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[Bug 685727] Re: When i upgraded to 10.10 the screen on my laptop(Gateway nv79) went completely black and I could not see anything unless I held a flashlight to the screen to see. The only way I am able to fix this is issue is by doing a system test. But as soon as my laptop goes to sleep it goes back to the black screen. I could not find another fix because once I did the system testing for 10.10 it would not allow me to do the testing again to fix it.

 

here's some further information from kern.log .. I believe that the
message appearing just before back light is turned off, is starred
below:


Jan 16 20:10:02 uziwa kernel: [   18.059419] intel ips 0000:00:1f.6: Warning: CPU TDP doesn't match expected value (found 25, expected 35)
Jan 16 20:10:02 uziwa kernel: [   18.059446]   alloc irq_desc for 21 on node -1
Jan 16 20:10:02 uziwa kernel: [   18.059450]   alloc kstat_irqs on node -1
Jan 16 20:10:02 uziwa kernel: [   18.059460] intel ips 0000:00:1f.6: PCI INT A -> GSI 21 (level, low) -> IRQ 21

*** Jan 16 20:10:02 uziwa kernel: [   18.059669] intel ips 0000:00:1f.6:
failed to get i915 symbols, graphics turbo disabled

Jan 16 20:10:02 uziwa kernel: [   18.062036] intel ips 0000:00:1f.6: IPS
driver initialized, MCP temp limit 65535

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https://bugs.launchpad.net/bugs/685727

Title:
  When i upgraded to 10.10 the screen on my laptop(Gateway nv79) went
  completely black and I could not see anything unless I held a
  flashlight to the screen to see. The only way I am able to fix this is
  issue is by doing a system test. But as soon as my laptop goes to
  sleep it goes back to the black screen. I could not find another fix
  because once I did the system testing for 10.10 it would not allow me
  to do the testing again to fix it.



References