I've been googling/reading lots of information, found similar problems, then discovered kernel OOPS with intel_ips module:
1. [ 5.985278] Pid: 408, comm: modprobe Not tainted 2.6.35-22-generic #35-Ubuntu K52F/K52F 2. [ 5.985370] EIP: 0060:[<f81da452>] EFLAGS: 00010286 CPU: 1 3. [ 5.985433] EIP is at ips_detect_cpu+0x62/0x180 [intel_ips] 4. [ 5.985498] EAX: 00c800c8 EBX: 00000000 ECX: 00c800c8 EDX: 00000000 5. [ 5.985562] ESI: f5bbfe04 EDI: f69ae500 EBP: f5bbfe14 ESP: f5bbfde4 6. [ 5.985626] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 7. [ 5.985688] Process modprobe (pid: 408, ti=f5bbe000 task=f5ac7230 task.ti=f5bbe000) 8. [ 5.985778] Stack: 9. [ 5.986569] f81dbefc f81dbe9e f70b6c00 f5bbfe14 c020c441 f5bbfe08 c05c79e9 f81daeef 10. [ 5.986810] <0> 00000000 f69ae500 f7168000 fffffff4 f5bbfe4c f81daf2a c027165d f5bbfe4c 11. [ 5.987123] <0> c0270c07 f5bbfe4c c027100a f5bbfe38 f7168000 f7168060 c036bb3e f7168000 12. [ 5.987485] Call Trace: 13. [ 5.987548] [<c020c441>] ? kmem_cache_alloc_notrace+0x91/0xb0 14. [ 5.987617] [<c05c79e9>] ? mutex_lock+0x19/0x40 15. [ 5.987677] [<f81daeef>] ? ips_probe+0x1f/0x690 [intel_ips] 16. [ 5.987744] [<f81daf2a>] ? ips_probe+0x5a/0x690 [intel_ips] 17. [ 5.987809] [<c027165d>] ? sysfs_add_one+0x1d/0x110 18. [ 5.987872] [<c0270c07>] ? sysfs_new_dirent+0x67/0x100 19. [ 5.987934] [<c027100a>] ? sysfs_addrm_finish+0x1a/0xb0 20. [ 5.988001] [<c036bb3e>] ? pci_match_device+0xbe/0xd0 21. [ 5.988062] [<c036b9d3>] ? local_pci_probe+0x13/0x20 22. [ 5.988125] [<c036c988>] ? pci_device_probe+0x68/0x90 23. [ 5.988188] [<c0400540>] ? really_probe+0x50/0x150 24. [ 5.988253] [<c0407bb7>] ? pm_runtime_barrier+0x57/0xb0 25. [ 5.988316] [<c040067c>] ? driver_probe_device+0x3c/0x60 26. [ 5.988379] [<c0400721>] ? __driver_attach+0x81/0x90 27. [ 5.988441] [<c03ffb43>] ? bus_for_each_dev+0x53/0x80 28. [ 5.988504] [<c040040e>] ? driver_attach+0x1e/0x20 29. [ 5.988565] [<c04006a0>] ? __driver_attach+0x0/0x90 30. [ 5.988625] [<c03ffdd5>] ? bus_add_driver+0xd5/0x280 31. [ 5.988686] [<c036c8c0>] ? pci_device_remove+0x0/0x40 32. [ 5.988751] [<c0400a1a>] ? driver_register+0x6a/0x130 33. [ 5.988812] [<c036cbc5>] ? __pci_register_driver+0x45/0xb0 34. [ 5.988878] [<f81df017>] ? ips_init+0x17/0x19 [intel_ips] 35. [ 5.988942] [<c0101132>] ? do_one_initcall+0x32/0x1a0 36. [ 5.989006] [<f81df000>] ? ips_init+0x0/0x19 [intel_ips] 37. [ 5.989074] [<c0180c2b>] ? sys_init_module+0x9b/0x1e0 38. [ 5.989140] [<c0218fa2>] ? sys_write+0x42/0x70 39. [ 5.989201] [<c05c9114>] ? syscall_call+0x7/0xb 40. [ 5.989262] Code: 1e f5 c7 90 ba f5 bd 1d f8 b8 0c 52 81 c0 e8 a6 f6 17 c8 bb 80 c4 1d f8 85 c0 74 35 b8 ac 01 00 00 89 f2 e8 b1 1e f5 c7 90 89 c1 <8b> 53 08 c1 e1 12 c1 e 41. 9 15 69 c1 e8 03 00 00 39 c2 75 75 89 d8 42. [ 5.991035] EIP: [<f81da452>] ips_detect_cpu+0x62/0x180 [intel_ips] SS:ESP 0068:f5bbfde4 43. [ 5.991180] CR2: 0000000000000008 44. [ 5.991307] ---[ end trace 4126c52517df4ed9 ]--- Then i added blacklist intel_ips to the local modprobe config and problem has been solved. Actually, it's a workaround rather then solution. Shall i post here harware info, logs, etc? -- X doesn't work with i915 driver https://bugs.launchpad.net/bugs/665097 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