Per Matt's request in comment #34 I have attached the before and after outputs from intel_reg_dumper.
The process I followed: Boot system to login prompt ctrl+alt+1 to prompt, login, execute 'sudo intel_reg_dumper > intel-regs-before.txt' and exit ctrl+alt+7 to login prompt login, laptop screen goes black, monitor begins flashing colors. Login sound is played. ctrl+alt+1 to prompt, login, execute 'sudo intel_reg_dumper > intel-regs-after.txt' reboot Please advise if there are any additional diagnostic steps I can run. Thanks. ** Attachment added: "Before" https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/747205/+attachment/2027193/+files/intel-regs-before.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/747205 Title: [arrandale] Black screen on all outputs when external VGA is connected _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
