BUG: unable to handle kernel NULL pointer dereference at 000001e4 IP: [] intel_tv_detect_type.clone.6+0xa7/0x4a0 [i915] *pde = 7f07d067 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/virtual/video4linux/video0/uevent Modules linked in: webcamstudio videodev cryptd aes_i586 aes_generic binfmt_misc sco bnep l2cap kvm_intel kvm parport_pc ppdev dm_crypt snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event iwlcore snd_seq snd_timer snd_seq_device btusb joydev snd soundcore bluetooth mac80211 cfg80211 snd_page_alloc dell_laptop dell_wmi psmouse serio_raw dcdbas sparse_keymap lp parport i915 tg3 drm_kms_helper drm i2c_algo_bit video Pid: 1467, comm: upowerd Not tainted 2.6.38-7-generic #39-Ubuntu Dell Inc. Latitude D820 /0GF470 EIP: 0060:[] EFLAGS: 00010206 CPU: 1 EIP is at intel_tv_detect_type.clone.6+0xa7/0x4a0 [i915] EAX: 00000000 EBX: f350ac00 ECX: f350a800 EDX: f350a820 ESI: f82a4a6c EDI: 0f0000aa EBP: f6297e08 ESP: f6297dc8 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process upowerd (pid: 1467, ti=f6296000 task=f629cbc0 task.ti=f6296000) Stack: f6297e08 f827d87a 00000000 00000000 00000380 f6297e20 f350a820 f350aea4 70000000 000c0000 000c0007 f350a800 f3d20000 f350ac00 f82a4a6c f6297ef0 f6297f00 f8293795 f6297e20 00000001 012fc660 f350a800 00000003 00000000 Call Trace: [] ? intel_get_load_detect_pipe+0x14a/0x190 [i915] [] intel_tv_detect+0x195/0x1d0 [i915] [] ? status_show+0x0/0x50 [drm] [] status_show+0x1f/0x50 [drm] [] dev_attr_show+0x29/0x50 [] sysfs_read_file+0x7e/0x130 [] vfs_read+0x9f/0x160 [] ? sysfs_read_file+0x0/0x130 [] sys_read+0x42/0x70 [] syscall_call+0x7/0xb Code: 8b 41 10 89 90 00 80 06 00 3e 8d 74 26 00 8b 4d f0 8b 41 10 89 b8 04 80 06 00 8b 41 10 8b 80 04 80 06 00 8b 55 d8 8b 4d ec 8b 02 <8b> 90 e4 01 00 00 8b 01 e8 0c 88 fe ff b8 14 00 00 00 e8 c2 17 EIP: [] intel_tv_detect_type.clone.6+0xa7/0x4a0 [i915] SS:ESP 0068:f6297dc8 CR2: 00000000000001e4 ---[ end trace f8acc36848b64391 ]---