             26058  0 
    ppdev                   5556  0 
    snd_hda_codec_realtek   217971  1 
    binfmt_misc             6599  1 
    arc4                    1165  2 
    snd_hda_intel          22107  4 
    snd_hda_codec          87552  2 snd_hda_codec_realtek,snd_hda_intel
    snd_hwdep               5040  1 snd_hda_codec
    iwlagn                178948  0 
    snd_pcm                71475  2 snd_hda_intel,snd_hda_codec
    i915                  292683  7 
    snd_seq_midi            4588  0 
    snd_rawmidi            17783  1 snd_seq_midi
    iwlcore               127415  1 iwlagn
    snd_seq_midi_event      6047  1 snd_seq_midi
    snd_seq                47174  2 snd_seq_midi,snd_seq_midi_event
    drm_kms_helper         30168  1 i915
    mac80211              231541  2 iwlagn,iwlcore
    snd_timer              19067  2 snd_pcm,snd_seq
    snd_seq_device          5744  3 snd_seq_midi,snd_rawmidi,snd_seq
    drm                   168054  8 i915,drm_kms_helper
    uvcvideo               55847  0 
    psmouse                59033  0 
    intel_agp              26424  2 i915
    cfg80211              144470  3 iwlagn,iwlcore,mac80211
    snd                    49006  17 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
    videodev               43098  1 uvcvideo
    serio_raw               4022  0 
    v4l1_compat            13359  2 uvcvideo,videodev
    soundcore                880  1 snd
    agpgart                32011  2 drm,intel_agp
    snd_page_alloc          7120  2 snd_hda_intel,snd_pcm
    i2c_algo_bit            5168  1 i915
    video                  18712  1 i915
    output                  1883  1 video
    lp                      7342  0 
    parport                31492  3 parport_pc,ppdev,lp
    usbhid                 36882  0 
    hid                    67742  1 usbhid
    ahci                   19013  0 
    libahci                21667  3 ahci
    atl1c                  29949  0
    ... and here is the output from lshw:

    Code:
      *-network
           description: Ethernet interface
           product: AR8152 v1.1 Fast Ethernet
           vendor: Atheros Communications
           physical id: 0
           bus info: pci@0000:01:00.0
           logical name: eth0
           version: c1
           serial: 1c:75:08:16:fa:50
           capacity: 100MB/s
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
           configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.0.2-NAPI firmware=N/A latency=0 link=no multicast=yes port=twisted pair
           resources: irq:46 memory:57000000-5703ffff ioport:5000(size=128)
      *-network
           description: Wireless interface
           product: Centrino Wireless-N 1000
           vendor: Intel Corporation
           physical id: 0
           bus info: pci@0000:02:00.0
           logical name: wlan0
           version: 00
           serial: 00:26:c7:a3:79:fa
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
           configuration: broadcast=yes driver=iwlagn driverversion=2.6.35-23-generic firmware=128.50.3.1 build 13488 latency=0 link=no multicast=yes wireless=IEEE 802.11bg
           resources: irq:43 memory:56000000-56001fff
    Thanks much.

  6. #6
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    Re: Network Manager no longer seeing devices after reboot

    After editing the file and rebooting does NM work?
    I tried what you suggested and did find a folder "system-connections" after restarting network-manager.
    What does that signify?
    All the connections managed by NM will be available in this folder in seperate files.I just wanted to clarify.Can you confirm using
    Code:
    gksudo nautilus /etc/NetworkManager/system-connections
    Last edited by dineshs; December 6th, 2010 at 06:14 AM.
    Registered linux user #518022

  7. #7
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    Re: Network Manager no longer seeing devices after reboot

    Thanks for the link to the other thread. I tried both of two things:

    1) Rebooted to Windows 7 and toggled the wireless control (<Fn> F3 on this Acer netbook).

    2) After shutting down Windows 7, I unplugged the battery, hoping that this might cure the bad firmware setting for the wireless toggle.

    ... upon rebooting back into Linux, the wireless light is on (albeit amber, not blue like the other indicator lights). That is something because the light was extinguished earlier.

    Unfortunately, as far as network manager goes, there is still no joy. The results are unchanged. "No network devices available".

  8. #8
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    Re: Network Manager no longer seeing devices after reboot

    I was able to gksudo nautilus into /etc/NetworkManager/system-connections. But no files were present. Empty folder.

  9. #9
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    Re: Network Manager no longer seeing devices after reboot

    If no one comes up with a better solution I think you can try deleting system-connections then restart (Hope NM is ticked in system-preferences startup applications)
    Or
    Add the connections one by one
    Registered linux user #518022

  10. #10
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    Re: Network Manager no longer seeing devices after reboot

    Dinesh: I tried deleting the directory and restarting network-manager. Nothing changed. The new folder wasn't even created.

    Sadly, I'm thinking of reinstalling. Alternatively, I considered getting an extra Gig of RAM (making a 2 GB box) and installing a standard version of Ubuntu. I wasn't too keen on Unity anyway. My kids would rather have Gnome, and so would I. This particular netbook has a dual Atom processor, so it may be able to take the load, especially if it has more RAM.

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