Added Ben and the Debian Kernel Team On Saturday 16 June 2012 07:29 AM, Guillem Jover wrote: >> On Friday 15 June 2012 09:27 PM, Guillem Jover wrote: >>> > > Since some time now (I only sat down to track it down pretty recently, >>> > > but this has going on for probably a year or more), laptop-mode-tools >>> > > has broken the wired network (e1000e) whenever I unplug the laptop from >>> > > the wall power. >>> > > >>> > > The culprit is BATT_THROTTLE_ETHERNET=1 in >>> > > «/etc/laptop-mode/conf.d/ethernet.conf». >>> > > >>> > > This turns the working ethernet device from this state: >>> > > >>> > > ,--- >>> > > # ethtool eth0 >>> > > Settings for eth0: >>> > > Supported ports: [ TP ] >>> > > Supported link modes: 10baseT/Half 10ba >>> > > 100baseT/Half 100baseT/Full >>> > > 1000baseT/Full >>> > > Supported pause frame use: No >>> > > Supports auto-negotiation: Yes >>> > > Advertised link modes: 10baseT/Half 10ba >>> > > 100baseT/Half 100baseT/Full >>> > > 1000baseT/Full >>> > > Advertised pause frame use: No >>> > > Advertised auto-negotiation: Yes >>> > > Speed: 100Mb/s >>> > > Duplex: Full >>> > > Port: Twisted Pair >>> > > PHYAD: 2 >>> > > Transceiver: internal >>> > > Auto-negotiation: on >>> > > MDI-X: on >>> > > Supports Wake-on: pumbg >>> > > Wake-on: g >>> > > Current message level: 0x00000001 (1) >>> > > drv >>> > > Link detected: yes >>> > > `--- >>> > > >>> > > To this non-working state: >>> > > >>> > > ,--- >>> > > # ethtool eth0 >>> > > Settings for eth0: >>> > > Supported ports: [ TP ] >>> > > Supported link modes: 10baseT/Half 10ba >>> > > 100baseT/Half 100baseT/Full >>> > > 1000baseT/Full >>> > > Supported pause frame use: No >>> > > Supports auto-negotiation: Yes >>> > > Advertised link modes: 10baseT/Half 10ba >>> > > 100baseT/Half 100baseT/Full >>> > > 1000baseT/Full >>> > > Advertised pause frame use: No >>> > > Advertised auto-negotiation: Yes >>> > > Speed: Unknown! >>> > > Duplex: Unknown! (255) >>> > > Port: Twisted Pair >>> > > PHYAD: 2 >>> > > Transceiver: internal >>> > > Auto-negotiation: on >>> > > MDI-X: Unknown >>> > > Supports Wake-on: pumbg >>> > > Wake-on: d >>> > > Current message level: 0x00000001 (1) >>> > > drv >>> > > Link detected: no >>> > > `--- >>> > > >>> > > If I set BATT_THROTTLE_ETHERNET to 0, then everything works as before. >>> > > >>> > > I don't think this setting should be enabled by default if it might >>> > > cause this type of breakage, even if it ends up being a driver >>> > > problem. >> > >> > This is the first report on this behavior. >> > From your logs, it shows that when switched to battery, nothing is set >> > correct. Neither the speed, nor the Link. >> > >> > Could you please set DEBUG=1 in the ethernet module only, and then see >> > if it can provide more information on what is failing? >> > >> > e1000e must be a common driver supporting multiple Intel chipsets. I >> > have no problem setting the default to 0, but like I said, this is the >> > first time I've heard of this behavior. > I've tracked it further down to «ethtool -s eth0 autoneg off», which > totally messes up the network device. I've tested this with 3.2, 3.3 > and 3.4 kernels, all are affected. I'll try to check later on with > earlier kernels to see if something changes. > > It might be related to the PCIe controller, ACPI setup, the PM settings, > or the driver itself, I've got some error messages on dmesg about the > driver being unable to read from PHY registers and also about Hardware > Errors, but then I've seen several instances of that on google, so I > don't think it's really a hardware problem, as those have changed over > time with different kernels. Since this happens with 3.2 also, I have pulled in the kernel team. Perhaps they have some information. -- Ritesh Raj Sarraf | http://people.debian.org/~rrs Debian - The Universal Operating System
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