Public bug reported:
I don't know which package causes this, maybe usplash, upstart or
whatever. Since some days, uplash is shown correctly (colorfull) on
AMD64. However gdm does not start: after usplash is shown, and progress
bar reaches the right position, screen turns into black and nothing
happens (my monitor reports resolution of 720x400). I can't change
terminals with ALT-Fx keys. However, if I trigger SAK (alt-sysreq-K) gdm
starts and everything works, though on system shutdown, system drops me
a shell instead of power off (is it caused by SAK?). So I think there is
someting which hangs on boot but I don't know what, because there is no
picture on screen.
According to dmesg:
[ 95.771841] SysRq : SAK
[ 95.771991] SAK: killed process 1 (init): fd#0 opened to the tty
[ 95.772004] SAK: killed process 2554 (logd): fd#0 opened to the tty
[ 95.772031] SAK: killed process 5235 (gdm): fd#6 opened to the tty
[ 97.105693] **WARNING** I2C adapter driver [NVIDIA i2c adapter 0 at 1:00.0]
forgot to specify physical device; fix it!
[ 97.107899] **WARNING** I2C adapter driver [NVIDIA i2c adapter 1 at 1:00.0]
forgot to specify physical device; fix it!
[ 97.109976] **WARNING** I2C adapter driver [NVIDIA i2c adapter 2 at 1:00.0]
forgot to specify physical device; fix it!
** Affects: Ubuntu
Importance: Undecided
Status: Unconfirmed
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gdm does not start after boot (and usplash): black screen
https://launchpad.net/bugs/84355
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