** Description changed: Following an upgrade to Ubuntu 7.10, my Dell Inspiron 1520 laptop is no longer capable of using only the external monitor, a Dell SE198WFP widescreen LCD connected by VGA to a NVIDIA GeForce 8400M GS. It worked well in 7.04 and even adapted the resolution to suit the active monitor, albeit with unofficial packages of xserver-1.3 and the NVIDIA proprietary driver. The following behaviour is observed: The key combination for switching between outputs no longer works: display redrawing pauses briefly, but the external monitor doesn't do anything and the internal panel doesn't go blank. This happens whether or not the monitor's connected at startup. If the monitor's connected at startup, then the BIOS boot messages and usplash (at shutdown, too) display on the external monitor: however, when X is started, it reverts back to using the internal panel. Virtual terminals display on the external monitor, but the text is visibly distorted and waves left and right. If the external monitor isn't connected at startup, the VTs display properly on the internal panel as expected. The monitors can be set up with displayconfig-gtk to work in a dual head configuration, and this works well, but there seems to be no way to only - use one or the other. Marking the internal panel as "Disabled" and + use the external monitor. Marking the internal panel as "Disabled" and instructing it to use the external monitor as the default screen doesn't work at all: the internal panel tries to start using the resolution of the external panel, fails several times, and ends up in a corrupted version of the X failsafe environment, with garbage displayed at the top and right hand sides of the screen and the rest of the display truncated to fit. This worked well with an earlier version of the X server (1.3.0.0 from upstream) and of the NVIDIA drivers (100.14.11), so this could be a misconfiguration issue caused by the upgrade, but I've tried changing every relevant property I can find in xorg.conf with no luck. Any advice you may have would be appreciated!
-- External monitor doesn't work as expected after Gutsy upgrade https://bugs.launchpad.net/bugs/158503 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
