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[Christopher Yee Mon <christopher.yeemon@xxxxxxxxx>]

I tried booting into the LiveCDs for both Ubuntu 12.04LTS and the daily
LiveCD for Trusty and both were able to boot into the system in Legacy
Mode

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https://bugs.launchpad.net/bugs/1260623

Title:
  Failed to boot LiveCD

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Environment:
  Ubuntu 13.10 x64 LiveCD

  Summary: I tried to boot the LiveCD and LiveUSB made using Unetbootin,
  with the UEFI set to Legacy Mode. It's not booting. I'm getting a
  kernel panic detailed below

  So I hit escape on the loading screen when booting the Ubuntu LiveCD
  in Legacy mode and it showed the stack trace off the kernel panic
  during boot it is the following below. It seems to indicate a problem
  with the nouveau kernel module during LiveCD boot.

  Screenshot located at http://i.stack.imgur.com/wLRvq.jpg

  [   26.154100] divide error: 000 [#1] SMP
  [   26.154179] nouveau E[    PBUS][000:01:00.0] MMIO write of 0x00000000 FAULT at 0x418880 [ IBUS ]
  [   26.155172] Modules linked in: btrfs(F) raid6_pq(F) libcrc32c(F) zlib_deflate(F) xor(F) x86_pkg_temp_thermal coretemp kvm_intel(F) kvm(F) crct10dif_pclmul(F) crc32_pclmul(F) ghash_clmulni_intel(F) joydev(F) snd_hda_codec_hdmi aesni_intel(F) snd_hda_codec_realtek aes_x86_64(F) lrw(F) gf128mul(F) glue_helper(F) msi_wmi snd_hda_intel ablk_helper(F) cryptd(F) snd_hda_codec sparse_keymap snd_hwdep(F) snd_pcm(F) snd_page_alloc(F) snd_seq_midi(F) snd_seq_midi_event(F) arc4(F) dm_multipath(F) rts5139(C) snd_rawmidi(F) rt18723ae rtl_pci rtlwifi scsi_dh(F) mac80211 snd_seq(F) snd_seq_device(F) snd_timer(F) cfg80211 snd(F) soundcore(F) btusb mei_me lpc_ich mei psmouse(F) serio_raw(F) mac_hid intel_rst microcode(F) parport_pc(F) ppdev(F) lp(F) parport(F) bnep rfcomm bluetooth squashfs(F) overlayfs(F) nls_iso8859_1(F) dm_mirror(F) dm_region_hash(F) dm_log(F) usb_storage(F) nouveau i915 ttm i2c_algo_bit ahci(F) drm_kms_helper libahci(F) drm alx mdio mxm_wmi wmi video(F)
  [   26.158381] CPU: 5 PID: 2346 Comm: Xorg Tainted: GF        C   3.11.0-12-generic #19-Ubuntu
  [   26.159108] Hardware name: Micro-Star International Co., Ltd. CR42 2M/GE40 2OC/MS-1492, BIOS E1492IMS.10N 11/14/2013
  [   26.159840] task: ffff880221358000 ti: ffff880222810000 task.ti: ffff880222810000
  [   26.160556] RIP: 0010:[<ffffffffa0206cb0>]  [<ffffffffa0206cb0>] nve4_graph_init+0x250/0x7e0 [nouveau]
  [   26.161322] RSP: 0018:ffff880222811c10  EFLAGS: 00010246
  [   26.162069] RAX: 00000000007fffff RBX: 0000000000000000 RCX: 0000000000000000
  [   26.162808] RDX: 0000000000000000 RSI: ffffc90016303018 RDI: 0000000000000000
  [   26.163563] RBP: ffff880222811ce8 R08: 0000000000000007 R09: 0000000000000000
  [   26.164314] R10: 000000000000902d R11: ffff88021e234000 R12: ffff88021e234000
  [   26.165055] R13: ffffffffa0270080 R14: 0000000000000000 R15: ffff88021e2340eb
  [   26.165794] FS:  00007f277c762980(0000) GS:ffff88022fb40000(0000) knlGS:0000000000000000
  [   26.166549] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [   26.167300] CR2: 00007f27760d2f50 CR3: 0000000222fa9000 CR4: 00000000001407e0
  [   26.168013] Stack:
  [   26.168756]  ffff880222811c20 0000000000000000 0000000000000000 0000000000000000
  [   26.169521]  0000000000000000 0000000000000000 0000000000000000 0000000000000000
  [   26.170280]  0000000000000000 0000000000000000 0000000000000000 0000000000000000
  [   26.171032] Call Trace:
  [   26.171805]  [<ffffffffa01b1fad>] nouveau_object_inc+0xbd/0x1b0 [nouveau]
  [   26.172574]  [<ffffffffa01b2170>] nouveau_object_new+0xbd/0x230 [nouveau]
  [   26.173353]  [<ffffffffa0213730>] nouveau_abi16_ioctl_grobj_alloc+0x70/0xe0 [nouveau]
  [   26.174136]  [<ffffffffa0030212>] drm_ioctl+0x532/0x660 [drm]
  [   26.174920]  [<ffffffff816f06a4>] ? __do_page_fault+0x204/0x540
  [   26.175727]  [<ffffffff8116e9d5>] ? do_mmap_pgoff+0x305/0x3c0
  [   26.176522]  [<ffffffff811b8ba5>] do_vfs_ioctl+0x2e5/0x4d0
  [   26.177317]  [<ffffffff811b8e11>] SyS_ioctl+0x81/0xa0
  [   26.178116]  [<ffffffff816f521d>] system_call_fastpath+0x1a/0x1f
  [   26.178923] Code: 7d 11 89 f8 c1 f8 03 48 98 44 8b 84 85 30 ff ff ff eb a0 8b bd 30 ff ff ff 8d 83 ff ff 7f 00 45 31 f6 4d 8d bc 24 eb 00 00 00 99 <f7> fb bb 14 09 50 00 8d b0 80 89 41
  [   26.180694] RIP  [<ffffffffa0206cb0>] nve4_graph_init+0x250/0x7e0 [nouveau]
  [   26.181584]  RSP <ffff880222811c10>

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