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After installation, booting crashes to green screen
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jowthecowboy
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Joined: 02 Apr 2016
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PostPosted: Sat Apr 02, 2016 8:48 pm    Post subject: After installation, booting crashes to green screen Reply with quote

I have never gotten a fresh Gentoo install to work. After a fresh installation, booting results in a crash to a green screen, as in the background is green instead of black and the computer becomes unresponsive. It only seems like it is normally booting for a few seconds and then the crash. Other Linux distrobutions work fine.. I followed the Gentoo handbook to tbe best of my abilities, and unless something messed up somewhere, I am not using very obscure hardware. If it matters, I used
Code:
genkernel all
to compile the kernel. How can I fix this Gentoo install?
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Maxxx
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Joined: 12 Jan 2016
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PostPosted: Sat Apr 02, 2016 9:39 pm    Post subject: Reply with quote

I suppose that something is wrong in your kernel configuration. I would try to manually configure the kernel.

Look at this post:

https://forums.gentoo.org/viewtopic-p-7847258.html?sid=0bada681038d7a4e84e0dd5ffa3ebf89

It may be similar to your problem.
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ffpp
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PostPosted: Mon Apr 04, 2016 12:10 pm    Post subject: Reply with quote

How about "evdev" in your INPUT_DEVICES in make.conf?
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snowjob
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PostPosted: Thu May 26, 2016 4:49 pm    Post subject: Reply with quote

I'm having similar issues. It's hard to know for sure what the system is trying to load when it happens as it appears to change the font size. The font change shifts the screen up a few lines. I was thinking maybe something with the framebuffer, but adding nofb at boot didn't change anything.

I had started with a custom kernel, but couldn't get the it to find the root filesystem. (Even went back to good old MBR, and had FS support built into the kernel and it still couldn't find it).

The system had a flavor of ubuntu running on it previously, so I know it's not a hardware issue. Well, at least not a non-resolvable issue.
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guitou
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PostPosted: Fri May 27, 2016 8:55 am    Post subject: Reply with quote

Hello.

You should try and reboot with live CD/DVD, re-run the mounts, and chroot, as for a classic install, then check for clues in your log files, (well, in fact to check logs you only need to mount the relevant FS, the one containing /var, but if you identify issue, you will be in place to fix): /var/log/dmesg might contain smth of interest.

++
Gi)
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Melsion
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PostPosted: Fri May 27, 2016 3:51 pm    Post subject: Reply with quote

In my experience, usually a green clocked screen means kernel panic, usually due to problems with the graphics drivers. Check if you have any framebuffer driver built into your kernel other than "VESA VGA graphics support" or "EFI-based framebuffer support" (under Device Drivers/Graphics Support/Frame Buffer Devices). Loading an nVidia framebuffer driver with either the nouveau or the propietary drivers could lead to your situation, and the same goes for amd and intel. Also, an incompatible driver could cause some dificulties, look up if your driver supports your graphics card.

As guitou says, checking your logs is the best source for information.

Snowjob, check if your kernel has compiled in (not as a module) the drivers for your filesystem, you can't load the ext4 module from your hard drive if you don't have the driver to mount it (that's where genkernel shines). Also check twice if you have put the right drive numbers in both your grub configuration and your kernel command line. And if it doesn't work check again, seriously, i've lost enough hours of my life with that to know that it allways fails there.
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Stratofall
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PostPosted: Wed Jun 01, 2016 5:39 pm    Post subject: Reply with quote

I actually had this same issue today when I went to do a fresh install of Gentoo. I fixed it by adding force=vesa and vga=771 to the linux kernel line in my grub.conf
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