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trashhalo
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Joined: 12 Apr 2005
Posts: 16
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 Posted: Sun Mar 30, 2008 6:45 pm Post subject: [Solved] No messages displayed during boot process |
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I have been running gentoo for a 5 years now. So I know that this issue I am suffering is completely my fault. I am just looking for some suggestions on where to look. I was running on autopilot this morning changed some settings along with a kernel recompile and reboot. Every since the reboot not a single messages is displayed during the boot process (minus uncompressing and loading kernel.) Even after the boot process the same screen is displayed. So, no login prompt.
I know that the boot process finishes successfully because I am able to login to the machine and execute commands (all blindly of course). I know that they execute because I can run things that play sound. Also I am able to ssh into the machine. Also I cannot change virtual terminals. I am stuck looking at that last message from the kernel.
First thought was something wrong was my inittab configuration or agetty was dieing at boot. I have now verified agetty is running and that my inittab is just about identical to the inittab.old from a gentoo minimal livecd. I have tried to go back to my old kernel configuration but with so many builds I have lost that magical working kernel config from 8am this morning.
Comparing dmesg logs from previous days and today reveals that dmesg used to log that the Console was vga+ enabled now it just states that the console is a colour dummy device (states that yesterday but then switches to vga+) then enables tty0 as console. I have also attempted to add console=tty0 and console=tty1 on the kernel line of my grub.conf. Neither of which changed anything.
No errors. Warnings in the logs. Whats complicating matters also is X is freezing upon start too. But that I can figure out on my own after I figure out why I have no console output.
Any help would be greatly appreciated as I have wasted my entire sunday 
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Last edited by trashhalo on Sun Mar 30, 2008 8:40 pm; edited 1 time in total |
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trashhalo
n00b
Joined: 12 Apr 2005
Posts: 16
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| Posted: Sun Mar 30, 2008 7:55 pm Post subject: |
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I am starting to think that its related to the lack of vga+ console binding messages. After reading http://www.mjmwired.net/kernel/Documentation/console/ I sshed into the box and ran a couple commands:
| Code: | gentoo vtconsole # pwd
/sys/class/vtconsole
gentoo vtconsole # ls
vtcon0
gentoo vtconsole # cd vtcon0
gentoo vtcon0 # ls
bind name power subsystem uevent
gentoo vtcon0 # cat name
(S) dummy device
gentoo vtcon0 # |
Any future discoveries will be attached to this reply.
That was it! Though I am not 100% sure which setting fixed it. Here is a diff between the two configs.
Left: New working config
Right: Old broken config
| Code: | # Sun Mar 30 16:02:01 2008 | # Sun Mar 30 08:17:36 2008
> # CONFIG_ACPI_VIDEO is not set
CONFIG_LEGACY_PTYS=y | # CONFIG_LEGACY_PTYS is not set
CONFIG_LEGACY_PTY_COUNT=256 <
# CONFIG_VGASTATE is not set | CONFIG_VGASTATE=y
# CONFIG_VIDEO_OUTPUT_CONTROL is not set | CONFIG_VIDEO_OUTPUT_CONTROL=m
CONFIG_FB_TILEBLITTING=y | # CONFIG_FB_TILEBLITTING is not set
# CONFIG_FB_VGA16 is not set | CONFIG_FB_VGA16=y
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set | CONFIG_BACKLIGHT_LCD_SUPPORT=y
> CONFIG_LCD_CLASS_DEVICE=m
# CONFIG_FRAMEBUFFER_CONSOLE is not set | CONFIG_FRAMEBUFFER_CONSOLE=y
> CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
> # CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
> CONFIG_FB_CON_DECOR=y
> # CONFIG_FONTS is not set
> CONFIG_FONT_8x8=y
# CONFIG_LOGO is not set | CONFIG_LOGO=y
> CONFIG_LOGO_LINUX_MONO=y
> CONFIG_LOGO_LINUX_VGA16=y
> CONFIG_LOGO_LINUX_CLUT224=y |
And as I suspected the difference between no output and all output and vts working was in the vga+ line. Check out the last couple boots:
| Code: | root:log[0]% egrep -i console messages
Mar 30 13:12:26 gentoo Console: colour dummy device 80x25
Mar 30 13:12:26 gentoo console [tty0] enabled
Mar 30 15:49:23 gentoo Console: colour dummy device 80x25
Mar 30 15:49:23 gentoo console [tty0] enabled
Mar 30 16:25:12 gentoo Console: colour VGA+ 80x25
Mar 30 16:25:12 gentoo console [tty0] enabled |
Notice that the last boot (that actually worked) has the VGA+ line.
Hopefully someone else who makes the same mistake will find my topic helpful.
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