Re: nm can't recognize my devices anymore after 2.6.34 zen kernel

[Dan Williams <dcbw redhat com>]

On Mon, 2010-07-12 at 02:32 +0000, Gary Trakhman wrote:
> yup:
> lrwxrwxrwx 1 root root     0 Jul 11 19:40 driver ->
> ../../../../bus/pci/drivers/ath5k
> 
> and
> lrwxrwxrwx 1 root root     0 Jul 11 19:40 driver ->
> ../../../../bus/pci/drivers/r8169

NM gets the driver from udev attributes; you could use this program:

http://cgit.freedesktop.org/ModemManager/ModemManager/tree/test/lsudev.c

to see what we get for the device with the updated kernel.  You'd build
it like so:

gcc -o lsudev `pkg-config --libs --cflags gudev-1.0 glib-2.0` lsudev.c

and run it like so:

./lsudev net

On my 2.6.33.6 system, it gives me:

------------------------------------------------------
Name:     eth0
Type:     (null)
Subsys:   net
Number:   0
Path:     /sys/devices/pci0000:00/0000:00:19.0/net/eth0
Driver:   (null)
Action:   (null)
Seq Num:  0
Dev File: (null)

Properties:
  UDEV_LOG:                3
  DEVPATH:                 /devices/pci0000:00/0000:00:19.0/net/eth0
  INTERFACE:               eth0
  IFINDEX:                 2
  SUBSYSTEM:               net
  ID_VENDOR_FROM_DATABASE: Intel Corporation
  ID_MODEL_FROM_DATABASE:  82567LM Gigabit Network Connection
  ID_BUS:                  pci
  ID_VENDOR_ID:            0x8086
  ID_MODEL_ID:             0x10f5

    ------------------------------------------------------
    Name:     0000:00:19.0
    Type:     (null)
    Subsys:   pci
    Number:   0
    Path:     /sys/devices/pci0000:00/0000:00:19.0
    Driver:   e1000e
    Action:   (null)
    Seq Num:  0
    Dev File: (null)
    
    Properties:
      UDEV_LOG:      3
      DEVPATH:       /devices/pci0000:00/0000:00:19.0
      DRIVER:        e1000e
      PCI_CLASS:     20000
      PCI_ID:        8086:10F5
      PCI_SUBSYS_ID: 103C:30E1
      PCI_SLOT_NAME: 0000:00:19.0
      MODALIAS:      pci:v00008086d000010F5sv0000103Csd000030E1bc02sc00i00
      SUBSYSTEM:     pci

The DRIVER and 'Driver:' things there are what we care about.  I'm
really curious what your system says...

Dan


> 
> 
> On Mon, Jul 12, 2010 at 2:21 AM, Andrey Borzenkov <arvidjaar gmail com> wrote:
> > On Monday 12 of July 2010 04:33:18 Gary Trakhman wrote:
> >> Trying to hunt this down, nm can't figure out my devices, but I can
> >> use them manually just fine.  What should I look for or what's wrong?
> >> there are lots of files in /sys/class/net/...
> >>
> >>
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <info>
> >> NetworkManager (version 0.8.0.999) is starting...
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <info> trying to
> >> start the modem manager...
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <info> Loaded
> >> plugin keyfile: (c) 2007 - 2008 Red Hat, Inc.  To report bugs please
> >> use the NetworkManager mailing list.
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <info> found WiFi
> >> radio killswitch rfkill0 (at /sys/class/rfkill/rfkill0) (driver
> >> <unknown>)
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <info> WiFi
> >> enabled by radio killswitch; enabled by state file
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <info> WWAN
> >> enabled by radio killswitch; enabled by state file
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <info> WiMAX
> >> enabled by radio killswitch; enabled by state file
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <info> Networking
> >> is enabled by state file
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <warn>
> >> /sys/class/net/eth0: couldn't determine device driver; ignoring...
> >> Jul 11 19:48:20 gary-laptop NetworkManager[13622]: <warn>
> >> /sys/class/net/wlan0: couldn't determine device driver; ignoring...
> >
> > I would look under /sys/class/net/<interface>/device/ - it is expected
> > to have driver symlink, like
> >
> > {pts/3}% ll /sys/class/net/eth0/device/driver
> > lrwxrwxrwx 1 root root 0 2010-07-12 06:17
> > /sys/class/net/eth0/device/driver -> ../../../../bus/pci/drivers/tg3/
> >
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