Package: laptop-mode-tools Version: 1.66-1 Severity: normal I've found that laptop-mode-tools shuts off the ethernet interface any time I go on battery, even if it is in use. After some digging, I found the cause.
On at least my system (r8169 driver), any time ethtool is called to set the advertised link speed, it causes a momentary loss of carrier. This causes l-m-t to incorrectly think the link was not in use, and shut it off. The temporary loss of carrier is an annoying behavior, but not l-m-t's fault. It does seem like something that may happen with many NICs, however, not just mine, so it seems like l-m-t ought to take the possibility into account. On a related note, the invocation of ethtool doesn't work at all on at least that chipset. Apparently it is necessary to include the duplex setting as well. Not including the duplex setting causes ethtool to emit "Cannot advertise speed X" ... but still causes the momentary carrier loss. I don't know if this requirement/limitation is specific to the r8169 driver. Including the duplex setting allows it to actually restrict the link speed. -- System Information: Debian Release: jessie/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.16-3-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages laptop-mode-tools depends on: ii lsb-base 4.1+Debian13 ii psmisc 22.21-2 ii util-linux 2.25.1-5 Versions of packages laptop-mode-tools recommends: ii ethtool 1:3.16-1 ii hdparm 9.43-1.1 ii net-tools 1.60-26 ii python-qt4 4.11.2+dfsg-1 pn sdparm <none> ii udev 215-5+b1 ii wireless-tools 30~pre9-8 Versions of packages laptop-mode-tools suggests: ii acpid 1:2.0.23-1 -- no debconf information -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
