On Wed, April 13, 2011 12:00 pm, m.roth@5-cent.us wrote:
Message: 30 Date: Tue, 12 Apr 2011 15:10:52 -0400 From: m.roth@5-cent.us Subject: Re: [CentOS] Got no login screen with the new 5.6 kernel
Phil Schaffner wrote:
Stanley A. Klein wrote on 04/12/2011 01:55 PM:
I did the 5.6 update yesterday. When I started the machine today, I did not get a login screen -- it was just a blank screen with no cursor or anything. I shut down, restarted and when grub came up selected the previous kernel. The system came up as usual, presented a login screen, and is working OK.
There is apparently something buggy related to the new kernel (2.6.18-238.5.1.el5).
How far did it get during the boot - to where the GUI login should have been displayed, or did it die earlier? Anything enlightening in /var/log/messages or /var/log/Xorg.0.log? Did you try a boot to runlevel 3 or 1 to debug?
My reaction, also: on boot, edit the kernel line to either runlevel 3, or s (single user mode), and I'll wager you see the screen. If so, then your problem is the video driver used by X. HOPEFULLY, there's system-config-display, otherwise, you screw with /etc/X11/xorg.conf and startx until you get something, then you can use the GUI tools.
mark
Problem solved, but rather strange.
When I first booted with the previous kernel I looked at /var/log/messages and didn't see anything useful. Today, I selected the previous kernel from the grub screen and looked at /var/log/Xorg.0.log. The date in the file was today, so that was from the current boot, not from the time it failed to give the login screen.
I edited inittab to default to runlevel 3. I got the runlevel 3 login prompt, did startx, and the GUI came up. I restored the runlevel 5 default in inittab and rebooted letting the new kernel get selected by default. The login screen came up.
It must have had something to do with the initialization of X on the first boot under 5.6.
Your suggestions helped.
Thanks.
Stan Klein
On Wed, 2011-04-13 at 19:14 -0400, Stanley A. Klein wrote:
On Wed, April 13, 2011 12:00 pm, m.roth@5-cent.us wrote:
Phil Schaffner wrote:
Stanley A. Klein wrote on 04/12/2011 01:55 PM:
I did the 5.6 update yesterday. When I started the machine today, I did not get a login screen -- it was just a blank screen with no cursor or anything. I shut down, restarted and when grub came up selected the previous kernel. The system came up as usual, presented a login screen, and is working OK.
There is apparently something buggy related to the new kernel (2.6.18-238.5.1.el5).
Problem solved, but rather strange.
When I first booted with the previous kernel I looked at /var/log/messages and didn't see anything useful. Today, I selected the previous kernel from the grub screen and looked at /var/log/Xorg.0.log. The date in the file was today, so that was from the current boot, not from the time it failed to give the login screen.
I edited inittab to default to runlevel 3. I got the runlevel 3 login prompt, did startx, and the GUI came up. I restored the runlevel 5 default in inittab and rebooted letting the new kernel get selected by default. The login screen came up.
It must have had something to do with the initialization of X on the first boot under 5.6.
Your suggestions helped.
Thanks.
I had a grainy display and strange colors after my update. I ended up reinstalling the xorg drivers, selecting an incorrect video card, which caused X to probe the hardware and build a good config. Something definitely bizarre about the 5.6 upgrade and X.
Dave M
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David McGuffey -
Stanley A. Klein