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[Launchpad Bug Tracker <814895@xxxxxxxxxxxxxxxxxx>]

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Ubuntu 11.04 Natty
 2.6.38-10.46-generic 2.6.38.7

Ubuntu hangs after grub when an external monitor connected to ASUS N73SV via HDMI or VGA.
The syslog contains following lines:

Jul 21 13:07:34 ubuntu kernel: [   10.042002] [drm:intel_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
Jul 21 13:07:34 ubuntu kernel: [   10.042005] [drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on [CRTC:3]
Jul 21 13:07:34 ubuntu kernel: [   10.047336] [drm:intel_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
Jul 21 13:07:34 ubuntu kernel: [   10.047340] [drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on [CRTC:3]
Jul 21 13:07:34 ubuntu kernel: [   10.047343] [drm:drm_fb_helper_restore] *ERROR* Failed to restore crtc configuration
Jul 21 13:07:34 ubuntu kernel: [   10.068582] [drm:intel_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
Jul 21 13:07:34 ubuntu kernel: [   10.068585] [drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on [CRTC:3]
Jul 21 13:07:34 ubuntu kernel: [   10.068771] [drm:intel_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
Jul 21 13:07:34 ubuntu kernel: [   10.068772] [drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on [CRTC:3]
Jul 21 13:07:34 ubuntu kernel: [   10.068774] detected fb_set_par error, error code: -22
Jul 21 13:07:34 ubuntu kernel: [   10.068811] [drm:intel_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
Jul 21 13:07:34 ubuntu kernel: [   10.068812] [drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on [CRTC:3]
Jul 21 13:07:34 ubuntu kernel: [   10.072990] [drm:intel_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
Jul 21 13:07:34 ubuntu kernel: [   10.072992] [drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on [CRTC:3]
Jul 21 13:07:34 ubuntu kernel: [   10.082137] [drm:intel_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
Jul 21 13:07:34 ubuntu kernel: [   10.084215] [drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on [CRTC:3]
Jul 21 13:07:34 ubuntu kernel: [   10.086281] [drm:drm_fb_helper_restore] *ERROR* Failed to restore crtc configuration

With the HDMI/VGA disconnected Ubuntu starts fine. After Ubuntu completely loaded the external display can be 
connected without problems. At this time it is detected properly and works perfect. The desktop is shared fine to it.
i.e each time I turn it on I have to disconnect external display, wait until Ubuntu login screen displayed, then connect
the external display again.

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: Incomplete

-- 
Ubuntu won't load with external monitor connected on ASUS N73SV laptop
https://bugs.launchpad.net/bugs/814895
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