A couple new facts: This time, when I started the machine with external monitor plugged in, the machine was unable to go beyond the mirrored screen setting. Any change resulted in a black screen with, apparently, the last column of what should be displayed in the built-in the LCD displayed as the first column of the built-in LCD. Mouse movement was OK and I was able to click on the indicator-session-applet and open the menu, but could not successfully click on the menu itself in order to restart X. Ctrl-Alt- Backspace didn't work either.
I am attaching the lspci, dmesg and Xorg.0.log ** Attachment added: "lspci output" http://launchpadlibrarian.net/33496595/lspci-vvnn.txt -- Plugging a second monitor hard-crashes (locks-up) the computer https://bugs.launchpad.net/bugs/447174 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-sis in ubuntu. _______________________________________________ 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