Apr 17 13:07:22 incubusss klogd: BUG: unable to handle kernel NULL pointer dereference at (null)
Apr 17 13:07:22 incubusss klogd: IP: [<ffffffffa06d1760>] i915_irq_emit+0x160/0x220 [i915]
Apr 17 13:07:22 incubusss klogd: PGD 144ce067 PUD 2a874067 PMD 0 
Apr 17 13:07:22 incubusss klogd: Oops: 0000 [#1] SMP 
Apr 17 13:07:22 incubusss klogd: last sysfs file: /sys/devices/virtual/backlight/acpi_video0/brightness
Apr 17 13:07:22 incubusss klogd: CPU 1 
Apr 17 13:07:22 incubusss klogd: Modules linked in: i915 drm i2c_algo_bit usbhid hid aes_x86_64 aes_generic af_packet ipv6 vboxnetflt vboxdrv coretemp binfmt_misc loop fuse dm_mirror dm_region_hash dm_log dm_mod cpufreq_ondemand cpufreq_conservative cpufreq_powersave acpi_cpufreq freq_table nvram snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device arc4 snd_pcm_oss ecb snd_pcm snd_timer ohci1394 snd_mixer_oss pcmcia ieee1394 snd sdhci_pci iwl3945 sdhci rng_core yenta_socket rfkill soundcore 8139cp mac80211 rsrc_nonstatic mmc_core snd_page_alloc 8139too pcmcia_core mii joydev i2c_i801 led_class i2c_core iTCO_wdt lib80211 iTCO_vendor_support cfg80211 ehci_hcd uhci_hcd pcspkr video thermal output serio_raw evdev rtc_cmos sr_mod processor button battery ac sg usbcore ata_generic ide_pci_generic ide_gd_mod ide_core pata_acpi ahci ata_piix libata sd_mod scsi_mod crc_t10dif jfs [last unloaded: i2c_algo_bit]
Apr 17 13:07:22 incubusss klogd: Pid: 13470, comm: X Not tainted 2.6.29.1-desktop-3mnb #1 89224LG
Apr 17 13:07:22 incubusss klogd: RIP: 0010:[<ffffffffa06d1760>]  [<ffffffffa06d1760>] i915_irq_emit+0x160/0x220 [i915]
Apr 17 13:07:22 incubusss klogd: RSP: 0018:ffff88002d4b5dd8  EFLAGS: 00010246
Apr 17 13:07:22 incubusss klogd: RAX: ffff88002b92b000 RBX: 00000000fffffff4 RCX: 0000000000000000
Apr 17 13:07:22 incubusss klogd: RDX: ffff8800138ebd80 RSI: ffff880027d61008 RDI: ffff88003dd43800
Apr 17 13:07:22 incubusss klogd: RBP: ffff88002d4b5e18 R08: ffff8800138eb9c0 R09: 0000000000000003
Apr 17 13:07:22 incubusss klogd: R10: 0000000000000000 R11: 0000000000003246 R12: ffff88003dd43800
Apr 17 13:07:22 incubusss klogd: R13: ffff8800138ebd80 R14: ffff880027d61008 R15: ffff880027d61008
Apr 17 13:07:22 incubusss klogd: FS:  00007fbeed3346f0(0000) GS:ffff88003f001f80(0000) knlGS:0000000000000000
Apr 17 13:07:22 incubusss kdm[13468]: X server died during startup
Apr 17 13:07:22 incubusss klogd: CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Apr 17 13:07:22 incubusss kdm[13468]: X server for display :0 cannot be started, session disabled
Apr 17 13:07:22 incubusss klogd: CR2: 0000000000000000 CR3: 00000000149ef000 CR4: 00000000000006e0
Apr 17 13:07:22 incubusss klogd: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Apr 17 13:07:22 incubusss klogd: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Apr 17 13:07:22 incubusss klogd: Process X (pid: 13470, threadinfo ffff88002d4b4000, task ffff880014570000)
Apr 17 13:07:22 incubusss klogd: Stack:
Apr 17 13:07:22 incubusss klogd:  ffff88002d4b5e18 0000000000000246 000000082d4b5e18 00000000fffffff4
Apr 17 13:07:22 incubusss klogd:  ffff88003dd43800 ffff8800138ebd80 ffff880027d61008 00000000c0086444
Apr 17 13:07:22 incubusss klogd:  ffff88002d4b5e78 ffffffffa063f852 0000000000000000 0000000000000000
Apr 17 13:07:22 incubusss klogd: Call Trace:
Apr 17 13:07:22 incubusss klogd:  [<ffffffffa063f852>] drm_ioctl+0x112/0x330 [drm]
Apr 17 13:07:22 incubusss klogd:  [<ffffffffa06d1600>] ? i915_irq_emit+0x0/0x220 [i915]
Apr 17 13:07:22 incubusss klogd:  [<ffffffff802f7b3d>] vfs_ioctl+0xad/0xc0
Apr 17 13:07:22 incubusss klogd:  [<ffffffff802f7bda>] do_vfs_ioctl+0x8a/0x5c0
Apr 17 13:07:22 incubusss klogd:  [<ffffffff8026c2c0>] ? hrtimer_wakeup+0x0/0x30
Apr 17 13:07:22 incubusss klogd:  [<ffffffff8053f48e>] ? do_nanosleep+0x7e/0xc0
Apr 17 13:07:22 incubusss klogd:  [<ffffffff802f81bd>] sys_ioctl+0xad/0xc0
Apr 17 13:07:22 incubusss klogd:  [<ffffffff8021272a>] system_call_fastpath+0x16/0x1b
Apr 17 13:07:22 incubusss klogd: Code: 85 c0 0f 85 bb 00 00 00 89 d0 48 8b 5d d8 4c 8b 65 e0 4c 8b 6d e8 4c 8b 75 f0 4c 8b 7d f8 c9 c3 0f 1f 00 4c 8b 42 78 49 8b 48 68 <8b> 01 85 c0 0f 89 ad 00 00 00 49 8b 40 70 48 39 d0 0f 84 c6 fe 
Apr 17 13:07:22 incubusss klogd: RIP  [<ffffffffa06d1760>] i915_irq_emit+0x160/0x220 [i915]
Apr 17 13:07:22 incubusss klogd:  RSP <ffff88002d4b5dd8>
Apr 17 13:07:22 incubusss klogd: CR2: 0000000000000000
Apr 17 13:07:22 incubusss klogd: ---[ end trace aff78257a45fb0f3 ]---
Apr 17 13:07:22 incubusss klogd: [drm:drm_release] *ERROR* Device busy: 1