syslog shows its clearly a driver issue (not nm). Maybe test latest drivers in jaunty or intrepid-proposed.
from syslog posted: Dec 6 00:54:32 brain2 NetworkManager: <debug> [1228542872.118124] periodic_update(): Roamed from BSSID 00:14:D1:3E:9E:F4 (mcajnet2) to (none) ((none)) Dec 6 00:54:38 brain2 NetworkManager: <debug> [1228542878.118114] periodic_update(): Roamed from BSSID (none) ((none)) to 00:14:D1:3E:9E:F4 (mcajnet2) Dec 6 00:56:32 brain2 NetworkManager: <debug> [1228542992.195025] periodic_update(): Roamed from BSSID 00:14:D1:3E:9E:F4 (mcajnet2) to (none) ((none)) Dec 6 00:56:38 brain2 NetworkManager: <debug> [1228542998.202469] periodic_update(): Roamed from BSSID (none) ((none)) to 00:14:D1:3E:9E:F4 (mcajnet2) Dec 6 00:58:32 brain2 NetworkManager: <debug> [1228543112.286427] periodic_update(): Roamed from BSSID 00:14:D1:3E:9E:F4 (mcajnet2) to (none) ((none)) Dec 6 00:58:38 brain2 NetworkManager: <debug> [1228543118.290030] periodic_update(): Roamed from BSSID (none) ((none)) to 00:14:D1:3E:9E:F4 (mcajnet2) Dec 6 00:59:08 brain2 kernel: [ 4041.023245] ------------[ cut here ]------------ Dec 6 00:59:08 brain2 kernel: [ 4041.023260] WARNING: at /build/buildd/linux-backports-modules-2.6.27-2.6.27/debian/build/build-generic/compat-wireless-2.6/net/mac80211/rx.c:2200 __lbm_cw_ieee80211_rx+0x19f/0x600 [lbm_cw_mac80211]() Dec 6 00:59:08 brain2 kernel: [ 4041.023268] Modules linked in: af_packet i915 drm binfmt_misc rfcomm sco bridge stp bnep l2cap bluetooth ppdev ipv6 acpi_cpufreq cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative cpufreq_ondemand freq_table container pci_slot sbs sbshc iptable_filter ip_tables x_tables sbp2 parport_pc lp parport joydev pcmcia snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm uvcvideo thinkpad_acpi snd_seq_dummy compat_ioctl32 ath_pci wlan ath_hal(P) videodev yenta_socket rsrc_nonstatic rfkill snd_seq_oss v4l1_compat arc4 pcmcia_core psmouse nvram evdev ecb serio_raw iTCO_wdt crypto_blkcipher pcspkr snd_seq_midi iTCO_vendor_support snd_rawmidi ath5k lbm_cw_mac80211 snd_seq_midi_event lbm_cw_cfg80211 snd_seq led_class battery ac video intel_agp output snd_timer snd_seq_device wmi button snd agpgart shpchp pci_hotplug soundcore snd_page_alloc ext3 jbd mbcache sr_mod cdrom ata_generic usbhid hid sd_mod crc_t10dif sg ata_piix ahci pata_acpi ohci1394 ieee1394 libata scsi_mod ehci_h Dec 6 00:59:08 brain2 kernel: d uhci_hcd usbcore e1000e dock thermal processor fan fuse vesafb fbcon tileblit font bitblit softcursor Dec 6 00:59:08 brain2 kernel: [ 4041.023487] Pid: 0, comm: swapper Tainted: P W 2.6.27-9-generic #1 Dec 6 00:59:08 brain2 kernel: [ 4041.023494] [<c037c4b6>] ? printk+0x1d/0x1f Dec 6 00:59:08 brain2 kernel: [ 4041.023509] [<c0131de9>] warn_on_slowpath+0x59/0x90 Dec 6 00:59:08 brain2 kernel: [ 4041.023523] [<c0118e38>] ? read_hpet+0x8/0x20 Dec 6 00:59:08 brain2 kernel: [ 4041.023533] [<c014e63b>] ? getnstimeofday+0x4b/0x100 Dec 6 00:59:08 brain2 kernel: [ 4041.023544] [<c0136976>] ? set_normalized_timespec+0x16/0x90 Dec 6 00:59:08 brain2 kernel: [ 4041.023554] [<c037e05e>] ? account_scheduler_latency+0xe/0x220 Dec 6 00:59:08 brain2 kernel: [ 4041.023565] [<c0123454>] ? __enqueue_entity+0xd4/0x100 Dec 6 00:59:08 brain2 kernel: [ 4041.023574] [<c0124aba>] ? enqueue_entity+0xda/0x2f0 Dec 6 00:59:08 brain2 kernel: [ 4041.023585] [<f8cd59af>] __lbm_cw_ieee80211_rx+0x19f/0x600 [lbm_cw_mac80211] Dec 6 00:59:08 brain2 kernel: [ 4041.023614] [<c012a708>] ? enqueue_task_fair+0x48/0x50 Dec 6 00:59:08 brain2 kernel: [ 4041.023624] [<c02eae1c>] ? skb_put+0xc/0xa0 Dec 6 00:59:08 brain2 kernel: [ 4041.023635] [<c0120f97>] ? enqueue_task+0x57/0x70 Dec 6 00:59:08 brain2 kernel: [ 4041.023647] [<f8c8ac83>] ath5k_tasklet_rx+0x2e3/0x550 [ath5k] Dec 6 00:59:08 brain2 kernel: [ 4041.023664] [<c01136c0>] ? lapic_next_event+0x20/0x30 Dec 6 00:59:08 brain2 kernel: [ 4041.023674] [<c014e63b>] ? getnstimeofday+0x4b/0x100 Dec 6 00:59:08 brain2 kernel: [ 4041.023686] [<c0137258>] tasklet_action+0x78/0x100 Dec 6 00:59:08 brain2 kernel: [ 4041.023694] [<c0137682>] __do_softirq+0x92/0x120 Dec 6 00:59:08 brain2 kernel: [ 4041.023702] [<c013776d>] do_softirq+0x5d/0x60 Dec 6 00:59:08 brain2 kernel: [ 4041.023710] [<c01378e5>] irq_exit+0x55/0x90 Dec 6 00:59:08 brain2 kernel: [ 4041.023717] [<c0106c1a>] do_IRQ+0x4a/0x80 Dec 6 00:59:08 brain2 kernel: [ 4041.023726] [<c0105003>] common_interrupt+0x23/0x30 Dec 6 00:59:08 brain2 kernel: [ 4041.023735] [<c01700d8>] ? __audit_mq_getsetattr+0x68/0xb0 Dec 6 00:59:08 brain2 kernel: [ 4041.023747] [<f899d800>] ? acpi_idle_enter_bm+0x268/0x2b7 [processor] Dec 6 00:59:08 brain2 kernel: [ 4041.023766] [<c02dbf7b>] cpuidle_idle_call+0x7b/0xd0 Dec 6 00:59:08 brain2 kernel: [ 4041.023775] [<c010288d>] cpu_idle+0x7d/0x140 Dec 6 00:59:08 brain2 kernel: [ 4041.023782] [<c037a711>] start_secondary+0x9d/0xcc Dec 6 00:59:08 brain2 kernel: [ 4041.023793] ======================= Dec 6 00:59:08 brain2 kernel: [ 4041.023798] ---[ end trace 6d64d49b0d28393f ]---
syslog shows its clearly a driver issue (not nm). Maybe test latest drivers in jaunty or intrepid-proposed.
from syslog posted: buildd/ linux-backports -modules- 2.6.27- 2.6.27/ debian/ build/build- generic/ compat- wireless- 2.6/net/ mac80211/ rx.c:2200 __lbm_cw_ ieee80211_ rx+0x19f/ 0x600 [lbm_cw_mac80211]() conservative cpufreq_ondemand freq_table container pci_slot sbs sbshc iptable_filter ip_tables x_tables sbp2 parport_pc lp parport joydev pcmcia snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm uvcvideo thinkpad_acpi snd_seq_dummy compat_ioctl32 ath_pci wlan ath_hal(P) videodev yenta_socket rsrc_nonstatic rfkill snd_seq_oss v4l1_compat arc4 pcmcia_core psmouse nvram evdev ecb serio_raw iTCO_wdt crypto_blkcipher pcspkr snd_seq_midi iTCO_vendor_support snd_rawmidi ath5k lbm_cw_mac80211 snd_seq_midi_event lbm_cw_cfg80211 snd_seq led_class battery ac video intel_agp output snd_timer snd_seq_device wmi button snd agpgart shpchp pci_hotplug soundcore snd_page_alloc ext3 jbd mbcache sr_mod cdrom ata_generic usbhid hid sd_mod crc_t10dif sg ata_piix ahci pata_acpi ohci1394 ieee1394 libata scsi_mod ehci_h slowpath+ 0x59/0x90 0x4b/0x100 timespec+ 0x16/0x90 scheduler_ latency+ 0xe/0x220 entity+ 0xd4/0x100 entity+ 0xda/0x2f0 ieee80211_ rx+0x19f/ 0x600 [lbm_cw_mac80211] task_fair+ 0x48/0x50 task+0x57/ 0x70 rx+0x2e3/ 0x550 [ath5k] event+0x20/ 0x30 0x4b/0x100 action+ 0x78/0x100 0x92/0x120 0x5d/0x60 interrupt+ 0x23/0x30 mq_getsetattr+ 0x68/0xb0 enter_bm+ 0x268/0x2b7 [processor] idle_call+ 0x7b/0xd0 +0x9d/0xcc ======= ======= ==
Dec 6 00:54:32 brain2 NetworkManager: <debug> [1228542872.118124] periodic_update(): Roamed from BSSID 00:14:D1:3E:9E:F4 (mcajnet2) to (none) ((none))
Dec 6 00:54:38 brain2 NetworkManager: <debug> [1228542878.118114] periodic_update(): Roamed from BSSID (none) ((none)) to 00:14:D1:3E:9E:F4 (mcajnet2)
Dec 6 00:56:32 brain2 NetworkManager: <debug> [1228542992.195025] periodic_update(): Roamed from BSSID 00:14:D1:3E:9E:F4 (mcajnet2) to (none) ((none))
Dec 6 00:56:38 brain2 NetworkManager: <debug> [1228542998.202469] periodic_update(): Roamed from BSSID (none) ((none)) to 00:14:D1:3E:9E:F4 (mcajnet2)
Dec 6 00:58:32 brain2 NetworkManager: <debug> [1228543112.286427] periodic_update(): Roamed from BSSID 00:14:D1:3E:9E:F4 (mcajnet2) to (none) ((none))
Dec 6 00:58:38 brain2 NetworkManager: <debug> [1228543118.290030] periodic_update(): Roamed from BSSID (none) ((none)) to 00:14:D1:3E:9E:F4 (mcajnet2)
Dec 6 00:59:08 brain2 kernel: [ 4041.023245] ------------[ cut here ]------------
Dec 6 00:59:08 brain2 kernel: [ 4041.023260] WARNING: at /build/
Dec 6 00:59:08 brain2 kernel: [ 4041.023268] Modules linked in: af_packet i915 drm binfmt_misc rfcomm sco bridge stp bnep l2cap bluetooth ppdev ipv6 acpi_cpufreq cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_
Dec 6 00:59:08 brain2 kernel: d uhci_hcd usbcore e1000e dock thermal processor fan fuse vesafb fbcon tileblit font bitblit softcursor
Dec 6 00:59:08 brain2 kernel: [ 4041.023487] Pid: 0, comm: swapper Tainted: P W 2.6.27-9-generic #1
Dec 6 00:59:08 brain2 kernel: [ 4041.023494] [<c037c4b6>] ? printk+0x1d/0x1f
Dec 6 00:59:08 brain2 kernel: [ 4041.023509] [<c0131de9>] warn_on_
Dec 6 00:59:08 brain2 kernel: [ 4041.023523] [<c0118e38>] ? read_hpet+0x8/0x20
Dec 6 00:59:08 brain2 kernel: [ 4041.023533] [<c014e63b>] ? getnstimeofday+
Dec 6 00:59:08 brain2 kernel: [ 4041.023544] [<c0136976>] ? set_normalized_
Dec 6 00:59:08 brain2 kernel: [ 4041.023554] [<c037e05e>] ? account_
Dec 6 00:59:08 brain2 kernel: [ 4041.023565] [<c0123454>] ? __enqueue_
Dec 6 00:59:08 brain2 kernel: [ 4041.023574] [<c0124aba>] ? enqueue_
Dec 6 00:59:08 brain2 kernel: [ 4041.023585] [<f8cd59af>] __lbm_cw_
Dec 6 00:59:08 brain2 kernel: [ 4041.023614] [<c012a708>] ? enqueue_
Dec 6 00:59:08 brain2 kernel: [ 4041.023624] [<c02eae1c>] ? skb_put+0xc/0xa0
Dec 6 00:59:08 brain2 kernel: [ 4041.023635] [<c0120f97>] ? enqueue_
Dec 6 00:59:08 brain2 kernel: [ 4041.023647] [<f8c8ac83>] ath5k_tasklet_
Dec 6 00:59:08 brain2 kernel: [ 4041.023664] [<c01136c0>] ? lapic_next_
Dec 6 00:59:08 brain2 kernel: [ 4041.023674] [<c014e63b>] ? getnstimeofday+
Dec 6 00:59:08 brain2 kernel: [ 4041.023686] [<c0137258>] tasklet_
Dec 6 00:59:08 brain2 kernel: [ 4041.023694] [<c0137682>] __do_softirq+
Dec 6 00:59:08 brain2 kernel: [ 4041.023702] [<c013776d>] do_softirq+
Dec 6 00:59:08 brain2 kernel: [ 4041.023710] [<c01378e5>] irq_exit+0x55/0x90
Dec 6 00:59:08 brain2 kernel: [ 4041.023717] [<c0106c1a>] do_IRQ+0x4a/0x80
Dec 6 00:59:08 brain2 kernel: [ 4041.023726] [<c0105003>] common_
Dec 6 00:59:08 brain2 kernel: [ 4041.023735] [<c01700d8>] ? __audit_
Dec 6 00:59:08 brain2 kernel: [ 4041.023747] [<f899d800>] ? acpi_idle_
Dec 6 00:59:08 brain2 kernel: [ 4041.023766] [<c02dbf7b>] cpuidle_
Dec 6 00:59:08 brain2 kernel: [ 4041.023775] [<c010288d>] cpu_idle+0x7d/0x140
Dec 6 00:59:08 brain2 kernel: [ 4041.023782] [<c037a711>] start_secondary
Dec 6 00:59:08 brain2 kernel: [ 4041.023793] =======
Dec 6 00:59:08 brain2 kernel: [ 4041.023798] ---[ end trace 6d64d49b0d28393f ]---