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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1404242

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: trusty

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https://bugs.launchpad.net/bugs/1404242

Title:
  Radeon crash on 14.04 LTS stops Xorg from starting

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Kernel message:

  [   31.778064] BUG: unable to handle kernel paging request at ffffec2000000900
  [   31.778105] IP: [<ffffffff811a2046>] kfree+0x56/0x140
  [   31.778133] PGD 0 
  [   31.778145] Oops: 0000 [#1] SMP 
  [   31.778165] Modules linked in: snd_hrtimer pci_stub vboxpci(OX) vboxnetadp(OX) vboxnetflt(OX) vboxdrv(OX) bnep rfcomm bluetooth ip6t_REJECT xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables radeon snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec gpio_ich snd_hwdep kvm_intel snd_pcm snd_page_alloc ttm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device kvm snd_timer drm_kms_helper snd drm soundcore i2c_algo_bit serio_raw x38_edac lpc_ich edac_core mac_hid binfmt_misc parport_pc ppdev vhba(OX) coretemp it87 hwmon_vid lp parport pata_acpi hid_generic usbhid hid raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor firewire_ohci firewire_core crc_itu_t ahci raid6_pq r8169 pata_jmicron mii libahci raid1 raid0 multipath floppy linear
  [   31.778734] CPU: 0 PID: 2402 Comm: Xorg Tainted: G           OX 3.13.0-43-generic #72-Ubuntu
  [   31.778769] Hardware name: Gigabyte Technology Co., Ltd. X48-DQ6/X48-DQ6, BIOS F6 02/29/2008
  [   31.778805] task: ffff8802229e6000 ti: ffff8802216da000 task.ti: ffff8802216da000
  [   31.778835] RIP: 0010:[<ffffffff811a2046>]  [<ffffffff811a2046>] kfree+0x56/0x140
  [   31.778869] RSP: 0018:ffff8802216dba68  EFLAGS: 00010286
  [   31.778892] RAX: ffffec2000000900 RBX: 0000100000024414 RCX: 0000000000000000
  [   31.778922] RDX: ffffea0000000000 RSI: 0000000000005f78 RDI: 0000100000024414
  [   31.778951] RBP: ffff8802216dba80 R08: 0000000000000013 R09: 0000000000000012
  [   31.778980] R10: ffffea000880a380 R11: ffffffffa0405bc1 R12: 0000000000000000
  [   31.779009] R13: ffffffffa04623b6 R14: 0000000000000000 R15: ffff88003655e400
  [   31.779039] FS:  00007f229d9019c0(0000) GS:ffff88022fc00000(0000) knlGS:0000000000000000
  [   31.779072] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [   31.779096] CR2: ffffec2000000900 CR3: 00000002209d8000 CR4: 00000000000007f0
  [   31.779125] Stack:
  [   31.779135]  ffff8800cae30000 0000000000000000 ffff8800cae30000 ffff8802216dbb38
  [   31.779174]  ffffffffa04623b6 ffff8802216dbab0 ffff880200007048 000070440000712c
  [   31.779211]  ffff8802209ee000 0000100000024414 0000188000024414 0000180000028488
  [   31.779249] Call Trace:
  [   31.779289]  [<ffffffffa04623b6>] evergreen_hdmi_setmode+0x776/0x960 [radeon]
  [   31.779334]  [<ffffffffa01b855e>] ? drm_detect_hdmi_monitor+0x6e/0xb0 [drm]
  [   31.779385]  [<ffffffffa0469788>] radeon_atom_encoder_mode_set+0x158/0x2d0 [radeon]
  [   31.779421]  [<ffffffffa022da98>] drm_crtc_helper_set_mode+0x498/0x500 [drm_kms_helper]
  [   31.779470]  [<ffffffffa0413d35>] radeon_property_change_mode.isra.1+0x35/0x40 [radeon]
  [   31.779519]  [<ffffffffa0413ece>] radeon_connector_set_property+0x18e/0x300 [radeon]
  [   31.779562]  [<ffffffffa01b5732>] drm_mode_obj_set_property_ioctl+0x142/0x340 [drm]
  [   31.779604]  [<ffffffffa01b5960>] drm_mode_connector_property_set_ioctl+0x30/0x40 [drm]
  [   31.779644]  [<ffffffffa01a4c22>] drm_ioctl+0x502/0x630 [drm]
  [   31.779672]  [<ffffffff8172cc94>] ? __do_page_fault+0x204/0x560
  [   31.779707]  [<ffffffffa03d50fe>] radeon_drm_ioctl+0x4e/0x90 [radeon]
  [   31.779736]  [<ffffffff811d0e90>] do_vfs_ioctl+0x2e0/0x4c0
  [   31.779762]  [<ffffffff811c01b1>] ? __sb_end_write+0x31/0x60
  [   31.779787]  [<ffffffff811d10f1>] SyS_ioctl+0x81/0xa0
  [   31.779810]  [<ffffffff817316ad>] system_call_fastpath+0x1a/0x1f
  [   31.779836] Code: 00 00 00 80 ff 77 00 00 48 01 d8 48 0f 42 15 e2 2f a7 00 48 01 d0 48 ba 00 00 00 00 00 ea ff ff 48 c1 e8 0c 48 c1 e0 06 48 01 d0 <48> 8b 10 80 e6 80 0f 85 be 00 00 00 49 89 c2 49 8b 02 a8 80 0f 
  [   31.780000] RIP  [<ffffffff811a2046>] kfree+0x56/0x140
  [   31.780000]  RSP <ffff8802216dba68>
  [   31.780000] CR2: ffffec2000000900

  Kernel is:

  3.13.0-43-generic

  This looks similar to #1397553, except applies to Trusty.

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