ubuntu-x-swat team mailing list archive

[Bryce Harrington <814895@xxxxxxxxxxxxxxxxxx>]

So, looks like it's trying to boot up on crtc #3, but presumably only 1
and 2 are attached.  That happens well before X.org loads, so it looks
to be a bug in kernel drm.

Please turn on kernel graphics debugging - run 'sudo xdiagnose', it's
the first checkbox.  Check it, click apply, reboot, and reproduce the
problem, then collect 'sudo dmesg > dmesg.txt' and attach that here.
That will help identify why the kernel is getting so confused by CRTC
#3.

There's been a significant amount of kernel work upstream to resolve
problems like this in sandy bridge and ivy bridge, and presumably if you
boot the 3.2 kernel the issue would be resolved.  If you'd like to test
this theory but you don't want to install Ubuntu Precise, it should be
sufficient to boot a Live USB session, configure the monitors, and see
if it is working properly now.    You can get the current Live USB
desktop image at http://cdimage.ubuntu.com/daily-live/current/ and
create a USB boot drive using usb-creator.


** Changed in: xserver-xorg-video-intel (Ubuntu)
       Status: Confirmed => Incomplete

** Summary changed:

- [snb-m-gt2] Ubuntu won't load with external monitor connected on ASUS N73SV laptop. Dual monitor bug.  *ERROR* Couldn't find PLL settings for mode!
+ [snb-m-gt2] Booting with external monitor fails with *ERROR* Couldn't find PLL settings for mode!

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https://bugs.launchpad.net/bugs/814895

Title:
  [snb-m-gt2] Booting with external monitor fails with *ERROR* Couldn't
  find PLL settings for mode!

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