+netdev On Tue, Feb 19, 2013 at 08:41:47AM +0100, Alexander Stein wrote: > On Monday 18 February 2013 09:49:16, Greg KH wrote: > > > Invalid argument - /sys/devices/virtual/net/lo/speed > > > Invalid argument - /sys/devices/virtual/net/lo/duplex > > This is even true for ethernet devices which do not have a link currently or non-ethernet devices (e.g. CAN). > > LANG=C cat /sys/class/net/enp1s8/speed > > cat: /sys/class/net/enp1s8/speed: Invalid argument > > ethtool enp1s8 | grep -A1 Speed > > Speed: Unknown! > > Duplex: Unknown! (255) > > LANG=C cat /sys/class/net/can0/speed > > cat: /sys/class/net/can0/speed: Invalid argument > > Regards, > Alexander > -- balbi