Selected xorg as the relevant package since the dimming of the screen occurs just before the login screen.
** Package changed: ubuntu => xorg (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1172593 Title: [Dual monitor] One monitor very dim after 13.04 upgrade Status in “xorg” package in Ubuntu: New Bug description: Hi all, After upgrading from 12.10 to 13.04 on a system with two monitors, the second one became very dim. In fact, it's so dim that I thought it was blank. Both monitors are fine when booting up and they both show the "Ubuntu" name with 5 circles underneath...but somewhere during this point, the second screen blanks. By the time the login screen is shown, the second monitor is already very dim. Thinking that this might be caused by incompatible configuration files, I created a new account and logged in with that -- no difference. Thinking that maybe it's a hardware problem with the monitor, I swapped the DVI cables and the same monitor remained dim. I then plugged the monitor into another system and the monitor's fine. The second screen is fine sometimes (i.e., not always) right after the screen saver activates. I enter my password to unlock the screen saver and things are ok for a few seconds and then the second monitor suddenly dims. This is the output from lspci: $ lspci -v | grep -i vga 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Cedar [Radeon HD 5000/6000/7350 Series] (prog-if 00 [VGA controller]) I'm not sure what steps are required to reproduce this bug since it always happens to me... I'd be happy to provide more information if I have an idea what information might be relevant. Ray To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1172593/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
