https://bugzilla.novell.com/show_bug.cgi?id=637183 https://bugzilla.novell.com/show_bug.cgi?id=637183#c5 hongdan liu <hdliu@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hdliu@novell.com --- Comment #5 from hongdan liu <hdliu@novell.com> 2010-10-08 03:56:49 UTC --- (In reply to comment #4)
LANG=C cat /sys/class/net/wlan0/carrier cat: /sys/class/net/wlan0/carrier: Invalid argument
wlan0 is currently disabled via the kill switch. Could that cause this problem?
Yes. A device is not able to indicate carrier accurately when the device is not currently running. So you will get an -EINVAL until the device is brought up. The reason is that most drivers don't even probe the link or negotiate link speed and flow control until the device is brought up. Many don't even power up the PHY when the device is down, in order to save power. If you disable eth0, /sys/class/net/eth0/carrier can't be read either. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.