It could be related to nouveau: [ 368.033311] BUG: soft lockup - CPU#0 stuck for 23s! [Xorg:1013] [ 368.033324] Modules linked in: parport_pc ppdev lp parport rtc_generic btusb bnep mac_hid rfcomm bluetooth ext2 snd_powermac snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc apm_emu apm_emulation dm_crypt nouveau firewire_ohci sungem firewire_core crc_itu_t sungem_phy ttm drm_kms_helper usbhid hid drm uninorth_agp [ 368.033442] NIP: c0021bf4 LR: e9613330 CTR: c0021bcc [ 368.033453] REGS: e6d7f990 TRAP: 0901 Not tainted (3.2.0-19-powerpc-smp) [ 368.033461] MSR: 00009032 <EE,ME,IR,DR> CR: 28004442 XER: 20000000 [ 368.033485] TASK = e71a0720[1013] 'Xorg' THREAD: e6d7e000 CPU: 0 [ 368.033494] GPR00: e9613330 e6d7fa40 e71a0720 0500202c 907a7d00 00000000 26be3680 006013da [ 368.033518] GPR08: 00000008 c2400000 00000000 c0021bcc 28004448 [ 368.033550] NIP [c0021bf4] ioread32be+0x28/0x48 [ 368.033657] LR [e9613330] nouveau_wait_eq+0x80/0xc4 [nouveau] [ 368.033664] Call Trace: [ 368.033677] [e6d7fa40] [c2400000] 0xc2400000 (unreliable) [ 368.033710] [e6d7fa50] [e9613330] nouveau_wait_eq+0x80/0xc4 [nouveau] [ 368.033747] [e6d7fa80] [e9620ab4] nv_load_state_ext+0x8e4/0xf04 [nouveau] [ 368.033782] [e6d7fad0] [e962657c] nouveau_hw_load_state+0xb8/0x14c [nouveau] [ 368.033851] [e6d7faf0] [e96847f0] nv_crtc_commit+0x44/0x1a8 [nouveau] [ 368.033879] [e6d7fb20] [e9222400] drm_crtc_helper_set_mode+0x238/0x38c [drm_kms_helper] [ 368.033896] [e6d7fd10] [e9222dac] drm_crtc_helper_set_config+0x6dc/0x974 [drm_kms_helper] [ 368.033982] [e6d7fd90] [e91c4408] drm_mode_setcrtc+0x2f0/0x38c [drm] [ 368.034010] [e6d7fe10] [e91b3488] drm_ioctl+0x1d4/0x44c [drm] [ 368.034026] [e6d7fee0] [c017dcf0] do_vfs_ioctl+0xac/0x2f4 [ 368.034037] [e6d7ff10] [c017dfc4] sys_ioctl+0x8c/0xac [ 368.034052] [e6d7ff40] [c001974c] ret_from_syscall+0x0/0x38 [ 368.034066] --- Exception: c01 at 0x20285688 [ 368.034070] LR = 0x202855f0 [ 368.034076] Instruction dump: [ 368.034084] 7d615b78 4e800020 7c0802a6 90010004 60000000 9421fff0 7c0802a6 90010014 [ 368.034107] 93e1000c 7c3f0b78 7c0004ac 80630000 <0c030000> 4c00012c 397f0010 800b0004 [ 403.041308] INFO: rcu_sched detected stall on CPU 0 (t=15000 jiffies) [ 403.041320] Call Trace: [ 403.041334] [e6d7f760] [c000c16c] show_stack+0x110/0x1c8 (unreliable) [ 403.041356] [e6d7f7b0] [c063d158] dump_stack+0x2c/0x44 [ 403.041376] [e6d7f7c0] [c00d3f00] print_cpu_stall+0x50/0xb4 [ 403.041389] [e6d7f7e0] [c00d4cdc] __rcu_pending+0x104/0x240 [ 403.041402] [e6d7f800] [c00d60dc] rcu_check_callbacks+0x1f4/0x254 [ 403.041420] [e6d7f830] [c006cc70] update_process_times+0x4c/0x84 [ 403.041442] [e6d7f850] [c00995c4] tick_sched_timer+0x94/0x118 [ 403.041462] [e6d7f880] [c0087788] __run_hrtimer+0x84/0x220 [ 403.041475] [e6d7f8b0] [c0088d6c] hrtimer_interrupt+0x194/0x438 [ 403.041490] [e6d7f950] [c000f2e8] timer_interrupt+0x1e4/0x2f0 [ 403.041504] [e6d7f980] [c0019dfc] ret_from_except+0x0/0x14 [ 403.041572] --- Exception: 901 at ioread32be+0x28/0x48 [ 403.041577] LR = nouveau_wait_eq+0x80/0xc4 [nouveau] [ 403.041590] [e6d7fa40] [c2400000] 0xc2400000 (unreliable) [ 403.041623] [e6d7fa50] [e9613330] nouveau_wait_eq+0x80/0xc4 [nouveau] [ 403.041657] [e6d7fa80] [e9620ab4] nv_load_state_ext+0x8e4/0xf04 [nouveau] [ 403.041691] [e6d7fad0] [e962657c] nouveau_hw_load_state+0xb8/0x14c [nouveau] [ 403.041747] [e6d7faf0] [e96847f0] nv_crtc_commit+0x44/0x1a8 [nouveau] [ 403.041770] [e6d7fb20] [e9222400] drm_crtc_helper_set_mode+0x238/0x38c [drm_kms_helper] [ 403.041787] [e6d7fd10] [e9222dac] drm_crtc_helper_set_config+0x6dc/0x974 [drm_kms_helper] [ 403.041844] [e6d7fd90] [e91c4408] drm_mode_setcrtc+0x2f0/0x38c [drm] [ 403.041872] [e6d7fe10] [e91b3488] drm_ioctl+0x1d4/0x44c [drm] [ 403.041885] [e6d7fee0] [c017dcf0] do_vfs_ioctl+0xac/0x2f4 [ 403.041896] [e6d7ff10] [c017dfc4] sys_ioctl+0x8c/0xac [ 403.041908] [e6d7ff40] [c001974c] ret_from_syscall+0x0/0x38 [ 403.041921] --- Exception: c01 at 0x20285688 [ 403.041925] LR = 0x202855f0 [ 441.242204] [drm] nouveau 0000:00:10.0: Calling LVDS script 2: [ 441.242221] [drm] nouveau 0000:00:10.0: 0x1072: Parsing digital output script table [ 441.258150] [drm] nouveau 0000:00:10.0: Setting dpms mode 0 on lvds encoder (output 0) [ 441.258161] [drm] nouveau 0000:00:10.0: Calling LVDS script 5: [ 441.258170] [drm] nouveau 0000:00:10.0: 0x1109: Parsing digital output script table [ 441.258206] [drm] nouveau 0000:00:10.0: Output LVDS-1 is running on CRTC 1 using output C [ 452.485330] [drm] nouveau 0000:00:10.0: Load detected on output B [ 503.380296] ondemand governor failed, too long transition latency of HW, fallback to performance governor [ 533.605434] [drm] nouveau 0000:00:10.0: Load detected on output B [ 533.769436] [drm] nouveau 0000:00:10.0: Load detected on output B
** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/958749 Title: BUG: soft lockup - CPU#0 stuck for 22s! [Xorg:1199] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/958749/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
