From bfd0bbc84bc76dc492b27ad975a623e63bfd11bb Mon Sep 17 00:00:00 2001 From: Leah Rowe Date: Thu, 17 Nov 2016 19:20:51 +0000 Subject: docs/misc: add note about e1000 driver issue --- docs/misc/index.html | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'docs/misc') diff --git a/docs/misc/index.html b/docs/misc/index.html index ead1d6a8..be54aab7 100644 --- a/docs/misc/index.html +++ b/docs/misc/index.html @@ -27,6 +27,7 @@
  • Finetune backlight control on intel gpu’s
  • Get EDID: Find out the name (model) of your LCD panel
  • How to enable EHCI debugging on the BeagleBone Black
    • +
  • e1000e driver trouble shooting (Intel NICs)
    • @@ -265,6 +266,42 @@ WantedBy=multi-user.target +
    + +

    e1000e driver trouble shooting (Intel NICs)

    +

    + Example error, ¿may happen on weird and complex routing schemes(citation needed for cause): +

    +
    +e1000e 0000:00:19.0 enp0s25: Detected Hardware Unit Hang
+
    +

    + Possible workaround, tested by Nazara: Disable C-STATES.
    + + NOTE: this also disables power management, because disabling C-States + means that your CPU will now be running at full capacity (and therefore + using more power) non-stop, which will drain battery life if this is a laptop. + If power usage is a concern, then you should not use this. + (we're also not sure whether this workaround is appropriate) + +

    +

    + To disable c-states, do this in GNU+Linux:
    + + for i in /sys/devices/system/cpu/cpu/cpuidle/state/disable; do echo 1 > $i; done + +

    +

    + You can reproduce this issue more easily by sending lots of traffic across + subnets on the same interface (NIC). +

    +

    + More information, including logs, can be found on + this page. +

    + +
    +

    USB keyboard wakeup on GM45 laptops

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