Apr 18 20:19:06 Matth kernel: [   39.628269] hda-intel 0000:01:00.1: Disabling via VGA-switcheroo
Apr 18 20:19:06 Matth kernel: [   39.642841] radeon: switched off
Apr 18 20:19:07 Matth kernel: [   40.918960] BUG: unable to handle kernel NULL pointer dereference at           (null)
Apr 18 20:19:07 Matth kernel: [   40.919038] IP: [<ffffffffa01b6c05>] r600_pcie_gart_tlb_flush+0xf5/0x110 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.919137] PGD 0 
Apr 18 20:19:07 Matth kernel: [   40.919157] Oops: 0000 [#1] SMP 
Apr 18 20:19:07 Matth kernel: [   40.919190] Modules linked in: dm_crypt(F) bnep parport_pc(F) rfcomm ppdev(F) bluetooth binfmt_misc(F) nls_iso8859_1(F) uvcvideo snd_hda_codec_hdmi snd_hda_codec_realtek arc4(F) kvm_intel videobuf2_vmalloc videobuf2_memops kvm snd_hda_intel videobuf2_core snd_hda_codec videodev rtl8192se joydev(F) snd_hwdep(F) snd_pcm(F) rtlwifi mac80211 snd_page_alloc(F) snd_seq_midi(F) snd_seq_midi_event(F) snd_rawmidi(F) cfg80211 snd_seq(F) microcode(F) snd_seq_device(F) snd_timer(F) psmouse(F) snd(F) soundcore(F) serio_raw(F) lpc_ich mei intel_ips mac_hid coretemp lp(F) parport(F) wmi radeon i915 ahci(F) libahci(F) ttm video(F) i2c_algo_bit drm_kms_helper atl1c drm
Apr 18 20:19:07 Matth kernel: [   40.919772] CPU 0 
Apr 18 20:19:07 Matth kernel: [   40.919793] Pid: 1296, comm: Xorg Tainted: GF            3.8.0-18-generic #28-Ubuntu Medion P662X/H36QM
Apr 18 20:19:07 Matth kernel: [   40.919873] RIP: 0010:[<ffffffffa01b6c05>]  [<ffffffffa01b6c05>] r600_pcie_gart_tlb_flush+0xf5/0x110 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.919982] RSP: 0018:ffff88011e631a18  EFLAGS: 00010282
Apr 18 20:19:07 Matth kernel: [   40.920027] RAX: ffffc900047a2f34 RBX: 0000000000000000 RCX: 0000000000000000
Apr 18 20:19:07 Matth kernel: [   40.920087] RDX: 0000000000000000 RSI: 0000000000002f34 RDI: ffff880121af4000
Apr 18 20:19:07 Matth kernel: [   40.920146] RBP: ffff88011e631a28 R08: ffff88011cf07180 R09: 0000000000000004
Apr 18 20:19:07 Matth kernel: [   40.920205] R10: ffffea000473c1c0 R11: ffffffffa0089620 R12: ffff880121af4000
Apr 18 20:19:07 Matth kernel: [   40.920265] R13: ffff88011cf07180 R14: ffff88011cf071a0 R15: 0000000000000221
Apr 18 20:19:07 Matth kernel: [   40.920324] FS:  00007f3f61241940(0000) GS:ffff880127c00000(0000) knlGS:0000000000000000
Apr 18 20:19:07 Matth kernel: [   40.920392] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Apr 18 20:19:07 Matth kernel: [   40.920440] CR2: 0000000000000000 CR3: 000000011ecff000 CR4: 00000000000007f0
Apr 18 20:19:07 Matth kernel: [   40.920499] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Apr 18 20:19:07 Matth kernel: [   40.920558] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Apr 18 20:19:07 Matth kernel: [   40.920619] Process Xorg (pid: 1296, threadinfo ffff88011e630000, task ffff88011bd2dd00)
Apr 18 20:19:07 Matth kernel: [   40.920685] Stack:
Apr 18 20:19:07 Matth kernel: [   40.920704]  0000000000000004 ffff880121af4000 ffff88011e631a70 ffffffffa018b6de
Apr 18 20:19:07 Matth kernel: [   40.920770]  0000000000000004 000002211e631b68 ffff88011f4ec080 ffff880121af4640
Apr 18 20:19:07 Matth kernel: [   40.920836]  ffff880121af4598 ffff88011e631b68 ffff88011b4b2848 ffff88011e631a90
Apr 18 20:19:07 Matth kernel: [   40.920902] Call Trace:
Apr 18 20:19:07 Matth kernel: [   40.920949]  [<ffffffffa018b6de>] radeon_gart_bind+0xbe/0xf0 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.921025]  [<ffffffffa0188bf7>] radeon_ttm_backend_bind+0x37/0xa0 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.921094]  [<ffffffffa007fd7f>] ttm_tt_bind+0x4f/0x70 [ttm]
Apr 18 20:19:07 Matth kernel: [   40.921150]  [<ffffffffa00821cf>] ttm_bo_handle_move_mem+0x56f/0x600 [ttm]
Apr 18 20:19:07 Matth kernel: [   40.921216]  [<ffffffffa0082db0>] ? ttm_bo_mem_space+0x180/0x360 [ttm]
Apr 18 20:19:07 Matth kernel: [   40.921277]  [<ffffffff8117ce21>] ? kmem_cache_alloc+0x31/0x130
Apr 18 20:19:07 Matth kernel: [   40.923676]  [<ffffffffa00830c7>] ttm_bo_move_buffer+0x137/0x150 [ttm]
Apr 18 20:19:07 Matth kernel: [   40.926093]  [<ffffffffa008317a>] ttm_bo_validate+0x9a/0x110 [ttm]
Apr 18 20:19:07 Matth kernel: [   40.928517]  [<ffffffffa00834ee>] ttm_bo_init+0x2fe/0x3c0 [ttm]
Apr 18 20:19:07 Matth kernel: [   40.931347]  [<ffffffffa018a34c>] radeon_bo_create+0x18c/0x210 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.934551]  [<ffffffffa018a000>] ? radeon_bo_clear_va+0x60/0x60 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.937151]  [<ffffffffa019cdb6>] radeon_gem_object_create+0xa6/0x170 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.939651]  [<ffffffffa019d1fb>] radeon_gem_create_ioctl+0x6b/0x120 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.942134]  [<ffffffffa0004559>] drm_ioctl+0x4e9/0x5b0 [drm]
Apr 18 20:19:07 Matth kernel: [   40.944620]  [<ffffffffa019d190>] ? radeon_gem_pwrite_ioctl+0x30/0x30 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.947117]  [<ffffffff816ceefc>] ? __do_page_fault+0x25c/0x4e0
Apr 18 20:19:07 Matth kernel: [   40.949646]  [<ffffffff811a58f9>] do_vfs_ioctl+0x99/0x570
Apr 18 20:19:07 Matth kernel: [   40.952194]  [<ffffffff811a5e61>] sys_ioctl+0x91/0xb0
Apr 18 20:19:07 Matth kernel: [   40.954756]  [<ffffffff816cf18e>] ? do_page_fault+0xe/0x10
Apr 18 20:19:07 Matth kernel: [   40.957336]  [<ffffffff816d379d>] system_call_fastpath+0x1a/0x1f
Apr 18 20:19:07 Matth kernel: [   40.959870] Code: 00 c1 e8 04 83 f8 02 74 29 85 c0 74 c9 5b 41 5c 5d c3 0f 1f 40 00 31 c9 31 d2 be 34 2f 00 00 48 8b 9f 90 03 00 00 e8 5b f1 fe ff <8b> 03 e9 42 ff ff ff 48 c7 c7 58 f2 20 a0 31 c0 e8 12 7e 50 e1 
Apr 18 20:19:07 Matth kernel: [   40.965547] RIP  [<ffffffffa01b6c05>] r600_pcie_gart_tlb_flush+0xf5/0x110 [radeon]
Apr 18 20:19:07 Matth kernel: [   40.968432]  RSP <ffff88011e631a18>
Apr 18 20:19:07 Matth kernel: [   40.971196] CR2: 0000000000000000
Apr 18 20:19:07 Matth kernel: [   40.985645] ---[ end trace 91a08070bc1ab115 ]---