$ glxinfo ... direct rendering: Yes ... when using the automatically detected xorg.conf of clean install. I guess the video mode then is "[EMAIL PROTECTED]" and there is no higher resolution available in display settings of Xubuntu even though the hardware would be capable of higher resolution. I don't see the flickering in the main screen now. On the other hand, the second screen looks even more horrifying with this setting. (I used displayconfig-gtk first to get draft for doing the xorg.conf given in the first comment.)
** Attachment added: "xorg.conf" http://launchpadlibrarian.net/13930600/xorg.conf -- [Hardy] No direct rendering by MGA G400/G450 (rev 82) https://bugs.launchpad.net/bugs/219515 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs