Red Hat Bugzilla – Bug 476747
lack of error recovery for gdm/X-server failure
Last modified: 2009-12-18 02:18:45 EST
Description of problem:
When the X server fails to start, the graphical boot splash screen ("solar") remains in place and the console is unusable.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. echo lose > /etc/X11/xorg.conf
3. wait for the stars to stop twinkling
Frozen console, cannot get anything from typing, can't switch VTs.
Switch to text mode, show some error messages.
I'm not really sure which components are at fault here. The lack of error recovery is a serious problem--the boot sequence should become usable somehow in many different cases of components failing.
Here the X server refused to start up because of a bad xorg.conf file.
That is fine for its part, but gdm should be more graceful about it.
I can't even figure out how to make gdm restart (without rebooting) after fixing the problem via ssh login.
Even if gdm fails ungracefully, the boot sequence should do something that a console user can recover from. Switching to text mode and making VT switching hot keys work seems like the minimum. Booting the same system with "rhgb quiet" remove from the kernel command line at least gets you that.
Right now we put the console into KD_GRAPHICS mode to prevent text from showing up. Soon we'll be switching over to using libdrm for plymouth. As part of that changeover plymouth will own it's framebuffer object instead of using the kernel one (which fbcon also uses).
This problem should go away then.
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