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LCD is blank when booting with an external analog (VGA) monitor connected - ThinkPad

Symptom

The boot display and BIOS Setup screens are blank when booted with an external analog(VGA) monitor connected

Affected configurations

Any of the following systems maybe affected by this symptom:

  • ThinkPad G41 with Intel Graphics, ThinkPad G50
  • ThinkPad X40, X41, X41 Tablet
  • ThinkPad T40 with an SXGA+ panel, T40p, T41 with an SXGA+ panel, T42 with an SXGA+ panel, T43 with Intel Graphics
  • ThinkPad R50e, R51 with Intel Graphics, R52 with Intel Graphics
  • ThinkPad R60 with Intel Graphics, R60e, R61 with Intel Graphics, R61e, R61i with Intel Graphics
  • ThinkPad T60 with Intel Graphics and an XGA panel, T61, T61p
  • \ThinkPad X60, X60s, X60 Tablet, X61, X61s, X61 Tablet
  • ThinkPad Z60m with Intel Graphics, Z60t, Z61e, Z61m with Intel Graphics , Z61t
Solution

Select ThinkPad LCD as Boot Display Device in BIOS Setup in order to activate ThinkPad LCD. The affected systems do not support simultaneous displays.


  • Alias ID: MIGR-73009
  • Document ID: HT004056
  • Last Updated :17-6-2014
  • (c) 2014 Lenovo