Created attachment 505893 [details] dmesg Description of problem: Booting a Thinkpad T520 with Kernel Mode Setting (KMS) enabled connected to a docking station with an external monitor results in X not starting and the intel driver reporting "failed to set mode: invalid argument". Booting with KMS enabled with the laptop display or an external monitor connected directly to the laptop results in X starting. Booting the same setup (Thinkpad T520 connected to a docking station with external monitor) boots correctly although uses the vesa driver. Booting the Network Install CD with the laptop connected to the docking station results in a black screen when the graphical installer attempts to load. Version-Release number of selected component (if applicable): xorg-x11-drv-intel-2.15.0-3.fc15.x86_64 How reproducible: 100% Steps to Reproduce: 1. Install F15 when laptop is not connected to docking station 2. Connect the laptop to the docking station 3. Boot Actual results: X won't start Expected results: X will start Additional info:
Created attachment 505895 [details] Intel ROM
Created attachment 505896 [details] messages
Created attachment 505897 [details] Xorg log
T520 specs: SandyBridge HD3000 Intel Core i7-2620M
Correction: Booting the same setup without KMS (Thinkpad T520 connected to a docking station with external monitor) boots correctly although uses the vesa driver.
I partially confirm this bug: on my MacBook Air 2011 11" I can start X only using 'nomodeset' option in grub2 and X starts with vesa driver. I can use 'fbdev' too, but with very strange results. Any attempt to use intel drivers, fails miserably...
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