My update (after a reboot caused by a crashed hibernation attempt at uptime ~8 days): juhaj@rigel > uptime 00:18:27 up 14 days, 6:50, 9 users, load average: 0.00, 0.03, 0.05 juhaj@rigel > cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.2.0-1-amd64 root=/dev/mapper/system-root ro quiet usbcore.autosuspend=1 video=intelfb:1440x900M@60 pcie_aspm=off juhaj@rigel > grep . /sys/module/iwlwifi/parameters/* /sys/module/iwlwifi/parameters/11n_disable:0 /sys/module/iwlwifi/parameters/ack_check:N /sys/module/iwlwifi/parameters/amsdu_size_8K:1 /sys/module/iwlwifi/parameters/antenna_coupling:0 /sys/module/iwlwifi/parameters/auto_agg:Y /sys/module/iwlwifi/parameters/bt_ch_inhibition:Y /sys/module/iwlwifi/parameters/bt_coex_active:Y /sys/module/iwlwifi/parameters/fw_restart:1 /sys/module/iwlwifi/parameters/led_mode:0 /sys/module/iwlwifi/parameters/no_sleep_autoadjust:Y /sys/module/iwlwifi/parameters/plcp_check:Y /sys/module/iwlwifi/parameters/power_level:0 /sys/module/iwlwifi/parameters/power_save:N /sys/module/iwlwifi/parameters/queues_num:0 /sys/module/iwlwifi/parameters/swcrypto:0 /sys/module/iwlwifi/parameters/ucode_alternative:1 /sys/module/iwlwifi/parameters/wd_disable:0 (I think these are all defaults.) rigel kernel: [1073316.734468] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S juhaj@rigel > uname -a Linux rigel 3.2.0-1-amd64 #1 SMP Fri Feb 17 05:17:36 UTC 2012 x86_64 GNU/Linux There have been TWO changes since I last had problems: 1. pcie_aspm=off 2. re-seating the iwlwifi mini-pci card in its socket I am starting to believe I am in the clear here, but I am not yet convinced since the root cause is still unknown. In any case, thanks for all of you for helping hunt this down. Dafydd: I think you might want to try pcie_asmp=off next Cheers, Juha -- ----------------------------------------------- | Juha Jäykkä, juhaj@iki.fi | | http://www.maths.leeds.ac.uk/~juhaj | -----------------------------------------------
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