Comment 7 for bug 1222838

nouveau didn't work at all with this:

[ 60.105618] nouveau W[ PFIFO][0000:01:00.0] unknown status 0x00000100
[ 60.116809] nouveau W[ PFIFO][0000:01:00.0] unknown status 0x00000100
[ 60.116862] nouveau W[ PFIFO][0000:01:00.0] unknown status 0x00000100
[ 60.116884] nouveau W[ PFIFO][0000:01:00.0] unknown status 0x00000100
[ 60.117698] nouveau E[ PBUS][0000:01:00.0] MMIO write of 0x00000000 FAULT at 0x418880 [ IBUS ]
[ 60.117701] divide error: 0000 [#1] SMP
[ 60.117737] Modules linked in: parport_pc ppdev rfcomm bnep x86_pkg_temp_thermal coretemp kvm_intel kvm joydev uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev e
rocode arc4 ath9k ath9k_common ath9k_hw psmouse snd_hda_codec_hdmi serio_raw snd_hda_codec_realtek rtsx_pci_ms ath lpc_ich mac80211 memstick snd_hda_intel snd_seq_midi snd_seq_midi_ev
wmidi btusb snd_hwdep snd_seq cfg80211 snd_pcm snd_seq_device mei_me snd_page_alloc snd_timer mei snd bluetooth soundcore mac_hid lp parport dm_crypt rtsx_pci_sdmmc crc32_pclmul ghash
ntel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd i915 mxm_wmi ttm r8169 rtsx_pci ahci mii libahci i2c_algo_bit drm_kms_helper drm video wmi
[ 60.117739] CPU: 0 PID: 1159 Comm: Xorg Tainted: G I 3.11.0-5-generic #11
[ 60.117740] Hardware name: Acer Aspire V5-573G/Dazzle_HW, BIOS V2.13 06/28/2013
[ 60.117741] task: ffff8802523bddc0 ti: ffff880251bb6000 task.ti: ffff880251bb6000
[ 60.117768] RIP: 0010:[<ffffffffa0258c90>] [<ffffffffa0258c90>] nve4_graph_init+0x250/0x7e0 [nouveau]
[ 60.117770] RSP: 0018:ffff880251bb7c10 EFLAGS: 00010246
[ 60.117771] RAX: 00000000007fffff RBX: 0000000000000000 RCX: 0000000000000000
[ 60.117772] RDX: 0000000000000000 RSI: ffffc90022403018 RDI: 0000000000000000
[ 60.117773] RBP: ffff880251bb7ce8 R08: 0000000000000007 R09: 0000000000000000
[ 60.117774] R10: 000000000000902d R11: ffff88024d888000 R12: ffff88024d888000
[ 60.117775] R13: ffffffffa02c2080 R14: 0000000000000000 R15: ffff88024d8880eb
[ 60.117776] FS: 00007f518b003980(0000) GS:ffff88025f200000(0000) knlGS:0000000000000000
[ 60.117777] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 60.117778] CR2: 00007f5187026510 CR3: 0000000250869000 CR4: 00000000001407f0
[ 60.117779] Stack:
[ 60.117782] ffff880251bb7c20 0000000000000000 0000000000000000 0000000000000000
[ 60.117783] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[ 60.117785] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[ 60.117786] Call Trace:
[ 60.117799] [<ffffffffa0203fad>] nouveau_object_inc+0xbd/0x1b0 [nouveau]
[ 60.117812] [<ffffffffa0204170>] nouveau_object_new+0xd0/0x230 [nouveau]
[ 60.117835] [<ffffffffa0265710>] nouveau_abi16_ioctl_grobj_alloc+0x70/0xe0 [nouveau]
[ 60.117845] [<ffffffffa0024212>] drm_ioctl+0x532/0x660 [drm]
[ 60.117851] [<ffffffff816fd6e4>] ? __do_page_fault+0x204/0x540
[ 60.117854] [<ffffffff811b90c5>] do_vfs_ioctl+0x2e5/0x4d0
[ 60.117856] [<ffffffff81097f69>] ? vtime_account_user+0x69/0x80
[ 60.117858] [<ffffffff811b9331>] SyS_ioctl+0x81/0xa0
[ 60.117861] [<ffffffff8170246f>] tracesys+0xe1/0xe6
[ 60.117885] 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 41 89 c5 49 8b 44 24 50 48 8d b0 80 89 41
[ 60.117904] RIP [<ffffffffa0258c90>] nve4_graph_init+0x250/0x7e0 [nouveau]
[ 60.117904] RSP <ffff880251bb7c10>
[ 60.753441] ---[ end trace 585ce66d07ed382e ]---

(note: i'm still running with the xorg-edgers packages)