This happens just by disabling wireless once it's active, so it's easier to verify. Here's the log:
[ 46.732182] eth0: no IPv6 routers present [ 49.568008] ondemand governor failed, too long transition latency of HW, fallback to performance governor [ 86.389403] wlan0: authenticate with AP 00:1f:9e:8d:ab:50 [ 86.391480] wlan0: authenticated [ 86.391493] wlan0: associate with AP 00:1f:9e:8d:ab:50 [ 86.394154] wlan0: RX AssocResp from 00:1f:9e:8d:ab:50 (capab=0x421 status=0 aid=1) [ 86.394163] wlan0: associated [ 86.400101] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 86.435719] cfg80211: Calling CRDA for country: US [ 86.512979] cfg80211: Current regulatory domain updated by AP to: US [ 86.512992] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 86.512997] (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm) [ 96.780199] wlan0: no IPv6 routers present [ 100.419999] ondemand governor failed, too long transition latency of HW, fallback to performance governor [ 129.672373] wlan0: authenticate with AP 00:1f:9e:8d:b6:a0 [ 129.673663] wlan0: authenticated [ 129.673674] wlan0: associate with AP 00:1f:9e:8d:b6:a0 [ 129.696196] wlan0: RX ReassocResp from 00:1f:9e:8d:b6:a0 (capab=0x421 status=0 aid=13) [ 129.696207] wlan0: associated [ 155.232787] wlan0: disassociating by local choice (reason=3) [ 155.258139] wlan0: deauthenticating by local choice (reason=3) [ 156.816231] Machine check in kernel mode. [ 156.816244] Caused by (from SRR1=149030): Transfer error ack signal [ 156.816301] Oops: Machine check, sig: 7 [#1] [ 156.816306] PowerMac [ 156.816308] Modules linked in: binfmt_misc radeon drm af_packet ppdev lp parport rfcomm sco bridge stp bnep l2cap ipv6 cpufreq_ondemand cpufreq_conservative cpufreq_powersave cpufreq_userspace cpufreq_stats therm_adt746x sbp2 apm_emu apm_emulation snd_aoa_codec_tas snd_aoa_fabric_layout snd_aoa snd_aoa_i2sbus snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event btusb snd_seq bluetooth arc4 snd_timer ecb snd_seq_device joydev b43 snd soundcore evdev appletouch mac80211 pmac_zilog ams input_polldev pcmcia cfg80211 yenta_socket snd_aoa_soundbus rfkill rsrc_nonstatic pcmcia_core serial_core rtc_generic ext3 jbd mbcache hid_apple ohci1394 ieee1394 sungem sungem_phy usbhid hid ssb uninorth_agp agpgart windfarm_core [ 156.816385] NIP: c001d644 LR: f20b7a64 CTR: c001d63c [ 156.816391] REGS: ef87fe10 TRAP: 0200 Not tainted (2.6.31-6-powerpc) [ 156.816394] MSR: 00149030 <EE,ME,IR,DR> CR: 42000082 XER: 00000000 [ 156.816404] TASK = ef84bd40[5] 'events/0' THREAD: ef87e000 [ 156.816407] GPR00: ef8df450 ef87fec0 ef84bd40 00000000 0000049a 00010000 00000002 00000010 [ 156.816415] GPR08: ee509f50 f20ba714 00000000 c001d63c 22000082 00000000 0021b960 0021b9e4 [ 156.816423] GPR16: 0021b93c 0021bb28 002413b0 0021b860 ef84bd40 ee91e900 c04cd7cc c04cd804 [ 156.816431] GPR24: c0510f40 ee9579c0 ef8df400 00000001 ee9571a0 f2537808 0000049a ef8df400 [ 156.816453] NIP [c001d644] ioread16+0x8/0x18 [ 156.816476] LR [f20b7a64] ssb_pci_read16+0x34/0x70 [ssb] [ 156.816480] Call Trace: [ 156.816488] [ef87fec0] [f20b5d50] ssb_device_enable+0xe8/0x128 [ssb] (unreliable) [ 156.816528] [ef87fed0] [f2735030] b43_is_hw_radio_enabled+0x60/0x74 [b43] [ 156.816539] [ef87fee0] [f27350a4] b43_rfkill_poll+0x60/0x17c [b43] [ 156.816589] [ef87ff10] [f2656e68] ieee80211_rfkill_poll+0x34/0x44 [mac80211] [ 156.816623] [ef87ff20] [f258d020] cfg80211_rfkill_poll+0x20/0x30 [cfg80211] [ 156.816639] [ef87ff30] [f2537834] rfkill_poll+0x2c/0x54 [rfkill] [ 156.816652] [ef87ff40] [c005ce78] run_workqueue+0x100/0x1d8 [ 156.816658] [ef87ff80] [c005cff8] worker_thread+0xa8/0x134 [ 156.816665] [ef87ffc0] [c00620fc] kthread+0x80/0x84 [ 156.816671] [ef87fff0] [c001799c] kernel_thread+0x4c/0x68 [ 156.816674] Instruction dump: [ 156.816677] 7c0803a6 83e1000c 38210010 4e800020 7c0004ac 88630000 0c030000 4c00012c [ 156.816685] 5463063e 4e800020 7c0004ac 7c601e2c <0c030000> 4c00012c 5463043e 4e800020 [ 156.816697] ---[ end trace 76c52639410e87e0 ]--- I'll follow the other steps you've outlined and report back in the next couple days. -- b43 panic https://bugs.launchpad.net/bugs/430225 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
