Please attach relevant to bug reports rather than uploading them to some random site, and then linking them from a forum post and linking the forum thread in the bug report. It creates extra work for triagers who then have to try and find the information.
Anyway, your logs show that Xorg is crashing, which is not a GDM bug: Backtrace: 0: /usr/bin/X(xorg_backtrace+0x26) [0x4f00c6] 1: /usr/bin/X(xf86SigHandler+0x41) [0x4852c1] 2: /lib/libc.so.6 [0x7f5c640c7530] 3: /usr/bin/X [0x4b674a] 4: /usr/bin/X [0x4b6b37] 5: /usr/bin/X [0x49f17f] 6: /usr/bin/X [0x49f355] 7: /usr/bin/X(RRCrtcSet+0x162) [0x51d092] 8: /usr/bin/X(ProcRRSetScreenConfig+0x508) [0x522a88] 9: /usr/bin/X(Dispatch+0x394) [0x44e174] 10: /usr/bin/X(main+0x3b5) [0x434085] 11: /lib/libc.so.6(__libc_start_main+0xfd) [0x7f5c640b2abd] 12: /usr/bin/X [0x433509] Saw signal 11. Server aborting. ** Package changed: gdm (Ubuntu) => xorg-server (Ubuntu) -- Problem with login on fresh installed system https://bugs.launchpad.net/bugs/495971 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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