I've been seeing similar problems with my "Intel Corporation Centrino Ultimate-N 6300".
Like others, the problems seemed to start around 2.6.39. Like othes, the card flakes out a day or two after booting, and a reboot always fixes the problem. Occasionally it stays working for longer. Like others, I've added RAM. But as far as I can recall the upgrade happened well before any poblems started appearing. Any ASPM settings are at their default. I'll try wd_disable=1 as a workaround for now. Meenakshi, will the patch you mentioned be applied in 3.3? Below is a syslog excerpt from around the time of failue. It seems to support Meenakshi's suggestion that it's related to the queue getting stuck. Mar 12 13:13:21 localhost kernel: [48188.303709] iwlwifi 0000:02:00.0: Queue 4 stuck for 2000 ms. Mar 12 13:13:21 localhost kernel: [48188.303714] iwlwifi 0000:02:00.0: Current read_ptr 112 write_ptr 115 Mar 12 13:13:21 localhost kernel: [48188.303716] iwlwifi 0000:02:00.0: On demand firmware reload Mar 12 13:13:21 localhost kernel: [48188.303733] iwlwifi 0000:02:00.0: Command REPLY_QOS_PARAM failed: FW Error Mar 12 13:13:21 localhost kernel: [48188.303737] iwlwifi 0000:02:00.0: Failed to update QoS Mar 12 13:13:21 localhost kernel: [48188.303743] iwlwifi 0000:02:00.0: fw recovery, no hcmd send Mar 12 13:13:21 localhost kernel: [48188.303746] iwlwifi 0000:02:00.0: Error sending REPLY_RXON: enqueue_hcmd failed: -5 Mar 12 13:13:21 localhost kernel: [48188.303747] iwlwifi 0000:02:00.0: Error clearing ASSOC_MSK on BSS (-5) Mar 12 13:13:22 localhost kernel: [48188.322330] iwlwifi 0000:02:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF Mar 12 13:13:22 localhost kernel: [48188.340903] iwlwifi 0000:02:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF ... Mar 12 13:13:22 localhost kernel: [48188.675439] ieee80211 phy0: Hardware restart was requested Mar 12 13:13:22 localhost wpa_supplicant[1472]: CTRL-EVENT-DISCONNECTED bssid=00:50:7f:cb:4b:58 reason=4 Mar 12 13:13:22 localhost kernel: [48188.742610] ieee80211 phy0: failed to remove key (1, ff:ff:ff:ff:ff:ff) from hardware (-2) ... Mar 12 13:13:28 localhost kernel: [48194.404414] iwlwifi 0000:02:00.0: Could not load the INST uCode section Mar 12 13:13:28 localhost kernel: [48194.404423] iwlwifi 0000:02:00.0: Failed to start RT ucode: -110 ... Mar 12 13:13:28 localhost kernel: [48194.776198] iwlwifi 0000:02:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF Mar 12 13:13:28 localhost wpa_supplicant[1472]: Failed to initiate AP scan. Mar 12 13:13:28 localhost NetworkManager[1405]: <info> (wlan0): roamed from BSSID 00:50:7F:CB:4B:58 (GUM51C) to (none) ((none)) Mar 12 13:13:28 localhost kernel: [48194.776271] iwlwifi 0000:02:00.0: Unable to initialize device. Mar 12 13:13:28 localhost kernel: [48194.776294] iwlwifi 0000:02:00.0: Request scan called when driver not ready. I get some kind of OOPS but I'm guessing this is just because the driver can't communicate with the card when the module is being unloaded: Mar 12 13:15:04 localhost kernel: [48290.674358] ------------[ cut here ]------------ Mar 12 13:15:04 localhost kernel: [48290.674383] WARNING: at /build/buildd-linux-2.6_3.2.9-1-amd64-KTPapN/linux-2.6-3.2.9/debian/build/source_amd64_none/drivers/net/wireless/iwlwifi/iwl-core.c:1330 iwlagn_mac_remove_interface+0x48/0xdd [iwlwifi]() Mar 12 13:15:04 localhost kernel: [48290.674388] Hardware name: 3249CTO Mar 12 13:15:04 localhost kernel: [48290.674390] Modules linked in: uvcvideo videodev v4l2_compat_ioctl32 media snd_usb_audio snd_usbmidi_lib pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) acpi_cpufreq mperf cpufreq_stats cpufreq_userspace cpu Mar 12 13:15:04 localhost kernel: sync_memcpy async_tx raid1 raid0 multipath linear md_mod sd_mod crc_t10dif usbhid hid ahci libahci ehci_hcd libata scsi_mod usbcore thermal thermal_sys usb_common e1000e [last unloaded: scsi_wait_scan] Mar 12 13:15:04 localhost kernel: [48290.674508] Pid: 1405, comm: NetworkManager Tainted: G O 3.2.0-2-amd64 #1 Mar 12 13:15:04 localhost kernel: [48290.674511] Call Trace: Mar 12 13:15:04 localhost kernel: [48290.674520] [<ffffffff81046879>] ? warn_slowpath_common+0x78/0x8c Mar 12 13:15:04 localhost kernel: [48290.674531] [<ffffffffa03ea9af>] ? iwlagn_mac_remove_interface+0x48/0xdd [iwlwifi] Mar 12 13:15:04 localhost kernel: [48290.674546] [<ffffffffa0346eaf>] ? ieee80211_do_stop+0x30d/0x45e [mac80211] Mar 12 13:15:04 localhost kernel: [48290.674552] [<ffffffff8104bd6b>] ? _local_bh_enable_ip.isra.11+0x1e/0x88 Mar 12 13:15:04 localhost kernel: [48290.674564] [<ffffffffa0347012>] ? ieee80211_stop+0x12/0x16 [mac80211] Mar 12 13:15:04 localhost kernel: [48290.674577] [<ffffffffa0347000>] ? ieee80211_do_stop+0x45e/0x45e [mac80211] Mar 12 13:15:04 localhost kernel: [48290.674582] [<ffffffff81280e9e>] ? __dev_close_many+0x84/0xb0 Mar 12 13:15:04 localhost kernel: [48290.674586] [<ffffffff81280efa>] ? __dev_close+0x30/0x47 Mar 12 13:15:04 localhost kernel: [48290.674592] [<ffffffff812852ef>] ? dev_set_rx_mode+0x1d/0x29 Mar 12 13:15:04 localhost kernel: [48290.674596] [<ffffffff8128557a>] ? __dev_change_flags+0x9d/0x118 Mar 12 13:15:04 localhost kernel: [48290.674600] [<ffffffff81285658>] ? dev_change_flags+0x12/0x42 Mar 12 13:15:04 localhost kernel: [48290.674605] [<ffffffff8128f2e4>] ? do_setlink+0x287/0x728 Mar 12 13:15:04 localhost kernel: [48290.674611] [<ffffffff8129017a>] ? rtnl_newlink+0x24e/0x468 Mar 12 13:15:04 localhost kernel: [48290.674615] [<ffffffff8128ffd8>] ? rtnl_newlink+0xac/0x468 Mar 12 13:15:04 localhost kernel: [48290.674623] [<ffffffff810eb0d6>] ? kmem_cache_alloc_node_trace+0x96/0x10a Mar 12 13:15:04 localhost kernel: [48290.674629] [<ffffffff81340c00>] ? mutex_lock+0xd/0x2d Mar 12 13:15:04 localhost kernel: [48290.674634] [<ffffffff81070761>] ? arch_local_irq_save+0x11/0x17 Mar 12 13:15:04 localhost kernel: [48290.674638] [<ffffffff8128fb00>] ? __rtnl_unlock+0x6/0xc Mar 12 13:15:04 localhost kernel: [48290.674642] [<ffffffff8128fb06>] ? __rtnl_unlock+0xc/0xc Mar 12 13:15:04 localhost kernel: [48290.674647] [<ffffffff812a35a5>] ? netlink_rcv_skb+0x36/0x7a Mar 12 13:15:04 localhost kernel: [48290.674651] [<ffffffff8128ef19>] ? rtnetlink_rcv+0x1f/0x28 Mar 12 13:15:04 localhost kernel: [48290.674655] [<ffffffff812a3151>] ? netlink_unicast+0xe6/0x14e Mar 12 13:15:04 localhost kernel: [48290.674660] [<ffffffff812a33b5>] ? netlink_sendmsg+0x1fc/0x237 Mar 12 13:15:04 localhost kernel: [48290.674668] [<ffffffff8127314e>] ? sock_sendmsg+0xc1/0xde Mar 12 13:15:04 localhost kernel: [48290.674672] [<ffffffff8127302d>] ? sock_recvmsg+0xcd/0xec Mar 12 13:15:04 localhost kernel: [48290.674676] [<ffffffff8127314e>] ? sock_sendmsg+0xc1/0xde Mar 12 13:15:04 localhost kernel: [48290.674681] [<ffffffff8134041f>] ? _cond_resched+0x7/0x1c Mar 12 13:15:04 localhost kernel: [48290.674686] [<ffffffff8103642f>] ? should_resched+0x5/0x23 Mar 12 13:15:04 localhost kernel: [48290.674690] [<ffffffff8134041f>] ? _cond_resched+0x7/0x1c Mar 12 13:15:04 localhost kernel: [48290.674695] [<ffffffff8127c46c>] ? copy_from_user+0x18/0x30 Mar 12 13:15:04 localhost kernel: [48290.674699] [<ffffffff8103642f>] ? should_resched+0x5/0x23 Mar 12 13:15:04 localhost kernel: [48290.674703] [<ffffffff812733e3>] ? __sys_sendmsg+0x1e8/0x288 Mar 12 13:15:04 localhost kernel: [48290.674710] [<ffffffff8104dea3>] ? __do_proc_dointvec.isra.4+0x28e/0x2c1 Mar 12 13:15:04 localhost kernel: [48290.674716] [<ffffffff810fa4eb>] ? fget_light+0x5f/0x73 Mar 12 13:15:04 localhost kernel: [48290.674720] [<ffffffff812749f1>] ? sys_sendto+0x108/0x137 Mar 12 13:15:04 localhost kernel: [48290.674727] [<ffffffff8100d755>] ? __switch_to+0x1e5/0x258 Mar 12 13:15:04 localhost kernel: [48290.674733] [<ffffffff8103981a>] ? finish_task_switch+0x4e/0xba Mar 12 13:15:04 localhost kernel: [48290.674737] [<ffffffff810fa4eb>] ? fget_light+0x5f/0x73 Mar 12 13:15:04 localhost kernel: [48290.674741] [<ffffffff81274d16>] ? sys_sendmsg+0x39/0x58 Mar 12 13:15:04 localhost kernel: [48290.674748] [<ffffffff813466d2>] ? system_call_fastpath+0x16/0x1b Mar 12 13:15:04 localhost kernel: [48290.674751] ---[ end trace 1e1c30c0d4f76f0d ]--- Mar 12 13:15:04 localhost kernel: [48290.674756] iwlwifi 0000:02:00.0: ctx->vif = (null), vif = ffff8801b1c72df0 Mar 12 13:15:04 localhost kernel: [48290.674761] iwlwifi 0000:02:00.0: ID = 0: ctx = ffff8801b1a834b0 ctx->vif = (null) Daf -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". 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