Sorry, I added earlier the drm.debug parameter during the boot in the grub menu hitting 'e' but probably I did it a wrong way.
Now I attach the new dmesg.txt with drm.debug=0x04. I can confirm that the monitor is connected on the VGA port (there is no other possibility to connect it to the graphics card). Unfortunately, I can not provide the output of xrandr because I get the error: Can't open display (because I have no any running X I can get only a text console (see below)). If I run xrandr remotely (without setting the display) I obtain the followings: SZ: Pixels Physical Refresh 0 1024 x 768 ( 347mm x 260mm ) 60 1 160 x 120 ( 54mm x 41mm ) 60 2 320 x 240 ( 108mm x 81mm ) 60 3 640 x 480 ( 217mm x 163mm ) 60 4 800 x 600 ( 271mm x 203mm ) 60 5 1680 x 1050 ( 569mm x 356mm ) 60 *6 1670 x 971 ( 566mm x 329mm ) *60 Current rotation - normal Current reflection - none Rotations possible - normal Reflections possible - none Setting size to 6, rotation to normal Setting reflection on neither axis Some other information: If I hit esc when grub starts and I check the boot parameters with the key 'e' and 'ctrl+x' to continue the boot process I will obtain the possibility to log in on a text console which I can exploit maximally. During the boot I can see the boot messages and finally gpm (mouse in a text terminal) works as well. Logging in and trying to start gdm I get the warning along with similar warnings: GdmLocalDisplayFactory: maximum number of X display failures reached: check X server log for errors If I do not touch the computer during the boot (or hit esc to see the grub menu but continue booting with enter) I will get a black screen with a blinking cursor in the upper left corner and suddenly I can see the Ubuntu splash screen for a second and finally I get a totally black screen. (No any boot message was seen.) In this final state I can not switch to a virtual terminal by hitting Ctrl+Alt+F1 or F2 etc. I can reach the machine only by ssh (ssh-server is installed) or through a graphical application like nx-client from a remote machine. If I login by ssh and issue the command 'sudo reboot' or 'sudo poweroff' the ubuntu splash screen appears immediately and reboots or shutdowns the computer. ** Attachment added: "dmesg.txt with drm.debug" http://launchpadlibrarian.net/51106529/dmesg.txt -- [g41] Blank screen after upgrade and reboot [Ubuntu 10.10alpha1 ] https://bugs.launchpad.net/bugs/592044 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
